Hydraulic type self-compensation annular furnace driving mechanism

Abstract

The utility model relates to a hydraulic type self-compensating annular furnace driving mechanism which comprises a base, a sliding plate assembly installed on the base, a driving device, a chaining seat, a cogwheel installed at the top of the driving device, a hydraulic oil cylinder installed on one side of the base and a compensating assembly installed on the cogwheel, wherein the driving device and the chaining seat are installed on the sliding plate assembly. The rod end of the hydraulic oil cylinder is mounted on the linking seat; the cogwheel is meshed with pin teeth mounted on an annular furnace pin tooth holder, and the side wall of the outer circle of the pin tooth holder is attached to the outer side face of the compensation assembly; an oil rod of the hydraulic oil cylinder stretches out and draws back to drive the sliding plate to slide through the linkage base, the sliding plate drives the motor installation base and the hydraulic motor to move, error gaps generated when the pin teeth and the cogwheel are meshed are automatically compensated, and the annular compensation pressing plate and the pin tooth base are attached and automatically adjusted to enable the cogwheel and the pin teeth to be meshed all the time. And continuous and reliable operation of a thermotechnical production line is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of hydraulic self-compensation ring furnace driving mechanism, belong to the mechanical transmission field of heat treatment equipment. BACKGROUND

[0002] Annular heating furnace (ring furnace) is mainly used in heating link before forging press, and it is one of the furnace types of forging furnace of heat treatment equipment, mainly matched with precision forging machine or other forging machine to complete the heating process before forging, with the advantages of large output, high thermal efficiency, high automation degree, is the main way of large-scale production and improving steel output.

[0003] The continuous, stable and accurate operation of the ring furnace is directly related to the automatic and accurate material taking of the mechanical hand in the next process, and the mechanical transmission mode and structure of the furnace bottom driving mechanism are guaranteed. The furnace bottom driving mechanism of the ring furnace equipment usually adopts pin-tooth transmission. However, the diameter of the ring furnace is usually very large, even the diameter of the small ring furnace is 4-5m long, and the diameter of the large ring furnace is 24m or even larger. The machining and assembly error of the lower ring device where the pin-tooth is located is very large. If the fixed center distance assembly method is used, the circumferential error of the ring furnace after one rotation is very large, and it is difficult to ensure the correct engagement of the pin-tooth and the blunt gear at each moment.

[0004] The Chinese utility model application with publication number CN104359311A discloses a ring furnace driving mechanism, which comprises a base, a sliding groove is arranged on the base, a sliding seat is slidably connected to the sliding groove, a motor base and a reducer base are fixed on the sliding seat, a driving motor is fixed on the motor base, the output end of the driving motor is connected to the input end of the reducer through a shaft coupling, and the output end of the reducer is connected to a blunt gear. A push cylinder base is arranged on one side of the base, a push cylinder is fixed on the push cylinder base, and the piston rod of the push cylinder is connected to a support fixed on the sliding seat. The above technical solution completes the opening and closing action of the blunt gear and the pin-tooth of the ring furnace, which is not suitable for large ring furnaces. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of providing a hydraulic self-compensation ring furnace driving mechanism that automatically compensates for the error gap when the pin-tooth and the blunt gear engage, eliminates the problem of the furnace bottom rotating jerkily, with poor precision and discontinuity caused by the fact that the pitch circle of the blunt gear and the pitch circle of the pin-tooth are not tangent at each moment due to machining and assembly errors during the rotation of the furnace bottom, and provides a guarantee for the continuous and reliable operation of the heat treatment production line.

[0006] The utility model adopts the following technical solutions:

[0007] This utility model relates to a hydraulic self-compensating annular furnace drive mechanism, which includes a base, a sliding plate assembly mounted on the base, a drive device and a connecting seat mounted on the sliding plate assembly, a blunt gear mounted on the top of the drive device, a hydraulic cylinder mounted on one side of the base, and a compensation component mounted on the blunt gear. The rod end of the hydraulic cylinder is mounted on the connecting seat. The blunt gear meshes with a pin tooth mounted on a pin tooth seat of the annular furnace, and the outer circular sidewall of the pin tooth seat is in contact with the outer side of the compensation component.

[0008] The present invention includes an annular compensation pressure plate nested on the top boss of a blunt gear and a compensation pressure plate fixing plate installed on the inner side wall groove of the annular compensation pressure plate. The compensation pressure plate fixing plate is fixed to the top of the blunt gear. The outer side wall of the annular compensation pressure plate fits against the outer circle of the pin seat. The sliding plate assembly moves to make the annular compensation pressure plate and the pin seat fit together.

