Pressure-bearing device of servo hydraulic cylinder

Abstract

The utility model discloses a servo hydraulic cylinder pressure-bearing device which comprises a connecting cylinder barrel and a piston connecting rod arranged in the middle of the connecting cylinder barrel. A telescopic body is arranged at the position, connected with the inner side wall face of the cylinder barrel, of the left end of the piston connecting rod, an insertion outer guide column is arranged in the telescopic body, a built-in buffering reset spring is arranged in the middle of the insertion outer guide column, and an insertion inner guide column is arranged at the tail end of the built-in buffering reset spring. A cylinder barrel wall inner chamber is formed in the position, located in the left end connecting cylinder barrel wall face, of the left side face of the telescopic body, air in the cylinder barrel wall inner chamber can be repeatedly exchanged through repeated reset compression of the telescopic body, and heat of the connecting cylinder barrel can be dissipated through repeated exchange of the air; therefore, heat exchange and heat dissipation can be effectively accelerated, the load danger caused by too high internal heat is reduced, and the use practicability of the servo hydraulic cylinder pressure-bearing device is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to a servo hydraulic cylinder pressure bearing device, and in particular relates to a servo hydraulic cylinder pressure bearing device. Background Art

[0002] The servo hydraulic cylinder pressure-bearing device is a device used to withstand the reaction force generated by the hydraulic cylinder during its operation. The main function of this device is to transfer the reaction force generated by the hydraulic cylinder to other parts when the hydraulic cylinder is working, thereby ensuring the normal operation of the hydraulic cylinder.

[0003] The structure of the servo hydraulic cylinder pressure device mainly includes sleeves, pressure pads and tightening components. The top of the sleeve is fixedly connected to the rolling mill stand, and the bottom is detachably connected to the cylinder body of the hydraulic cylinder. The pressure pad is arranged on the outside of the sleeve, and its bottom is in contact with the top surface of the cylinder body. A tightening component is installed on the top to tighten the pressure pad downward. This design enables the pressure pad to better bear the reaction force generated by the hydraulic cylinder during operation under the action of the tightening component, effectively protect the sleeve and prevent it from deformation, thereby greatly improving the service life of the pressure device and reducing the cost of maintenance and replacement.

[0004] In general, the servo hydraulic cylinder pressure-bearing device is an indispensable part of the hydraulic cylinder system. Its design and use play an important role in ensuring the normal operation of the hydraulic cylinder and extending its service life.

[0005] However, a large amount of heat will be generated inside the pressure-bearing device of the servo hydraulic cylinder when it is repeatedly driven. The excessive heat will load the servo hydraulic cylinder and reduce its service life.

[0006] The utility model improves the above-mentioned problem and specifically relates to a servo hydraulic cylinder pressure bearing device which is convenient for cooling. Utility Model Content

[0007] The purpose of the utility model is to provide a servo hydraulic cylinder pressure bearing device to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a servo hydraulic cylinder pressure-bearing device, comprising a connecting cylinder and a piston connecting rod arranged at the middle position of the connecting cylinder;

[0009] A telescopic body is provided at the position where the left end of the piston connecting rod is connected to the inner wall of the cylinder, an insertable outer guide column is provided at the internal position of the telescopic body, a built-in buffer return spring is provided at the middle position of the insertable outer guide column, and an insertable inner guide column is provided at the end position of the built-in buffer return spring. A cylinder wall inner chamber is provided on the left side of the telescopic body and at the middle position where the left end is connected to the cylinder wall. The end of the cylinder wall inner chamber is communicated with the external environment. The telescopic body will be compressed when squeezed, and will be reset due to the elastic potential energy of the built-in buffer return spring when the squeezing force is lost. At the same time, the repeated reset and compression will cause the air inside the cylinder wall inner chamber to be repeatedly exchanged.

[0010] Preferably, the telescopic body is a telescopic structure, a through hole is provided at the middle position of the telescopic body, and the piston connecting rod passes through the through hole provided at the middle position of the telescopic body.

[0011] Preferably, the end of the plug-in outer guide column is connected to the inner side surface of the left end of the telescopic body, and a cylindrical groove is provided at the middle position thereof. The plug-in inner guide column is connected to the inner side surface of the right end of the telescopic body, and the plug-in inner guide column is connected to the plug-in outer guide column by plugging.

[0012] Preferably, an external shock-absorbing buffer pad is provided at an external position of the connecting cylinder, and the external shock-absorbing buffer pad is located on the side of the external shock-absorbing buffer pad in a surrounding manner.

[0013] Preferably, a connecting piston is provided at the end position of the piston connecting rod, and the connecting piston is connected by screws passing through the piston connecting rod after being sleeved.

[0014] Preferably, a hydraulic cylinder cover is provided at a side position of the connecting cylinder barrel, and the hydraulic cylinder cover is installed and connected to the connecting cylinder barrel by means of a tack and screws.

