Chain-driven turn-back type electric cylinder

Abstract

The utility model belongs to the technical field of electric cylinders, particularly relates to a chain-driven turn-back type electric cylinder, and aims to solve the problems that when an existing turn-back type electric cylinder is operated, due to the fact that an oil injection lubrication structure is not arranged, an electric cylinder body is prone to being seriously abraded when driving, and operation precision and stability are affected. According to the technical scheme, the device comprises a base, a driving motor is fixedly installed at the top of the base, a fixed seat is fixedly installed at the top of the base, a sliding groove is formed in the top of the fixed seat, a screw rod is rotationally connected to the inner wall of the sliding groove, a movable seat is slidably connected to the inner wall of the sliding groove, and a threaded hole is formed in the movable seat; and the threaded hole is in threaded connection with the screw rod, and an output rod is fixedly installed on one side of the movable base. The electric cylinder is easy to operate and convenient to use, the screw in the electric cylinder can be conveniently and continuously oiled and lubricated, and the stability and accuracy of the electric cylinder can be conveniently kept.

Description

Technical Field

[0001] The utility model relates to the technical field of electric cylinders, in particular to a chain-driven return-type electric cylinder. Background Art

[0002] The electric cylinder is a modular product that integrates a servo motor and a lead screw. It converts the rotational motion of the servo motor into linear motion to achieve high-precision linear motion.

[0003] Application No. 202222257312.3 discloses a chain-driven reciprocating electric cylinder, including an electric cylinder body and a driving motor; the driving motor provides power for the electric cylinder body to perform telescopic linear motion; the electric cylinder body includes a screw; a chain transmission device is used between the driving motor and the electric cylinder body to achieve power output for the linear motion of the electric cylinder body. Compared with belt transmission, the utility model adopts chain transmission, which can withstand greater loads, does not have elastic sliding and slipping, has higher transmission efficiency, and can provide accurate transmission ratios, thereby improving the operating accuracy of the electric cylinder; compact structure, smaller size, more adaptable to a variety of usage scenarios, and at the same time, compared with gear transmission, the number of parts is less and the structure is more convenient; low maintenance cost, chain transmission does not require the addition of a large amount of lubricating oil compared with gear transmission, and does not need to be replaced frequently, saving maintenance difficulty and reducing the cost of use.

[0004] When the existing reciprocating electric cylinder is in operation, there is no oil injection lubrication structure, which causes the electric cylinder body to be easily worn when driving, thereby affecting the operation accuracy and stability. Therefore, we propose a chain-driven reciprocating electric cylinder. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the existing reciprocating electric cylinder has no oil lubrication structure during operation, which causes the electric cylinder body to be easily worn out during driving, thereby affecting the operating accuracy and stability, and to propose a chain-driven reciprocating electric cylinder.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A chain-driven reciprocating electric cylinder comprises a base, a driving motor is fixedly installed on the top of the base, a fixed seat is fixedly installed on the top of the base, a sliding groove is opened on the top of the fixed seat, a screw is rotatably connected on the inner wall of the sliding groove, a moving seat is slidably connected on the inner wall of the sliding groove, a threaded hole is opened on the moving seat, the threaded hole is threadedly connected to the screw, an output rod is fixedly installed on one side of the moving seat, a first sprocket is fixedly provided on the output shaft of the driving motor, a second sprocket is fixedly provided on the screw, the first sprocket and the second sprocket are meshed with the same chain, an oil tank is fixedly installed on the top of the moving seat, an oil guide mechanism is provided on the moving seat, the oil guide mechanism cooperates with the screw, an adjustment mechanism is provided in the oil tank, and the adjustment mechanism cooperates with the oil guide mechanism.

[0008] Preferably, the oil guide mechanism comprises a guide hole, which is provided on the top of the movable seat, a positioning groove is provided on the inner wall of the threaded hole, the guide hole and the positioning groove are connected to each other, and the guide hole and the oil tank are connected to each other.