[0009] This utility model skateboard assembly includes an L-shaped slider support, a slider pressure plate, a slide plate, an upper slider, and a lower slider; there are four L-shaped slider supports, four slide plates, four upper sliders, and four lower sliders; the base has a rectangular cross-section, and support blocks are installed on the bottom walls of the two long sides of the base cavity; a groove is provided on one side of the bottom of the slider pressure plate, and the upper slider is installed in the groove, with the friction surface of the upper slider located on the outside of the groove; the other side of the bottom of the slider pressure plate is fixedly installed on the top of the side wall of the base; two slider pressure plates are fixedly installed at intervals on each long side wall of the base; two adjacent slider pressure plates on both sides are symmetrically arranged; the four L-shaped slider supports are spaced apart. The L-shaped slider support is installed on the top surface of the support block, with each L-shaped slider support corresponding to a slider pressure plate. The top of the L-shaped slider support is fixedly connected to the corresponding slider pressure plate. The lower slider is installed on the inner protrusion of the L-shaped slider support. The lower slider has a triangular cross-section and its friction surface is a downward slope. The bottom surfaces of the long sides of the slide plate are upward slopes that match the friction surface of the lower slider. The slide plate is slidably positioned between the friction surfaces of the upper and lower sliders. The right end of the slide plate is positioned outside the upper slider on the right side. The slide plate slides left and right between the upper and lower sliders. When the slide plate slides to the left, the right end of the slide plate does not exceed the right end of the upper slider on the right side.

[0010] The driving device of this utility model includes a cylindrical motor mounting base fixedly installed on the top surface of the slide plate, a connecting flange fixedly installed on the top of the motor mounting base, a hydraulic motor disposed in the motor mounting base, and a rotary reducer installed on the transmission shaft of the hydraulic motor. The rotary reducer is fixedly installed on the connecting flange; the blunt gear is installed on the output shaft of the rotary reducer; and the connecting seat is fixedly installed on the right side of the top surface of the slide plate.

[0011] This utility model has a hydraulic cylinder support installed on the top surface of one side of the base, and a bearing installed on the hydraulic cylinder support. The mounting shaft on the cylinder body of the hydraulic cylinder is fitted onto the bearing, and the hydraulic cylinder swings slightly during operation.

[0012] The upper slider of this utility model is U-shaped, with an oil injection hole A in the middle and an X-shaped groove A on the friction surface of the upper slider, the oil injection hole A communicating with the X-shaped groove A; an X-shaped groove B is provided on the friction surface of the lower slider, and L-shaped oil injection holes are provided along the transverse and longitudinal directions of the lower slider, the oil inlet of the L-shaped oil injection hole is located on the end face of the lower slider, and the oil outlet of the L-shaped oil injection hole is connected with the X-shaped groove B; an oil injection hole C is provided inside the slider pressure plate, the oil outlet of the oil injection hole C is located on one end side, the oil outlet of the oil injection hole C is connected with the groove and corresponds to the oil injection hole A.

[0013] The model number of the hydraulic motor of this utility model is GM1-200.

[0014] The model number of the rotary reducer of this utility model is: GFB36T3.

[0015] The positive effects of this utility model are as follows: This utility model installs an annular compensating pressure plate on the top of the blunt gear. The hydraulic cylinder's rod extends and retracts, driving the sliding plate through the connecting seat. The sliding plate then moves the motor mounting seat and the hydraulic motor, automatically compensating for the error gap when the pin and blunt gear mesh. This eliminates the problems of jerking, poor precision, and discontinuity in the rotation of the furnace bottom caused by the non-tangency of the pitch circles of the blunt gear and pin during meshing due to machining and assembly errors. The annular compensating pressure plate and pin seat are automatically adjusted to ensure that the blunt gear and pin always maintain meshing; thus guaranteeing the continuous and reliable operation of the thermal production line.

[0016] The drive device of this utility model adopts the form of a hydraulic motor reducer, which can realize stepless continuous speed regulation of rotation, adapting to the speed requirements of the ring furnace rotation. Moreover, the speed regulation of the hydraulic motor is adjusted by a proportional valve, making the start and stop of the ring furnace bottom rotation smoother.