[0015] Preferably, a hydraulic cylinder gland is provided at the left end of the hydraulic cylinder cover, and the hydraulic cylinder gland is connected to the hydraulic cylinder cover by plugging and fixing with screws.

[0016] Preferably, a built-in sealing ring is provided on the right side surface of the hydraulic cylinder cover and in the middle position of the hydraulic cylinder cover, and the outer side surface of the built-in sealing ring is connected to the hydraulic cylinder cover by adhesive.

[0017] Compared with the prior art, the utility model provides a servo hydraulic cylinder pressure bearing device, which has the following beneficial effects:

[0018] 1. In the servo hydraulic cylinder pressure-bearing device, a telescopic body is arranged at the position where the left end of the piston connecting rod is connected to the inner wall of the cylinder, an inserting outer guide column is arranged at the internal position of the telescopic body, a built-in buffer return spring is arranged at the middle position of the inserting outer guide column, and a plug-in inner guide column is arranged at the end position of the built-in buffer return spring. A cylinder wall inner chamber is arranged on the left side of the telescopic body and at the middle position where the left end is connected to the cylinder wall. The end of the cylinder wall inner chamber is connected to the external environment. The telescopic body will be compressed when squeezed, and will be reset due to the elastic potential energy of the built-in buffer return spring when the squeezing force is lost. At the same time, the repeated reset and compression will cause the air inside the cylinder wall inner chamber to be repeatedly exchanged. The repeated exchange of air will dissipate the heat of the connected cylinder, thereby effectively accelerating the heat exchange and heat dissipation and reducing the load risk caused by excessive internal heat, thereby effectively improving the practicality of the servo hydraulic cylinder pressure-bearing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the servo hydraulic cylinder pressure-bearing device of the utility model.

[0020] Figure 2 It is an enlarged structural diagram of the telescopic body of the servo hydraulic cylinder pressure-bearing device of the utility model.

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the telescopic body of the servo hydraulic cylinder pressure-bearing device of the utility model.

[0022] In the figure: 1. Hydraulic cylinder head; 2. Hydraulic cylinder pressure cover; 3. Piston connecting rod; 4. Connecting piston; 5. Connecting cylinder; 6. External shock-absorbing cushion; 7. Internal sealing ring; 8. Telescopic body; 9. Inner chamber of cylinder wall; 10. Insert inner guide column; 11. Insert outer guide column; 12. Internal buffer return spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides Figure 1-3As shown, a servo hydraulic cylinder pressure-bearing device includes a connecting cylinder 5 and a piston connecting rod 3 arranged in the middle of the connecting cylinder 5; a telescopic body 8 is arranged at the inner wall of the cylinder 5 at the left end of the piston connecting rod 3, a plug-in outer guide column 11 is arranged at the inner position of the telescopic body 8, a built-in buffer return spring 12 is arranged in the middle of the plug-in outer guide column 11, a plug-in inner guide column 10 is arranged at the end position of the built-in buffer return spring 12, and a plug-in inner guide column 10 is arranged on the left side of the telescopic body 8 and at the middle position of the wall of the cylinder 5 at the left end The inner chamber 9 of the cylinder wall, the end of the inner chamber 9 of the cylinder wall is connected to the external environment. The telescopic body 8 will be compressed when squeezed, and will be reset due to the elastic potential energy of the built-in buffer reset spring 12 when the squeezing force is lost. At the same time, its repeated reset and compression will cause the air inside the inner chamber 9 of the cylinder wall to be repeatedly exchanged. The repeated exchange of air will dissipate the heat of the connected cylinder 5, thereby effectively accelerating the heat exchange and heat dissipation to reduce the load risk caused by excessive internal heat, thereby effectively improving the practicality of the servo hydraulic cylinder pressure-bearing device.

[0025] like Figure 1 As shown, the telescopic body 8 is a telescopic structure, and a through hole is set at the middle position of the telescopic body 8. The piston connecting rod 3 passes through the through hole set at the middle position of the telescopic body 8. The middle of the telescopic body 8 allows the piston connecting rod 3 to pass through without affecting the movement of the piston connecting rod 3.

[0026] like Figure 1 As shown, the end of the plug-in outer guide column 11 is connected to the inner side surface of the left end of the telescopic body 8, and a cylindrical groove is provided at the middle position thereof. The plug-in inner guide column 10 is connected to the inner side surface of the right end of the telescopic body 8. The plug-in inner guide column 10 is connected to the plug-in outer guide column 11 by plugging. The plug-in inner guide column 10 and the plug-in outer guide column 11 play a role of limitation and guidance, thereby reducing the deformation of the built-in buffer return spring 12 due to extrusion.

[0027] like Figure 1 As shown, an external shock-absorbing buffer pad 6 is arranged at the external position of the connecting cylinder 5, and the external shock-absorbing buffer pad 6 is located on the side of the external shock-absorbing buffer pad 6 in a surrounding manner. The external shock-absorbing buffer pad 6 and the connecting cylinder 5 are main components of the servo hydraulic cylinder pressure-bearing device. The setting of the external shock-absorbing buffer pad 6 can buffer the impact of the movement of the piston connecting rod 3 and reduce the damage to the connecting cylinder 5.

