Fixing device for oil cylinder of in-tank car arrester

Abstract

The utility model belongs to the technical field of coal mine transportation machinery, and discloses a tank car arrester oil cylinder fixing device which comprises a bottom plate arranged at the bottom of an oil cylinder and provided with a through groove, and further comprises a clamping assembly, the clamping assembly comprises two clamping plates and a two-way lead screw, the two-way lead screw is rotationally connected with the bottom plate, and the two clamping plates are opposite in thread screwing direction. One end penetrates through the through groove and is in threaded connection with the two-way screw rod; the limiting device is used for limiting the rotation of the two-way screw rod; one end of the bidirectional screw rod is fixedly connected with a mounting nut, and the limiting device is a first nut; mounting lugs are symmetrically arranged on the bottom plate, through holes are formed in the mounting lugs, one end of the two-way screw rod is rotationally arranged in the through hole of one mounting lug, and the other end of the two-way screw rod penetrates through the through hole of the other mounting lug and is in threaded connection with the first nut; the car arrester oil cylinder fixing device solves the problem that an existing car arrester oil cylinder fixing device is not limited.

Description

Technical Field

[0001] This solution belongs to the technical field of coal mine transportation machinery, and specifically relates to a fixing device for the oil cylinder of an in-tank car arrester. Background Art

[0002] Referring to the literature with the existing publication (announcement) number CN205442356U, a fully automatic hydraulic car arrester is disclosed. A car arrester is a device to prevent mine cars, material cars, flatbed cars, etc. from sliding on their own. It is an important safety measure in the vertical shaft cage hoisting in coal mines. Its function is to block mine cars, material cars, flatbed cars, etc. when the vehicle enters the cage, prevent the vehicle from sliding out of the cage, play a positioning role when the vehicle enters the cage, and avoid the occurrence of a runaway accident during the cage hoisting process.

[0003] Referring to the literature with the existing publication (announcement) number CN219666427U, a fixing device is added to the tail of a hydraulic cylinder, including a vertical plate. Two limiting plates are fixedly arranged on the vertical plate, and a threaded rod is rotatably arranged between the two limiting plates. A motor is fixedly arranged on one of the limiting plates, and the output end of the motor is fixedly connected to the threaded rod. A long plate is fixedly arranged on the vertical plate, and a hydraulic cylinder is fixedly arranged on the long plate. A chute is opened on the vertical plate, and two symmetrically arranged clamping plates are slidably arranged on the chute. The two clamping plates penetrate through the chute and are threadedly connected to the threaded rod.

[0004] The above fixing device realizes that when installing the hydraulic cylinder, the staff first fixes the base of the hydraulic cylinder to the long plate through bolts, and then starts the motor to make the threaded rod fixed on the output end of the motor rotate. The two clamping plates are driven by the threaded rod to move downward to clamp the hydraulic cylinder to make it stable by setting two limiting plates on the vertical plate and a threaded rod rotatably arranged between the two limiting plates. However, since the device drives the threaded rod to rotate through the motor so that the clamping plate clamps the hydraulic cylinder, when the hydraulic cylinder vibrates during work, an impact force will be generated on the clamping plate, resulting in the loosening of the clamping force of the clamping plate on the hydraulic cylinder. At the same time, the clamping plate will slide along the direction of the threaded rod, causing the threaded rod to rotate in the reverse direction, so that the motor shaft rotates in the reverse direction due to the reverse torque, thus damaging the internal structure of the motor, such as components like inverters or encoders. Therefore, there is an urgent need for a fixing device for the oil cylinder of an in-tank car arrester that can limit the reverse rotation of the threaded rod. Summary of the Utility Model

[0005] The purpose of this solution is to provide a fixing device for the oil cylinder of an in-tank car arrester to solve the problem of no limit for the existing fixing device of the car arrester oil cylinder.

[0006] To achieve the above object, the present solution provides a fixing device for the oil cylinder of an in-tank vehicle stopper, which includes a bottom plate provided at the bottom of the oil cylinder. The bottom plate is provided with a through groove, and further includes a clamping assembly. The clamping assembly includes clamping plates and a bidirectional lead screw. The bidirectional lead screw is rotatably connected to the bottom plate. The clamping plates are two clamping plates with opposite thread directions, and one end passes through the through groove and is threadedly connected to the bidirectional lead screw. It further includes a limiting device for restricting the rotation of the bidirectional lead screw.