[0017] The rodless chamber of the hydraulic cylinder of this utility model relies on the accumulator to replenish or unload oil to automatically compensate for the meshing gap between the blunt gear and the pin tooth installed on the pin tooth seat of the annular furnace. Furthermore, the sliding plate assembly can pull the hydraulic motor and the blunt gear to the right as a whole, so that the pin tooth and the blunt gear are completely disengaged, thus fulfilling the requirements for maintenance of the drive device or the lower ring of the annular furnace. Attached Figure Description

[0018] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Appendix Figure 2 This is a cross-sectional view of the skateboard assembly of this utility model;

[0020] Appendix Figure 3 This is a top view of the base structure of this utility model;

[0021] Appendix Figure 4 This is a cross-sectional view of the slider pressure plate of this utility model;

[0022] Appendix Figure 5 This is a partial cross-sectional view of the upper slider structure of this utility model;

[0023] Appendix Figure 6 This is a schematic diagram of the X-shaped groove A structure of the upper slider of this utility model;

[0024] Appendix Figure 7 This is a partial cross-sectional view of the lower slider of this utility model;

[0025] Appendix Figure 8 This is a side view of the sliding block structure of this utility model. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings. In the description of the present invention, the left and right sides are referred to as the accompanying drawings. Figure 1 Or attached Figure 2 The location or sliding direction of the sliding plate 11 is only for the purpose of describing this utility model, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0027] Example 1:

[0028] As attached Figures 1-3 As shown, this utility model includes a base 1, a sliding plate assembly mounted on the base 1, a drive device and a connecting seat 6 mounted on the sliding plate assembly, a blunt gear 2 mounted on the top of the drive device, a hydraulic cylinder 3 mounted on one side of the base 1, and a compensation component mounted on the blunt gear 2; the rod end of the hydraulic cylinder 3 is mounted on the connecting seat 6; foundation damping plates 111 are installed at intervals at the bottom of the base 1, and the foundation damping plates 111 are pre-embedded in concrete to resist the driving reaction force. The blunt gear 2 meshes with the pin teeth 5 mounted on the pin tooth seat 4 of the annular furnace, and the outer circle of the pin tooth seat 4 is in contact with the outer side of the compensation component. A hydraulic cylinder support 17 is installed on the top surface of one side of the base 1, and a support bearing 18 is installed on the hydraulic cylinder support 17. A shaft sleeve is installed on the upper side of the cylinder body of the hydraulic cylinder 3 and mounted on the bearing 18. During operation, the hydraulic cylinder 3 can swing slightly, which can correct the unfavorable force on the hydraulic cylinder caused by rigid assembly errors.

[0029] As attached Figure 1 As shown, the compensation assembly of this utility model includes an annular compensation pressure plate 7 nested on the top boss of the blunt gear 2 and a compensation pressure plate fixing plate 8 installed on the groove of the inner side wall of the annular compensation pressure plate 7. The compensation pressure plate fixing plate 8 is fixed to the top of the blunt gear 2. The outer side wall of the annular compensation pressure plate 7 fits against the outer circle of the pin tooth seat 4. The sliding plate assembly moves to make the annular compensation pressure plate 7 and the pin tooth seat 4 fit together, ensuring that the pin tooth 5 and the blunt gear 2 always maintain accurate meshing.

[0030] As attachedFigure 2 As shown, the slide assembly of this utility model includes an L-shaped slider support 9, a slider pressure plate 10, a slide plate 11, an upper slider 12, and a lower slider 13; there are four L-shaped slider supports 9, slide plates 11, upper sliders 12, and lower sliders 13.

[0031] The base 1 has a rectangular cross-section. Support blocks 19 are installed on the bottom walls of the two long sides of the inner cavity of the base 1. A groove 21 is provided on one side of the bottom of the slider pressure plate 10. The upper slider 12 is installed in the groove 21. The friction surface of the upper slider 12 is provided on the outside of the groove 21. The other side of the bottom of the slider pressure plate 10 is fixedly installed on the top of the side wall of the base 1. Two slider pressure plates 10 are fixedly installed at intervals on each long side wall of the base 1. Two adjacent slider pressure plates 10 on both sides are symmetrically arranged.

[0032] Four L-shaped slider supports 9 are installed at intervals on the top surface of the support block 19. Each L-shaped slider support 9 corresponds to a slider pressure plate 10, and the top of the L-shaped slider support 9 is fixedly connected to the corresponding slider pressure plate 10.

[0033] The lower slider 13 is mounted on the inner protrusion of the L-shaped slider support 9. The lower slider 13 has a triangular cross-section and its friction surface is a downward slope. The bottom surfaces of the long sides of the slide plate 11 are upward slopes that match the friction surface of the lower slider 13. The slide plate 11 is slidably disposed between the friction surfaces of the upper slider 12 and the lower slider 13. The right end of the slide plate 11 is disposed outside the upper slider 12 on the right side. The slide plate 11 slides left and right between the upper slider 12 and the lower slider 13. According to the stroke of the slide plate 11, when the slide plate 11 slides to the left, the right end of the slide plate 11 does not exceed the right end of the upper slider on the right side.