[0009] Preferably, a cam is slidably connected to the screw, the cam is rotatably connected to the inner wall of the positioning groove, a sliding hole is provided on one side of the cam, the sliding hole is slidably connected to the screw, a limiting groove is provided on the screw, a limiting block is slidably connected to the inner wall of the limiting groove, and the limiting block is fixedly connected to the inner wall of the sliding hole.

[0010] Preferably, a movable plate is slidably connected to the inner wall of the positioning groove, a plug is fixedly installed on the top of the movable plate, the plug cooperates with the guide hole, a return spring is fixedly installed on the top of the plug, and the top of the return spring is fixedly connected to the top inner wall of the positioning groove.

[0011] Preferably, the adjustment mechanism includes a fixed tube, which is fixedly mounted on the bottom inner wall of the oil tank, and has two symmetrically arranged through holes. The outer side of the fixed tube is slidably connected to the adjustment tube, and the adjustment tube cooperates with the two through holes.

[0012] Preferably, a screw rod is threadedly connected to the top of the oil tank, the screw rod is threadedly connected to the adjusting tube, and a rotating block is fixedly installed on the top of the screw rod.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] (1) In this solution, due to the sliding connection between the limit groove and the limit block, and the cooperation between the cam and the movable plate, under the action of the reset spring, the rotating screw can drive the movable seat to move, and at the same time, the oil in the guide hole can be intermittently introduced into the positioning groove and lubricated to the screw;

[0015] (2) Due to the cooperation between the fixed tube and the guide hole, and the cooperation between the two through holes and the regulating tube, the oil in the oil tank can be discharged and the amount of oil can be adjusted, which is convenient for people to use.

[0016] The utility model is simple to operate and easy to use, and can facilitate continuous oil injection and lubrication of the screw rod in the electric cylinder, so as to facilitate maintaining the stability and accuracy of the electric cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a chain-driven reciprocating electric cylinder proposed by the utility model;

[0018] Figure 2 This is a side structural schematic diagram of a chain-driven reciprocating electric cylinder proposed by the utility model;

[0019] Figure 3 It is a schematic diagram of the side cross-sectional structure of a movable seat of a chain-driven reciprocating electric cylinder proposed by the utility model;

[0020] Figure 4 This is a schematic cross-sectional structure diagram of a screw rod and a moving seat of a chain-driven reversible electric cylinder proposed in the utility model;

[0021] Figure 5 The utility model is a schematic structural diagram of part A of a chain-driven reciprocating electric cylinder.

[0022] In the figure: 1. base; 2. driving motor; 3. fixed seat; 4. moving seat; 5. screw; 6. first sprocket; 7. second sprocket; 8. chain; 9. oil tank; 10. guide hole; 11. positioning groove; 12. sliding groove; 13. cam; 14. movable plate; 15. plug; 16. return spring; 17. sliding hole; 18. limit groove; 19. limit block; 20. fixed tube; 21. through hole; 22. adjusting tube; 23. screw; 24. rotating block; 25. output rod. DETAILED DESCRIPTION

[0023] The technical solution of this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of this embodiment, rather than all of the embodiments.

[0024] Embodiment 1

[0025] Reference Figure 1-Figure 5A chain-driven return electric cylinder comprises a base 1, a driving motor 2 is fixedly installed on the top of the base 1, a fixed seat 3 is fixedly installed on the top of the base 1, a sliding groove 12 is provided on the top of the fixed seat 3, a screw rod 5 is rotatably connected to the inner wall of the sliding groove 12, a moving seat 4 is slidably connected to the inner wall of the sliding groove 12, a threaded hole is provided on the moving seat 4, the threaded hole is threadedly connected to the screw rod 5, an output rod 25 is fixedly installed on one side of the moving seat 4, a first sprocket 6 is fixedly sleeved on the output shaft of the driving motor 2, a second sprocket 7 is fixedly sleeved on the screw rod 5, the first sprocket 6 and the second sprocket 7 are meshed with the same chain 8, an oil tank 9 is fixedly installed on the top of the moving seat 4, an oil guide mechanism is provided on the moving seat 4, the oil guide mechanism cooperates with the screw rod 5, an adjusting mechanism is provided in the oil tank 9, and the adjusting mechanism cooperates with the oil guide mechanism.