[0007] The principle of the present solution is as follows: A limiting device is provided to restrict the one-way rotation of the bidirectional lead screw, that is, to restrict the reverse rotation of the bidirectional lead screw, thereby locking the bidirectional lead screw, and thus realizing the stable clamping of the oil cylinder.

[0008] Further, one end of the bidirectional lead screw is fixedly connected with a mounting nut.

[0009] The principle and effect of the present solution are as follows: (1) A mounting nut is provided, and a wrench is used in cooperation with the mounting nut to rotate the bidirectional lead screw, so that the clamping plates clamp and fix the hydraulic cylinder. (2) In the present solution, the rotation of the bidirectional lead screw driven by a motor is cancelled, thereby avoiding the reverse rotation of the motor shaft driven by the bidirectional lead screw, and further causing damage to the inside of the motor. At the same time, in working places such as mines, it is not suitable to use a motor as a driving source to drive the rotation of the bidirectional lead screw. The present solution is more stable and resistant than a motor.

[0010] Further, the limiting device is a first nut; the bottom plate is symmetrically provided with mounting ears, the mounting ears are provided with through holes, one end of the bidirectional lead screw is rotatably arranged in the through hole of one of the mounting ears, the other end of the bidirectional lead screw passes through the through hole of the other mounting ear, and is threadedly connected to the first nut.

[0011] The principle and effect of the present solution are as follows: After the bidirectional lead screw rotates to drive the two clamping plates to clamp and fix the hydraulic oil cylinder, the first nut is screwed onto one end of the bidirectional lead screw, and the first nut is rotated until it abuts against the mounting ear, thereby restricting the rotation of the bidirectional lead screw.

[0012] Further, the limiting device is a second nut; the second nut is threadedly connected to the bidirectional lead screw, the second nut is coaxially fixedly connected with a first ratchet wheel, and a first pawl is rotatably connected to the mounting ear, and the first pawl is arranged in cooperation with the first ratchet wheel.

[0013] The principle and effect of the present solution are as follows: (1) Although the first nut can lock the bidirectional lead screw, due to the fact that the oil cylinder has been in a vibrating environment in the mine, the first nut will still loosen, resulting in the bidirectional lead screw losing its restriction and reversing. (2) In the present solution, by setting the first pawl and the first ratchet wheel, the two cooperate to lock the second nut and prevent the second nut from loosening.

[0014] Furthermore, the first nut is coaxially connected with a gear, a second pawl is provided on the mounting ear, a protrusion is connected to the rotating shaft of the second pawl, a spring is disposed through the rotating shaft, one end of the spring abuts against the protrusion, and the other end is cooperatively arranged with the second pawl; the gear is cooperatively arranged with the rotating shaft; a driving device is further included, and the driving device is used to drive the gear to rotate, and the second pawl is used to limit the rotation of the driving device.

[0015] The principle and effect of this solution are as follows: (1) Although the first ratchet wheel and the first pawl are provided to limit the reverse rotation of the second nut. However, the second nut may still become loose due to thread stripping. (2) In this solution, when the first nut becomes loose, it will abut against the second pawl and compress the spring, causing the second pawl to move away from the driving device, thereby detecting whether the first nut is loose. After the driving device loses the restriction of the second pawl, it drives the gear to rotate, thereby tightening the second nut again.

[0016] Furthermore, the driving device includes a second ratchet wheel and a turntable. The turntable is coaxially and fixedly connected with the second ratchet wheel. The second ratchet wheel is rotatably arranged on the frame. A energy storage torsion spring is disposed through the rotating shaft of the second ratchet wheel. The second pawl is cooperatively arranged with the second ratchet wheel; an incomplete rack is slidably arranged in the turntable. The incomplete rack is cooperatively arranged with the gear. The incomplete rack is connected with a return spring, and the free end of the return spring is fixedly connected with the rotating shaft of the turntable.

