Efficient grinding device for walking motor swash plate

Abstract

The invention belongs to the technical field of machining, and discloses a walking motor swash plate efficient grinding device which comprises a grinding device body, an operation table is fixedly installed on one side of the grinding device body, a grinding structure is installed at the bottom end of the grinding device body, a swash plate is arranged below the grinding structure, and the swash plate is arranged at the top end of the operation table. Clamping assemblies are arranged on the two sides of the swash plate, and a pushing assembly is arranged below the swash plate. Through mutual cooperation of the arranged clamping assembly and the pushing assembly, when the device needs to be used for grinding the walking motor swash plate, firstly, one side of the swash plate is pushed through the pushing assembly, so that the end face of the swash plate tends to be flat, then the motor is started through an external power source, and two clamping plates move towards the swash plate; and after the swash plate is clamped, the surface of the swash plate is ground through the grinding structure, so that the problem that the grinding efficiency is not high due to the fact that workpieces are too heavy and are easy to be ground to be deviated due to the weight difference is solved, and the grinding efficiency of the device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a high-efficiency grinding device for a swash plate of a travel motor. Background Art

[0002] Due to China's sustained rapid development over the years and strong demand for infrastructure, construction machinery has become the world's largest consumer. In the past few years, leading domestic enterprises such as Sany Heavy Industry and XCMG Group have achieved a counterattack. Domestic brands of construction machinery equipment have occupied more than 70% of the Chinese market. As a result, my country's construction machinery has also become a major production country in the world. The domestic substitution of hydraulic pumps and motors, which is the core bottleneck, is also not to be outdone. A number of excellent companies have emerged, but with the increase in production capacity of each company, the industry has triggered increasingly fierce competition.

[0003] The price reduction of the main engine manufacturer triggered the price reduction of the hydraulic pump motor of the second-tier supplier, which in turn led to the price reduction of the product. The travel motor of the hydraulic part controls the flow of the inclined plate. Since the sliding shoe travels on it, the flatness and smoothness of the surface are required to be very high. Due to the characteristics of the product, the part is very heavy, and grinding the surface is not an easy task. Generally, it takes a long time to grind this kind of product, which accounts for a large part of the cost. Therefore, efficient grinding of the inclined plate has always been the main goal of various companies.

[0004] The travel motor swash plate refers to a device used to drive the travel mechanism, which is commonly found in industrial and mechanical equipment. It is usually composed of an electric motor, a transmission device and a swash plate. The working principle of the travel motor swash plate is to provide power through an electric motor to convert rotational motion into linear motion. The motor drives the transmission device to tilt the swash plate, thereby pushing the equipment forward or backward. Since the sliding shoe walks on it, the flatness and smoothness of the surface are very high. Due to the characteristics of the product, the part is seriously heavy, and grinding the surface is not an easy task. Generally, grinding of such products takes a long time, which accounts for most of the cost.

[0005] There are two main methods of existing grinding processing. One method is to use a tool to grind the plane with a grinding wheel first, and then grind it using the LAPPING method; the other method is to spend time grinding directly on the LAPPING machine. Although the inclined plate can be ground by the above methods, the workpiece is heavy and the weight difference of the workpiece is easy to grind off-center, resulting in low grinding efficiency. Summary of the invention

[0006] The object of the present invention is to provide a high-efficiency grinding device for a swash plate of a travel motor to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a traveling motor swash plate high-efficiency grinding device, comprising a grinding device body, an operating table is fixedly installed on one side of the grinding device body, a grinding structure is installed at the bottom end of the grinding device body, a swash plate is arranged below the grinding structure, the swash plate is arranged at the top of the operating table, clamping components are arranged on both sides of the swash plate, and a pushing component is arranged below the swash plate; Among them, the clamping assembly includes clamping plates arranged on both sides of the swash plate, the bottom ends of the two clamping plates are fixedly connected with the first connecting plate, the ends of the two first connecting plates away from the clamping plates are fixedly installed with rack plates, the two rack plates are meshed with a first gear, one side of the first gear is meshed with a second gear, and the second gear is rotatably installed inside the operating table, and the two clamping plates are moved toward the direction of the swash plate through the clamping assembly, and the surface of the swash plate is ground by the grinding structure after the swash plate is clamped, thereby improving the grinding efficiency of the device on the swash plate.