[0026] In this embodiment, the oil guide mechanism includes a guide hole 10, which is provided at the top of the movable seat 4, a positioning groove 11 is provided on the inner wall of the threaded hole, the guide hole 10 is connected to the positioning groove 11, and the guide hole 10 is connected to the oil tank 9, a cam 13 is slidably connected to the screw 5, the cam 13 is rotatably connected to the inner wall of the positioning groove 11, a sliding hole 17 is provided on one side of the cam 13, the sliding hole 17 is slidably connected to the screw 5, a limiting groove 18 is provided on the screw 5, a limiting block 19 is slidably connected to the inner wall of the limiting groove 18, and the limiting block 19 is fixedly connected to the inner wall of the sliding hole 17, and a movable plate 14 is slidably connected to the inner wall of the positioning groove 11, and the top of the movable plate 14 is fixed. A plug block 15 is installed, and the plug block 15 cooperates with the guide hole 10. A return spring 16 is fixedly installed on the top of the plug block 15. The top of the return spring 16 is fixedly connected to the top inner wall of the positioning groove 11. The guide hole 10 can guide the oil in the oil tank 9 and inject it into the positioning groove 11, so as to lubricate the screw 5. At the same time, the rotating screw 5 is slidably connected with the limit block 19 through the limit groove 18, so as to drive the cam 13 to rotate. The rotating cam 13 cooperates with the movable plate 14 and drives the plug block 15 to move up and down under the action of the return spring 16, so as to intermittently introduce the oil in the guide hole 10, so as to facilitate continuous oil filling.

[0027] In this embodiment, the adjustment mechanism includes a fixed tube 20, which is fixedly mounted on the bottom inner wall of the oil tank 9. Two symmetrically arranged through holes 21 are provided on the fixed tube 20. An adjusting tube 22 is slidably connected to the outer side of the fixed tube 20. The adjusting tube 22 cooperates with the two through holes 21. A screw rod 23 is threadedly connected to the top of the oil tank 9. The screw rod 23 is threadedly connected to the adjusting tube 22. A rotating block 24 is fixedly mounted on the top of the screw rod 23. The oil in the oil tank 9 is introduced into the guide hole 10 through the through hole 21, and is introduced into the positioning groove 11 and the screw rod 5 through the guide hole 10. When the oil injection amount needs to be adjusted, the rotating block 24 is rotated, and the rotating block 24 drives the screw rod 23 to rotate. The screw rod 23 is threadedly connected to the adjusting tube 22, so that the position of the adjusting tube 22 can be adjusted, and then the overlap between the adjusting tube 22 and the through hole 21 can be adjusted, so as to facilitate the adjustment of the oil guide amount.

[0028] Working principle: when working, the output shaft of the driving motor 2 is meshed with the first sprocket 6, the second sprocket 7 and the chain 8, so that the screw 5 can be driven to rotate. The oil in the oil tank 9 is introduced into the guide hole 10 through the through hole 21, and is introduced into the positioning groove 11 and the screw 5 through the guide hole 10. When the oil injection amount needs to be adjusted, the rotating block 24 is rotated, and the rotating block 24 drives the screw 23 to rotate. The screw 23 is connected with the adjusting tube 22 through the thread, so that the position of the adjusting tube 22 can be adjusted, and then the overlap between the adjusting tube 22 and the through hole 21 can be adjusted, which is convenient for adjusting the oil conduction amount. The rotating screw 5 is limited by the limit The positioning groove 18 is slidably connected with the limit block 19, thereby driving the cam 13 to rotate. The rotating cam 13 cooperates with the movable plate 14 and drives the plug 15 to move up and down under the action of the return spring 16, so that the oil in the guide hole 10 can be intermittently introduced to facilitate continuous oil filling. The guide hole 10 can export the oil in the oil tank 9 and inject it into the positioning groove 11, so as to lubricate the screw 5. The rotating screw 5 drives the moving seat 4 to move through the threaded connection with the moving seat 4, and the moving seat 4 drives the output rod 25 to move, thereby forming a pushing effect.