[0017] The principle and effect of this solution are as follows: By rotating the second ratchet wheel, the internal energy storage torsion spring is deformed and stores energy, and the second pawl is used to limit the reverse rotation of the second ratchet wheel. When the first nut becomes loose, the second pawl moves away from the second ratchet wheel. The second ratchet wheel rotates reversely under the drive of the energy storage torsion spring, so that the incomplete rack in the turntable is thrown out of the turntable under the action of centrifugal force and meshes with the gear, thereby driving the gear to rotate, and then tightening the first nut again. When the first nut is tightened, the second pawl is reset under the drive of the spring and abuts against the tooth gap of the second ratchet wheel again, thereby restricting the reverse rotation of the second ratchet wheel. At the same time, the incomplete rack loses the action of centrifugal force and is reset into the turntable under the drive of the return spring, so as not to mesh with the gear.

[0018] Furthermore, a chute is formed in the turntable, and the incomplete rack is slidably connected with the chute.

[0019] The principle and effect of this solution are as follows: The chute provides positioning and guiding functions for the movement of the incomplete rack thrown out under the action of centrifugal force.

[0020] Furthermore, limiting protrusions are arranged at both the head and the end of the chute.

[0021] The principle and effect of this solution are as follows: Prevent the incomplete rack from sliding beyond the limit position in the chute and causing dislocation.

[0022] Furthermore, rubber washers are provided on the first nut and the second nut.

[0023] The principle and effect of this solution are as follows: providing additional friction to prevent the first nut and the second nut from loosening.

[0024] Furthermore, an arc-shaped groove is provided on the mounting ear, and the back surface of the first pawl is slidably connected to the groove.

[0025] The principle and effect of this solution are as follows: the first pawl restricts the first ratchet wheel, and the first pawl will have a slight rotation. By providing the arc-shaped groove, it plays a role in positioning and guiding the rotation of the first pawl. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of an oil cylinder fixing device for an internal tank vehicle stopper of the present utility model;

[0027] Figure 2 is a schematic structural diagram of the limiting device of the present utility model Figure 1 ;

[0028] Figure 3 is a schematic structural diagram of the limiting device of the present utility model Figure 2 ;

[0029] Figure 4 is a schematic structural diagram of the limiting device of the present utility model Figure 3 ;

[0030] Figure 5 is a schematic structural diagram of the limiting device of the present utility model Figure 4 ;

[0031] Figure 6 is a cross-sectional view of the second pawl rotating shaft of the present utility model;

[0032] Figure 7 is a schematic internal structure diagram of the turntable of the present utility model.

[0033] The names of the corresponding marks in the drawings are: oil cylinder 1, bottom plate 2, through groove 21, mounting ear 22, clamping assembly 3, clamping plate 31, bidirectional lead screw 32, limiting device 4, first nut 41, second nut 42, first ratchet wheel 43, first pawl 44, gear 45, second pawl 46, rotating shaft 461, protrusion 462, spring 47, driving device 5, second ratchet wheel 51, turntable 52, sliding groove 521, incomplete rack 53, return spring 54, mounting nut 6. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The concept and technical effects of the present utility model will be clearly and completely described below in conjunction with embodiments to fully understand the purpose, features, and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts all fall within the scope of protection of the present utility model:

[0035] Embodiment 1:

[0036] Please refer to Figure 1 and Figure 2 , a fixing device for the oil cylinder of an in-tank vehicle arrester, which includes an oil cylinder 1. A bottom plate 2 is provided at the bottom of the oil cylinder 1. A through groove 21 is opened on the bottom plate 2. Mounting ears 22 are symmetrically arranged at the bottom of the bottom plate 2. Through holes are opened on the mounting ears 22. A clamping assembly 3 for clamping the oil cylinder 1 is provided on the bottom plate 2. This is the prior art and can refer to a fixing device added to the tail of a hydraulic cylinder in CN219666427U. The clamping assembly 3 includes a bidirectional lead screw 32 and two symmetrically arranged clamping plates 31. One end of the bidirectional lead screw 32 is rotatably arranged in the through hole of one of the mounting ears 22. The other end of the bidirectional lead screw 32 passes through the through hole of the other mounting ear 22. An installation nut 6 is fixedly connected to one end of the bidirectional lead screw 32. The installation nut 6 is provided. By cooperating with the installation nut 6 with a wrench, the bidirectional lead screw 32 is rotated, so that the clamping plate 31 clamps and fixes the oil cylinder 1. At the same time, the rotation of the bidirectional lead screw 32 driven by the motor is cancelled, so as to avoid the reverse rotation of the motor rotating shaft driven by the bidirectional lead screw 32, thereby causing damage to the inside of the motor. At the same time, in working places such as mines, it is not suitable to use a motor as a driving source to drive the rotation of the bidirectional lead screw 32. Therefore, it is more stable and resistant than a motor.