[0008] The internal thread of the first gear is connected with a positioning shaft, and the positioning shaft is slidably installed inside the operating table to play a preliminary positioning effect on the swash plate, making it convenient for the clamping assembly to fix it.

[0009] As a further technical solution of the present invention, a slider is fixedly installed on the outer wall of the positioning shaft, and the slider is slidably installed inside a limiting groove. The limiting groove is opened inside the operating table, so that the positioning shaft can only move up and down inside the operating table.

[0010] As a further technical solution of the present invention, a clamping block is slidably installed inside the clamping plate, and a first spring is arranged between the clamping plate and the clamping block. The two ends of the first spring are respectively fixedly connected to the clamping plate and the clamping block. Through the elastic force of the first spring, the clamping block exerts low pressure on the outer wall of the inclined plate, thereby achieving a preliminary pre-fixing effect.

[0011] As a further technical solution of the present invention, a magnetic block is fixedly installed inside the clamping plate, and the magnetic block is arranged on one side of the clamping block. When grinding the inclined plate of the same size, the inclined plate can be replaced directly by directly disconnecting and energizing the magnetic block, thereby improving the grinding efficiency.

[0012] As a further technical solution of the present invention, the pushing assembly includes a push plate arranged below the swash plate, a connecting shaft is arranged at the bottom end of the push plate, an electric push rod is fixedly installed at the bottom end of the connecting shaft, and the electric push rod is installed inside the operating table so that the push plate moves upward to drive the swash plate to move, so that the end surface of the swash plate is as flat as possible to facilitate grinding.

[0013] As a further technical solution of the present invention, the push plate is rotationally connected to the connecting shaft, so that the push plate rotates after contacting the swash plate, thereby increasing the contact surface between the push plate and the bottom end of the swash plate and improving stability.

[0014] As a further technical solution of the present invention, a sliding plate is hinged on one side of the push plate, and a second connecting plate is sleeved on the outer wall of the bottom end of the sliding plate. The second connecting plate is fixedly installed inside the operating table, and a sliding rod is installed on one side of the sliding plate. The sliding rod is slidably installed inside the first sliding groove, and the first sliding groove is opened inside the second connecting plate.

[0015] As a further technical solution of the present invention, second sliding grooves are evenly opened inside the second connecting plate, a connecting rod is provided on one side of the sliding rod, and the connecting rod is fixedly installed on one side of the first connecting plate, so that the angle of the push plate is fixed when the clamping plate is clamped on the inclined plate, thereby ensuring stability when the inclined plate is polished.

[0016] As a further technical solution of the present invention, a second spring is arranged inside the sliding plate, and the two ends of the second spring are fixedly connected to the sliding plate and the sliding rod respectively, so that when the clamping assembly releases the inclined plate, the sliding rod is reset, which is convenient for adjusting the rotation angle of the push plate.

[0017] The beneficial effects of the present invention are as follows: 1. The present invention cooperates with the setting of the clamping assembly and the pushing assembly. When the device is needed to grind the swash plate of the travel motor, the swash plate is first placed between the two clamping plates, the thin surface of the swash plate is placed on the top of the pushing assembly, and one side of the swash plate is pushed by the pushing assembly to make the end surface of the swash plate tend to be flat, and then the motor is started by an external power supply. Since a motor is installed at the bottom end of the second gear, the output end of the motor is fixedly connected to the rotating shaft of the second gear, and the input end of the motor is electrically connected to the external power supply through a wire, the second gear can be driven to rotate by starting the motor, and the rotation of the second gear drives the rotation of the first gear. The rotation of the first gear drives the rack plate to move, and the movement of the rack plate drives the first connecting plate and the clamping plate to move, so that the two clamping plates move toward the direction of the swash plate. After the swash plate is clamped, the surface of the swash plate is ground by the grinding structure, thereby avoiding the problem of low grinding efficiency due to the weight difference of the workpiece and the weight difference of the workpiece, thereby improving the grinding efficiency of the device.

