Sample crusher having a circumferential limiting component and a damping mechanism
A sample crusher, including a main body housing and an electric motor arranged in the main body housing. A swing mechanism is further arranged in the main body housing. The swing mechanism includes a transmission shaft, a swing disk for allowing a grinding tube to be placed thereon, and a circumferential limiting component. The transmission shaft is driven by the electric motor to rotate, an obliquely arranged bearing is sleeved on the transmission shaft, an included angle is formed between an axis of the bearing and an axis of the transmission shaft, the swing disk is mounted on the bearing, the swing disk and the bearing are concentrically arranged, and the swing disk is connected to the circumferential limiting component.
1 . A sample crusher, comprising:
a main body housing;
an electric motor arranged in the main body housing; and
a swing mechanism arranged in the main body housing,
wherein the swing mechanism comprises a transmission shaft, a swing disk for allowing a grinding tube to be placed thereon, and a circumferential limiting component, and the transmission shaft is driven by the electric motor to rotate, an obliquely arranged bearing is sleeved on the transmission shaft, an included angle is formed between an axis of the bearing and an axis of the transmission shaft, the swing disk is mounted on the bearing, the swing disk and the bearing are concentrically arranged, and the swing disk is connected to the circumferential limiting component,
wherein the circumferential limiting component comprises a mounting portion and a plurality of limiting portions, the mounting portion is integrally formed with the plurality of limiting portions, the circumferential limiting component is mounted on the electric motor by means of the mounting portion, and each of the plurality of limiting portions is connected to the swing disk,
and wherein the mounting portion is arranged in the form of a ring, each of the plurality of limiting portions is bar-shaped, and each of the plurality of limiting portions is integrally connected to an edge of the mounting portion, and is arranged along the edge of the mounting portion and extends radially toward the outside.
2 . The sample crusher according to claim 1 , further comprising a damping mechanism arranged in the main body housing, wherein the damping mechanism comprises a supporting plate, a first spring set and a second spring set; the electric motor is mounted on the supporting plate; the first spring set is located between a bottom of the supporting plate and a bottom of the main body housing and is capable of providing an upward elastic force to the supporting plate; and the second spring set is connected to the first spring set and is capable of providing a downward elastic force to the supporting plate.
3 . The sample crusher according to claim 2 , wherein the first spring set has an elastic coefficient greater than that of the second spring set, the elastic coefficient of the first spring set is 0.6-1.5 kgf/mm, and the elastic coefficient of the second spring set is 0.03-0.2 kgf/mm.
4 . The sample crusher according to claim 2 , wherein the damping mechanism further comprises a support body; the support body comprises a first connecting portion passing through the supporting plate and connected to the first spring set, and an acting portion at an end away from the first spring set; the acting portion extends beyond the supporting plate; the second spring set is sleeved on the support body; and the second spring set is connected to the acting portion at one end, and is connected to the supporting plate at the other end.
5 . The sample crusher according to claim 4 , wherein a connecting plate is arranged at the end of the first spring set close to the supporting plate, a second connecting portion is arranged in the middle of the connecting plate and is internally provided with an internal thread, the first connecting portion of the support body is provided with an external thread adapted to the second connecting portion, and the support body is threadedly connected to the connecting plate.
6 . The sample crusher according to claim 1 , wherein each of the plurality of limiting portions has an end connected to the swing disk, and the end has a width greater than that of a portion of the limiting portion extending along the edge of the mounting portion.
7 . The sample crusher according to claim 1 , wherein each of the plurality of limiting portions has an end connected to the swing disk, a first connecting lug and a second connecting lug are arranged on the end, and the first connecting lug and the second connecting lug respectively extend toward two sides of the limiting portion.
8 . The sample crusher according to claim 7 , wherein a first connecting hole is formed in the mounting portion, a second connecting hole is formed in the first connecting lug, the first connecting hole is arranged flush with the second connecting hole in an extending direction of the limiting portion, a distance between the first connecting hole and the second connecting hole is in a range of 65-85 mm, and an included angle of 5° to 9° is formed between the axis of the bearing and the axis of the transmission shaft.
9 . The sample crusher according to claim 7 , wherein a first connecting hole is formed in the mounting portion, a second connecting hole is formed in the first connecting lug, the first connecting hole is arranged flush with the second connecting hole in an extending direction of the limiting portion, a distance between the first connecting hole and the second connecting hole is in a range of 80-105 mm, and an included angle of 16° to 25° is formed between the axis of the bearing and the axis of the transmission shaft.
10 . The sample crusher according to claim 1 , wherein the plurality of limiting portions comprise at least a first limiting portion, a second limiting portion and a third limiting portion which are all arranged at an edge of the mounting portion.
11 . The sample crusher according to claim 10 , wherein an included angle of 115° to 120° is formed between two adjacent limiting portions.
12 . The sample crusher according to claim 1 , wherein the circumferential limiting component is made of a flexible material, the swing disk is located above the electric motor, and each of the plurality of limiting portions has an end close to the mounting portion is configured to be bent upwardly and an end connected to the swing disk configured to be bent inwardly toward a side close to the swing disk.
13 . The sample crusher according to claim 1 , further comprising a main body upper cover, wherein a lock-catch switch is arranged between the main body upper cover and the main body housing, and is connected to a control circuit of the electric motor.
14 . The sample crusher according to claim 13 , wherein the lock-catch switch comprises a lock structure and a catch structure adapted to the lock structure, the lock structure is mounted on the main body housing, the catch structure is mounted on the main body upper cover at a position corresponding to the lock structure, the lock structure is provided with a first contact point in communication with the control circuit, and the catch structure is provided with a second contact point in communication with the control circuit.
15 . The sample crusher according to claim 1 , further comprising a main body upper cover, wherein a contact switch is arranged between the main body upper cover and the main body housing, and is in communication with a control circuit of the electric motor.
16 . The sample crusher according to claim 15 , wherein the contact switch is mounted on an inner side of the main body upper cover, and a trigger block is arranged in the main body housing at a position corresponding to the contact switch, or the contact switch is mounted on an inner side of the main body housing, and a trigger block is arranged in the main body upper cover at a position corresponding to the contact switch.