[0037] Embodiment 2:

[0038] Please refer to Figure 2 , and it further includes a limiting device 4. The limiting device 4 is a first nut 41. One end of the bidirectional lead screw 32 is threadedly connected to the first nut 41. After the bidirectional lead screw 32 rotates to drive the two clamping plates 31 to clamp and fix the oil cylinder 1, the first nut 41 is threadedly screwed into one end of the bidirectional lead screw 32, and the first nut 41 is rotated until it abuts against the mounting ear 22, thereby restricting the rotation of the bidirectional lead screw 32.

[0039] Embodiment 3:

[0040] Although the first nut 41 in Embodiment 2 can lock the bidirectional lead screw 32, since the oil cylinder 1 is always in a vibrating environment in the mine, the first nut 41 will still become loose, resulting in the bidirectional lead screw 32 losing its restriction and reversing.

[0041] Please refer to Figure 3, in this embodiment, the limiting device 4 is the second nut 42; the second nut 42 is threadedly connected to the bidirectional lead screw 32, the second nut 42 is coaxially and fixedly connected with a first ratchet wheel 43, a first pawl 44 is rotatably connected to the mounting ear 22, and the first pawl 44 is arranged in cooperation with the first ratchet wheel 43. By providing the first pawl 44 and the first ratchet wheel 43, the two cooperate with each other to lock the second nut 41 and prevent the second nut 41 from loosening.

[0042] Embodiment 4:

[0043] Although the first ratchet wheel 43 and the first pawl 44 are provided in Embodiment 2 to limit the reverse rotation of the second nut 41. However, the second nut 41 may still become loose due to thread stripping.

[0044] Please refer to Figures 4 - 7 , in this embodiment, the first nut 41 is coaxially connected with a gear 45, a second pawl 46 is provided on the mounting ear 22, a protrusion 462 is connected to the rotating shaft 461 of the second pawl 46, a spring 47 is disposed through the rotating shaft 461, one end of the spring 47 abuts against the protrusion 462, and the other end is arranged in cooperation with the second pawl 46, and the gear 45 is arranged in cooperation with the rotating shaft 461. It should be noted here that the rotating shaft 461 can move up and down, so that the second pawl 46 moves up and down to engage or disengage from the tooth gap of the ratchet wheel.

[0045] It further includes a driving device 5. The driving device 5 includes a second ratchet wheel 51 and a turntable 52. The turntable 52 is coaxially and fixedly connected with the second ratchet wheel 51. The second ratchet wheel 51 is rotatably arranged on a frame (not shown in the figure). A energy storage torsion spring is disposed through the rotating shaft of the second ratchet wheel 51. The second pawl 46 is arranged in cooperation with the second ratchet wheel 51; a chute 521 is formed in the turntable 52. An incomplete rack 53 is slidably arranged in the chute 521, and limiting protrusions (not shown in the figure) are provided at both the head and the end of the chute 521. The chute 521 provides positioning and guiding functions for the incomplete rack 53 to be thrown out and moved under the action of centrifugal force, and the limiting protrusions prevent the incomplete rack 53 from sliding beyond the limit position in the chute 521 and causing dislocation. The incomplete rack 53 is arranged in cooperation with the gear 45. The incomplete rack 53 is connected with a return spring 54, and the free end of the return spring 54 is fixedly connected with the rotating shaft of the turntable 52.

[0046] The internal energy storage torsion spring is deformed and stores energy by rotating the second ratchet wheel 51, and the reverse rotation of the second ratchet wheel 51 is restricted by the second pawl 46. When the first nut 41 becomes loose, it will abut against the second pawl 46 and compress the spring 47, causing the second pawl 46 to move away from the second ratchet wheel 51. The second ratchet wheel 51 rotates in the reverse direction driven by the energy storage torsion spring, so that the incomplete rack 53 in the turntable 52 is thrown out of the turntable 52 under the action of centrifugal force and meshes with the gear 45, thereby driving the gear 45 to rotate, and further tightening the first nut 41 again. When the first nut 41 is tightened, the second pawl 46 is reset driven by the spring 47 and abuts against the tooth gap of the second ratchet wheel 51 again, thereby restricting the reverse rotation of the second ratchet wheel 51. At the same time, the incomplete rack 53 loses the action of centrifugal force and is reset into the turntable 52 driven by the return spring 54, so that it does not mesh with the gear 45.