[0018] 2. The present invention uses a positioning shaft connected to the internal thread of the first gear. When installing the swash plate, the swash plate can be sleeved on the outer wall of the positioning shaft to achieve a preliminary positioning effect on the swash plate. There is no need for a clamping assembly to support the swash plate for auxiliary fixation by a worker when fixing the swash plate, which facilitates the clamping assembly to fix it and subsequent operations, thereby improving the convenience of equipment operation. When the swash plate is installed and needs to be ground, the positioning shaft can be driven to move downward inside the operating table through the rotation of the first gear, so that the positioning shaft is lower than the top end of the swash plate, thereby ensuring the flatness of the surface of the swash plate and preventing the top end of the positioning shaft from touching the surface of the swash plate when the grinding structure is grinding the surface of the swash plate, thereby affecting the grinding effect of the device, thereby facilitating the grinding of the surface of the swash plate.

[0019] 3. The present invention has a first slide groove and a second slide groove opened inside the second connecting plate. When the end surface of the inclined plate tends to be flat, the movement of the connecting rod can push the movement of the slide rod to make the slide rod slide into the second slide groove. The second slide groove is vertically arranged to the first slide groove. The slide rod is limited by the second slide groove so that the sliding plate cannot slide inside the second connecting plate, thereby making the push plate unable to rotate, so that the inclined plate can remain flat when the device is grinding, thereby ensuring the stability of the inclined plate during grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 It is a schematic diagram of the cross-sectional structure of the operating table of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at B in the middle; Figure 6 For the present invention Figure 4 A magnified schematic diagram of the structure at C in the middle; Figure 7 This is a schematic diagram of the cross-sectional structure of the driving component of the present invention; Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point D in the middle.

[0021] In the figure: 1. Grinding device body; 2. Operating table; 3. Grinding structure; 4. Inclined plate; 5. Clamping plate; 6. First connecting plate; 7. Rack plate; 8. First gear; 9. Second gear; 10. Positioning shaft; 11. Clamping block; 12. First spring; 13. Magnetic block; 14. Push plate; 15. Connecting shaft; 16. Electric push rod; 17. Sliding plate; 18. Second connecting plate; 19. Sliding rod; 20. First slide groove; 21. Second slide groove; 22. Second spring; 23. Connecting rod; 24. Sliding block; 25. Limiting groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figures 1 to 8 As shown, in the embodiment of the present invention, a traveling motor swash plate high-efficiency grinding device comprises a grinding device body 1, an operating table 2 is fixedly installed on one side of the grinding device body 1, a grinding structure 3 is installed at the bottom end of the grinding device body 1, a swash plate 4 is arranged below the grinding structure 3, the swash plate 4 is arranged at the top of the operating table 2, clamping components are arranged on both sides of the swash plate 4, and a pushing component is arranged below the swash plate 4; Among them, the clamping assembly includes clamping plates 5 arranged on both sides of the inclined plate 4, the bottom ends of the two clamping plates 5 are fixedly connected with the first connecting plates 6, the ends of the two first connecting plates 6 away from the clamping plates 5 are fixedly installed with rack plates 7, the two rack plates 7 are meshed with a first gear 8, one side of the first gear 8 is meshed with a second gear 9, and the second gear 9 is rotatably installed inside the operating table 2.

[0024] By cooperating with the provided clamping assembly and the pushing assembly, when the device is needed to grind the travel motor swash plate 4, the swash plate 4 is first placed between the two clamping plates 5, the thin surface of the swash plate 4 is placed on the top of the pushing assembly, and one side of the swash plate 4 is pushed by the pushing assembly to make the end surface of the swash plate 4 tend to be flat, and then the motor is started by an external power supply. Since a motor is installed at the bottom end of the second gear 9, the output end of the motor is fixedly connected to the rotating shaft of the second gear 9, and the input end of the motor is electrically connected to the external power supply through a wire, the second gear 9 can be driven to rotate by starting the motor, and the rotation of the second gear 9 drives the rotation of the first gear 8, and the rotation of the first gear 8 drives the rack plate 7 to move, and the movement of the rack plate 7 drives the first connecting plate 6 and the clamping plate 5 to move, so that the two clamping plates 5 move toward the direction of the swash plate 4, and the surface of the swash plate 4 is ground by the grinding structure 3 after the swash plate 4 is clamped, thereby avoiding the problem of low grinding efficiency due to the unbalanced weight of the workpiece and the weight difference of the workpiece, thereby improving the grinding efficiency of the device.