[0029] Embodiment 2

[0030] The difference between the second embodiment and the first embodiment is that a cleaning mechanism is provided on the fixing seat 3, and the setting of the cleaning mechanism can facilitate the cleaning of dust in the sliding groove 12 to prevent the dust from affecting the use of the device.

[0031] The above is only a preferred specific implementation of this embodiment, but the protection scope of this embodiment is not limited to this. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of this embodiment within the technical scope disclosed in this embodiment, which should be covered by the protection scope of this embodiment.

Claims

1. A chain-driven reciprocating electric cylinder, comprising a base (1), characterized in that: A driving motor (2) is fixedly mounted on the top of the base (1), a fixed seat (3) is fixedly mounted on the top of the base (1), a sliding groove (12) is provided on the top of the fixed seat (3), a screw rod (5) is rotatably connected to the inner wall of the sliding groove (12), a moving seat (4) is slidably connected to the inner wall of the sliding groove (12), a threaded hole is provided on the moving seat (4), the threaded hole is threadedly connected to the screw rod (5), and an output rod (12) is fixedly mounted on one side of the moving seat (4). 25), a first sprocket (6) is fixedly sleeved on the output shaft of the driving motor (2), a second sprocket (7) is fixedly sleeved on the screw (5), the first sprocket (6) and the second sprocket (7) are meshed with a same chain (8), an oil tank (9) is fixedly mounted on the top of the movable seat (4), an oil guide mechanism is provided on the movable seat (4), the oil guide mechanism cooperates with the screw (5), an adjustment mechanism is provided in the oil tank (9), the adjustment mechanism cooperates with the oil guide mechanism.

2. A chain-driven reciprocating electric cylinder according to claim 1, characterized in that: The oil guide mechanism comprises a guide hole (10), the guide hole (10) is provided at the top of the movable seat (4), a positioning groove (11) is provided on the inner wall of the threaded hole, the guide hole (10) and the positioning groove (11) are communicated with each other, and the guide hole (10) and the oil tank (9) are communicated with each other.

3. The chain-driven reciprocating electric cylinder according to claim 2, characterized in that: The screw rod (5) is slidably connected with a cam (13), the cam (13) is rotatably connected with the inner wall of the positioning groove (11), a sliding hole (17) is provided on one side of the cam (13), the sliding hole (17) is slidably connected with the screw rod (5), a limiting groove (18) is provided on the screw rod (5), a limiting block (19) is slidably connected with the inner wall of the limiting groove (18), and the limiting block (19) is fixedly connected with the inner wall of the sliding hole (17).

4. The chain-driven reciprocating electric cylinder according to claim 3, characterized in that: A movable plate (14) is slidably connected to the inner wall of the positioning groove (11), a plug block (15) is fixedly installed on the top of the movable plate (14), the plug block (15) and the guide hole (10) cooperate with each other, a return spring (16) is fixedly installed on the top of the plug block (15), and the top end of the return spring (16) is fixedly connected to the top inner wall of the positioning groove (11).

5. The chain-driven reciprocating electric cylinder according to claim 1, characterized in that: The regulating mechanism comprises a fixed tube (20), the fixed tube (20) being fixedly mounted on the bottom inner wall of the oil tank (9), the fixed tube (20) being provided with two symmetrically arranged through holes (21), an regulating tube (22) being slidably connected to the outer side of the fixed tube (20), and the regulating tube (22) and the two through holes (21) being matched with each other.

6. The chain-driven reciprocating electric cylinder according to claim 5, characterized in that: A screw rod (23) is threadedly connected to the top of the oil tank (9), the screw rod (23) is threadedly connected to the regulating tube (22), and a rotating block (24) is fixedly installed on the top of the screw rod (23).

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