[0047] The above are only embodiments of the present invention, and common knowledge such as specific structures and characteristics known in the solutions is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A tank brake cylinder fixing device, comprising a base plate (2) arranged at the bottom of the cylinder (1), the base plate (2) being provided with a through slot (21), and a clamping assembly (3), the clamping assembly (3) comprising a clamping plate (31) and a bidirectional screw rod (32), the bidirectional screw rod (32) being rotatably connected to the base plate (2), the clamping plate (31) being two clamping plates (31) with opposite thread rotation directions, and one end of the clamping plate (31) passing through the through slot (21) and being threadedly connected to the bidirectional screw rod (32); characterized in that: It also includes a limiting device (4), wherein the limiting device (4) is used to limit the rotation of the bidirectional screw rod (32).

2. The oil cylinder fixing device for an in-tank car blocker according to claim 1 is characterized in that: One end of the bidirectional screw rod (32) is fixedly connected to a mounting nut (6).

3. The oil cylinder fixing device for an in-tank car arrester according to claim 1 is characterized in that: The limiting device (4) is a first nut (41); the base plate (2) is symmetrically provided with mounting ears (22), the mounting ears (22) are provided with through holes, one end of the bidirectional screw rod (32) is rotatably arranged in the through hole of one of the mounting ears (22), and the other end of the bidirectional screw rod (32) passes through the through hole of the other mounting ear (22) and is threadedly connected to the first nut (41).

4. The oil cylinder fixing device for an in-tank car arrester according to claim 3 is characterized in that: The limiting device (4) is a second nut (42); the second nut (42) is threadedly connected to the bidirectional screw rod (32); the second nut (42) is coaxially fixedly connected to a first ratchet (43); the mounting ear (22) is rotatably connected to a first pawl (44); the first pawl (44) is arranged in cooperation with the first ratchet (43).

5. The oil cylinder fixing device for an in-tank car arrester according to claim 3 is characterized in that: The first nut (41) is coaxially connected to a gear (45); the mounting ear (22) is provided with a second pawl (46); a rotating shaft (461) of the second pawl (46) is connected to a protrusion (462); a spring (47) is passed through the rotating shaft (461); one end of the spring (47) contacts the protrusion (462); the other end of the spring (47) is matched with the second pawl (46); the gear (45) is matched with the rotating shaft (461); and a driving device (5) is further included, the driving device (5) being used to drive the gear (45) to rotate; the second pawl (46) being used to limit the rotation of the driving device (5).

6. The oil cylinder fixing device for an in-tank car arrester according to claim 5 is characterized in that: The driving device (5) comprises a second ratchet (51) and a rotating disk (52), wherein the rotating disk (52) is coaxially fixedly connected to the second ratchet (51), the second ratchet (51) is rotatably arranged on a frame, the rotating shaft of the second ratchet (51) is penetrated by an energy storage torsion spring, and the second pawl (46) is arranged in cooperation with the second ratchet (51); an incomplete rack (53) is slidably arranged in the rotating disk (52), the incomplete rack (53) is arranged in cooperation with the gear (45), the incomplete rack (53) is connected to a reset spring (54), and the free end of the reset spring (54) is fixedly connected to the rotating shaft of the rotating disk (52).

7. The oil cylinder fixing device for an in-tank car arrester according to claim 6 is characterized in that: The rotating disk (52) is provided with a sliding groove (521), and the incomplete rack (53) is slidably connected to the sliding groove (521).

8. The oil cylinder fixing device for an in-tank car blocker according to claim 7 is characterized in that: The first and second ends of the slide groove (521) are both provided with limiting protrusions.

9. The oil cylinder fixing device for an in-tank car blocker according to claim 5, characterized in that: The first nut (41) and the second nut (42) are provided with rubber washers.

10. The oil cylinder fixing device for an in-tank car arrester according to claim 4, characterized in that: An arc-shaped groove is provided on the mounting ear (22), and the back surface of the first pawl (44) is slidably connected to the groove.

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