[0025] like Figure 1-5 As shown, the internal thread of the first gear 8 is connected with a positioning shaft 10 , and the positioning shaft 10 is slidably installed inside the operating table 2 .

[0026] When installing the swash plate 4, the swash plate 4 can be preliminarily positioned by sleeve-fitting the swash plate 4 on the outer wall of the positioning shaft 10. There is no need for a clamping component to support the swash plate for auxiliary fixing, which makes it easier to fix the swash plate with the clamping component and perform subsequent operations, thereby improving the convenience of equipment operation. When the swash plate 4 is installed and needs to be ground, the first gear 8 can be rotated to drive the positioning shaft 10 to move downward inside the operating table 2, so that the top end of the positioning shaft 10 is lower than the top end of the swash plate 4, thereby ensuring the flatness of the surface of the swash plate 4 and preventing the grinding structure 3 from touching the top end of the positioning shaft 10 when grinding the surface of the swash plate 4, thereby affecting the grinding effect of the device, thereby facilitating the grinding of the surface of the swash plate 4.

[0027] like Figure 5 As shown, a slider 24 is fixedly mounted on the outer wall of the positioning shaft 10 , and the slider 24 is slidably mounted inside a limiting groove 25 , and the limiting groove 25 is opened inside the operating table 2 .

[0028] When the first gear 8 rotates, the slider 24 can slide in the limiting groove 25 to limit the positioning shaft 10, so that the positioning shaft 10 can only move up and down, thereby ensuring the stability of the device operation.

[0029] like Figure 5 and Figure 6As shown, a clamping block 11 is slidably installed inside the clamping plate 5, a first spring 12 is arranged between the clamping plate 5 and the clamping block 11, and two ends of the first spring 12 are fixedly connected to the clamping plate 5 and the clamping block 11 respectively.

[0030] When the swash plate 4 is placed between the two clamping plates 5, the bottom end of the swash plate 4 contacts the surface of the clamping block 11, driving the clamping block 11 to squeeze the first spring 12 and slide inside the clamping plate 5. The elastic force of the first spring 12 can make the clamping block 11 exert low pressure on the outer wall of the swash plate 4, thereby achieving a preliminary pre-fixing effect, making it easier for the swash plate 4 to adjust its own position when the pushing component pushes the swash plate 4.

[0031] like Figure 6 As shown, a magnetic block 13 is fixedly installed inside the clamping plate 5 , and the magnetic block 13 is arranged on one side of the clamping block 11 .

[0032] The magnetic block 13 can be set as an electromagnet, and the side of the clamping block 11 close to the magnetic block 13 can be set as a magnetic material. The magnetic block 13 can be energized to make the clamping block 11 fit with the magnetic block 13. After the device grinds the swash plate 4 of the same size, the clamping block 11 and the magnetic block 13 can be directly fitted by energizing the magnetic block 13, thereby increasing the distance between the two clamping plates 5, making it easier to quickly remove the swash plate 4. After a new swash plate 4 of the same size is placed, the magnetic block 13 is de-energized to fix the swash plate 4, thereby improving the efficiency of replacing the swash plate 4 of the same size, thereby improving the grinding efficiency.

[0033] like Figure 7 As shown, the pushing assembly includes a push plate 14 arranged below the swash plate 4 , a connecting shaft 15 is arranged at the bottom end of the push plate 14 , an electric push rod 16 is fixedly mounted at the bottom end of the connecting shaft 15 , and the electric push rod 16 is installed inside the operating table 2 .