[0028] like Figure 1 As shown, a connecting piston 4 is provided at the end position of the piston connecting rod 3. The connecting piston 4 is connected by screws through the piston connecting rod 3 after being sleeved. The connecting piston 4 converts the hydraulic energy provided by the hydraulic system into mechanical energy, and transmits it to the external load through the piston connecting rod 3, thereby realizing the control of the external load.

[0029] like Figure 1 As shown, a hydraulic cylinder cover 1 is arranged at the side of the connecting cylinder barrel 5, and the hydraulic cylinder cover 1 is installed and connected with the connecting cylinder barrel 5 by means of tying and screws. A hydraulic cylinder gland 2 is arranged at the left end of the hydraulic cylinder cover 1, and the hydraulic cylinder gland 2 is connected with the hydraulic cylinder cover 1 by means of plugging and fixing with screws. The main function of the hydraulic cylinder cover 1 is sealing and fixing. It not only needs to ensure that the pressure inside the hydraulic cylinder will not leak, but also needs to fix the various components in the hydraulic cylinder so that it can work normally.

[0030] like Figure 1 As shown, a built-in sealing ring 7 is provided on the right side of the hydraulic cylinder head 1 and in the middle position of the hydraulic cylinder head 1. The outer side of the built-in sealing ring 7 is connected to the hydraulic cylinder head 1 by adhesive. The built-in sealing ring 7 can enhance the sealing performance and strengthen the sealing effect.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A servo hydraulic cylinder pressure bearing device, comprising: The connecting cylinder (5) and a piston connecting rod (3) are arranged at the middle position of the connecting cylinder (5); Features: A telescopic body (8) is arranged at a position where the left end of the piston connecting rod (3) is connected to the inner wall of the cylinder (5), an insertable outer guide column (11) is arranged at an inner position of the telescopic body (8), a built-in buffer reset spring (12) is arranged at a middle position of the plug-in outer guide column (11), and a plug-in inner guide column (10) is arranged at the end position of the built-in buffer reset spring (12). A cylinder wall inner chamber (9) is arranged on the left side of the telescopic body (8) and at a position where the left end is connected to the wall of the cylinder (5), and the end of the cylinder wall inner chamber (9) is connected to the external environment. When the telescopic body (8) is squeezed, it will be compressed, and when the squeezing force is lost, it will be reset due to the elastic potential energy of the built-in buffer reset spring (12). At the same time, its repeated reset and compression will cause the air inside the cylinder wall inner chamber (9) to be repeatedly exchanged.

2. A servo hydraulic cylinder pressure bearing device according to claim 1, characterized in that: The telescopic body (8) is a telescopic structure, a through hole is provided at the middle position of the telescopic body (8), and the piston connecting rod (3) passes through the through hole provided at the middle position of the telescopic body (8).

3. The servo hydraulic cylinder pressure bearing device according to claim 1, characterized in that: The end of the plug-in outer guide column (11) is connected to the inner side surface of the left end of the telescopic body (8), and a cylindrical groove is provided at the middle position thereof. The plug-in inner guide column (10) is connected to the inner side surface of the right end of the telescopic body (8), and the plug-in inner guide column (10) is connected to the plug-in outer guide column (11) by plugging.

4. The servo hydraulic cylinder pressure bearing device according to claim 1, characterized in that: An external shock-absorbing cushion (6) is provided at an external position of the connecting cylinder (5), and the external shock-absorbing cushion (6) is located on the side of the external shock-absorbing cushion (6) in a surrounding manner.

5. The servo hydraulic cylinder pressure bearing device according to claim 1, characterized in that: A connecting piston (4) is provided at the end of the piston connecting rod (3), and the connecting piston (4) is connected to the piston connecting rod (3) by screws after being sleeved.

6. The servo hydraulic cylinder pressure bearing device according to claim 1, characterized in that: A hydraulic cylinder cover (1) is provided at a side position of the connecting cylinder barrel (5), and the hydraulic cylinder cover (1) is installed and connected to the connecting cylinder barrel (5) by means of a tack and screws.

7. A servo hydraulic cylinder pressure bearing device according to claim 6, characterized in that: A hydraulic cylinder gland (2) is provided at the left end of the hydraulic cylinder cover (1), and the hydraulic cylinder gland (2) is connected to the hydraulic cylinder cover (1) by plugging and fixing with screws.

8. The servo hydraulic cylinder pressure bearing device according to claim 7, characterized in that: A built-in sealing ring (7) is provided on the right side of the hydraulic cylinder cover (1) and at a middle position of the hydraulic cylinder cover (1), and the outer side surface of the built-in sealing ring (7) is connected to the hydraulic cylinder cover (1) by means of adhesive.

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