[0034] When the swash plate 4 needs to be ground, the electric push rod 16 can be started to drive the connecting shaft 15 to move upward, and the movement of the connecting shaft 15 drives the push plate 14 to move upward, so that the top end of the push plate 14 contacts the bottom end of the swash plate 4, and the push plate 14 moves upward to drive the swash plate 4 to move, so that the end surface of the swash plate 4 is as flat as possible, which is convenient for grinding and improves the grinding effect of the equipment on the swash plate 4.

[0035] like Figure 7 As shown, the push plate 14 is rotationally connected to the connecting shaft 15.

[0036] By the rotational connection between the push plate 14 and the connecting shaft 15, the push plate 14 can rotate after contacting the swash plate 4, thereby increasing the contact surface between the push plate 14 and the bottom end of the swash plate 4, thereby improving the stability between the two.

[0037] like Figure 7 and Figure 8As shown, a sliding plate 17 is hinged on one side of the push plate 14, and a second connecting plate 18 is sleeved on the outer wall of the bottom end of the sliding plate 17. The second connecting plate 18 is fixedly installed inside the operating table 2. A sliding rod 19 is installed on one side of the sliding plate 17. The sliding rod 19 is slidably installed inside the first sliding groove 20. The first sliding groove 20 is opened inside the second connecting plate 18.

[0038] When the push plate 14 moves upward, the movement of the push plate 14 drives the sliding plate 17 to slide in the inner wall of the second connecting plate 18 , and the movement of the sliding plate 17 drives the movement of the sliding rod 19 , so that the sliding rod 19 slides in the inner wall of the first sliding groove 20 .

[0039] like Figure 7 and Figure 8 As shown, the second connecting plate 18 is evenly provided with second sliding grooves 21 , and a connecting rod 23 is provided on one side of the sliding rod 19 , and the connecting rod 23 is fixedly mounted on one side of the first connecting plate 6 .

[0040] When the end surface of the swash plate 4 tends to be flat, the movement of the connecting rod 23 can push the sliding rod 19 to slide into the inside of the second sliding groove 21. The second sliding groove 21 is vertically arranged with the first sliding groove 20. The sliding rod 19 is limited by the second sliding groove 21, so that the sliding plate 17 cannot slide inside the second connecting plate 18, thereby making the push plate 14 unable to rotate, so that the swash plate 4 can remain flat when the device is grinding, thereby ensuring the stability of the swash plate 4 during grinding.

[0041] like Figure 8 As shown, a second spring 22 is disposed inside the sliding plate 17 , and two ends of the second spring 22 are fixedly connected to the sliding plate 17 and the sliding rod 19 , respectively.

[0042] When the clamping assembly clamps the swash plate 4 inward and fixes it, the connecting rod 23 pushes the slide bar 19 to move, and the slide bar 19 squeezes the second spring 22, causing the second spring 22 to deform and store elastic potential energy. When the clamping assembly releases the swash plate 4, the connecting rod 23 no longer applies force to the slide bar 19, and the second spring 22 releases its elastic potential energy, pushing the slide bar 19, causing the slide bar 19 to slide out of the second slide groove 21 and slide into the first slide groove 20. The slide bar 19 is reset, so that the sliding plate 17 can slide in the second connecting plate 18, and the rotation angle of the push plate 14 can be adjusted.

[0043] Working principle and usage process: When the device is needed to grind the swash plate 4 of the travel motor, firstly, the mounting hole in the middle of the swash plate 4 is sleeved on the outer wall of the positioning shaft 10, and the thin surface of the swash plate 4 is placed on the top of the push plate 14. After the swash plate 4 is placed, the electric push rod 16 is started, so that the connecting shaft 15 drives the push plate 14 to move upward, and the push plate 14 contacts the bottom end of the swash plate 4 and rotates. When the end surface of the swash plate 4 is flat, the electric push rod 16 is closed; Then, the motor is started by an external power supply. The start of the motor drives the second gear 9 to rotate. The rotation of the second gear 9 drives the rotation of the first gear 8. The rotation of the first gear 8 drives the rack plate 7 to move. The movement of the rack plate 7 drives the first connecting plate 6 and the clamping plate 5 to move, so that the two clamping plates 5 move toward the direction of the swash plate 4 to clamp the swash plate 4. At the same time, the rotation of the first gear 8 drives the sliding of the positioning shaft 10, so that the top end of the positioning shaft 10 slides under the end face of the swash plate 4. Finally, the surface of the swash plate 4 is ground by the grinding structure 3.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency grinding device for a travel motor swash plate, comprising a grinding device body (1), characterized in that: An operating table (2) is fixedly mounted on one side of the grinding device body (1); a grinding structure (3) is mounted on the bottom end of the grinding device body (1); a swash plate (4) is arranged below the grinding structure (3); the swash plate (4) is arranged at the top of the operating table (2); clamping components are arranged on both sides of the swash plate (4); and a pushing component is arranged below the swash plate (4); The clamping assembly comprises clamping plates (5) arranged on both sides of the swash plate (4), the bottom ends of the two clamping plates (5) are fixedly connected to a first connecting plate (6), the ends of the two first connecting plates (6) away from the clamping plates (5) are fixedly mounted with a rack plate (7), a first gear (8) is meshedly connected between the two rack plates (7), one side of the first gear (8) is meshedly connected to a second gear (9), and the second gear (9) is rotatably mounted inside the operating table (2).

2. The high-efficiency grinding device for the swash plate of a travel motor according to claim 1, characterized in that: The first gear (8) is internally threadedly connected to a positioning shaft (10), and the positioning shaft (10) is slidably mounted inside the operating table (2).

3. The high-efficiency grinding device for the swash plate of a travel motor according to claim 2, characterized in that: A sliding block (24) is fixedly mounted on the outer wall of the positioning shaft (10), and the sliding block (24) is slidably mounted inside a limiting groove (25), and the limiting groove (25) is provided inside the operating table (2).

4. The high-efficiency grinding device for the swash plate of a travel motor according to claim 1, characterized in that: A clamping block (11) is slidably mounted inside the clamping plate (5), a first spring (12) is arranged between the clamping plate (5) and the clamping block (11), and two ends of the first spring (12) are respectively fixedly connected to the clamping plate (5) and the clamping block (11).

5. The high-efficiency grinding device for the swash plate of a travel motor according to claim 1 is characterized in that: A magnetic block (13) is fixedly mounted inside the clamping plate (5), and the magnetic block (13) is arranged on one side of the clamping block (11).

6. The high-efficiency grinding device for the swash plate of a travel motor according to claim 1, characterized in that: The pushing assembly comprises a push plate (14) arranged below the swash plate (4); a connecting shaft (15) is arranged at the bottom end of the push plate (14); an electric push rod (16) is fixedly mounted at the bottom end of the connecting shaft (15); and the electric push rod (16) is mounted inside the operating table (2).

7. The high-efficiency grinding device for the swash plate of a travel motor according to claim 6, characterized in that: The push plate (14) is rotationally connected to the connecting shaft (15).

8. The high-efficiency grinding device for the swash plate of a travel motor according to claim 6, characterized in that: A sliding plate (17) is hingedly connected to one side of the push plate (14); a second connecting plate (18) is sleeved on the outer wall of the bottom end of the sliding plate (17); the second connecting plate (18) is fixedly installed inside the operating table (2); a sliding rod (19) is installed on one side of the sliding plate (17); the sliding rod (19) is slidably installed inside a first sliding groove (20); and the first sliding groove (20) is opened inside the second connecting plate (18).

9. The high-efficiency grinding device for the swash plate of a travel motor according to claim 8, characterized in that: The second connecting plate (18) is evenly provided with second sliding grooves (21) inside, and a connecting rod (23) is provided on one side of the sliding rod (19), and the connecting rod (23) is fixedly mounted on one side of the first connecting plate (6).

10. The high-efficiency grinding device for the swash plate of a travel motor according to claim 8, characterized in that: A second spring (22) is disposed inside the sliding plate (17), and two ends of the second spring (22) are fixedly connected to the sliding plate (17) and the sliding rod (19) respectively.

Images