[0034] As attached Figure 2 , 3 As shown, the driving device of this utility model includes a cylindrical motor mounting base 14 fixedly installed on the top surface of the slide plate 11, a connecting flange 15 fixedly installed on the top of the motor mounting base 14, a hydraulic motor 16 disposed inside the motor mounting base 14, and a rotary reducer 20 installed on the transmission shaft of the hydraulic motor 16. The rotary reducer 20 is fixedly installed on the connecting flange 15, and the output shaft of the rotary reducer 20 is vertically arranged. The blunt gear 2 is installed on the output shaft of the rotary reducer 20. The connecting seat 6 is fixedly installed on the right side of the top surface of the slide plate 11. The model of the hydraulic motor 16 is GM1-200. The model of the rotary reducer 20 is GFB36T3. The inner cavity of the slide plate 11 is a rectangular hole, and a circular hole communicating with the rectangular hole is provided on the top surface of the slide plate 11 to facilitate the lower part of the hydraulic motor 16 passing through the top surface of the slide plate 11 and abutting against the base 1 to support the hydraulic motor mounting base 14.

[0035] Example 2:

[0036] Based on Example 1, as shown in the appendixFigure 5 , 6 As shown, the upper slider 12 of this utility model is U-shaped, with an oil injection hole A121 provided in the middle of the upper slider 12, and an X-shaped groove A122 provided on the friction surface of the upper slider 12. The oil injection hole A121 and the X-shaped groove A122 are connected.

[0037] As attached Figure 7 , 8 As shown, this utility model provides an X-shaped groove B131 on the friction surface of the lower slider 13, and L-shaped oil injection holes 132 are provided along the transverse and longitudinal directions of the lower slider 13. The oil inlet of the L-shaped oil injection hole 132 is located on the end face of the lower slider 13, and the oil outlet of the L-shaped oil injection hole 132 is connected to the X-shaped groove B131. Lubricating oil enters through the oil outlet of the L-shaped oil injection hole 132 and fills the X-shaped groove B131 to lubricate the friction surface of the lower slider 13.

[0038] As attached Figure 4 As shown, this utility model provides an oil injection hole C101 in the slider pressure plate 10. The oil outlet of the oil injection hole C101 is located on one side. The oil outlet of the oil injection hole C101 is connected to the groove 21 and corresponds to the oil injection hole A121, so that lubricating oil is injected into the oil injection hole A121. Through the oil hole A121, the lubricating oil enters the X-shaped groove A122 and fills it, so as to lubricate the friction surface of the upper slider 12.

[0039] The slide plate 11 slides left and right between the friction surfaces of the upper slide plate 12 and the lower slide plate 13.

[0040] Example 3:

[0041] As attached Figure 1 As shown, the hydraulic cylinder 3 of this utility model is connected to a hydraulic system, which includes a hydraulic station 31, an accumulator 32 installed on one side of the hydraulic station 31, a motor pump group 33 and a control valve group 34 installed at intervals on the top surface of the hydraulic station 31, and high and low pressure switches 35. The oil pipe 36 of the hydraulic station is connected to the oil port of the hydraulic cylinder 3. The accumulator 32 is installed on one side of the hydraulic station 31 by a clamp, and the working oil pipe of the accumulator 32 is connected to the corresponding oil port of the control valve group 34. The control valve group is mounted on the hydraulic station, and the control valve and the high and low pressure switches are installed on it. The control valve group 34 has interface A and interface B on its side, and interface A and interface B are respectively connected to port a and port b of the hydraulic cylinder 3. The motor pump group 33 is vertically installed on the hydraulic station, and its hydraulic pump is installed below the motor by a flange and immersed in the hydraulic oil in the hydraulic station.

[0042] As attached Figures 1-8As shown, the overall working process of this utility model is as follows: the output shaft of the hydraulic motor 16 drives the blunt gear 2 to rotate, and the blunt gear 2 moves the pin tooth 5 to make the bottom of the ring furnace rotate. During the meshing transmission between the blunt gear 2 and the pin tooth 5, the slide plate 11 always remains in a sliding state, so that the outer wall of the ring compensation pressure plate 7 and the outer circle of the pin tooth seat 4 are tightly fitted, thereby ensuring the correct meshing dimensions.

[0043] If the pin pitch circle diameter error is positive at the moment of engagement, the outer circle of the pin seat 4 will push the outer wall of the annular compensating pressure plate 7, pushing the hydraulic motor 16 to make the motor mounting seat 14 drive the slide plate 11 to slide to the right, and the oil rod of the hydraulic cylinder 3 will retract to the right, so that the blunt gear 2 meshes with the pin 5, and the hydraulic oil in the rodless chamber will be filled into the accumulator, but always maintain positive pressure to ensure the tight fit between the outer wall of the annular compensating pressure plate 7 and the pin seat 4.

[0044] If the pin pitch circle diameter error is negative at the moment of engagement, the hydraulic cylinder 3 rod extends to the left and drives the slide plate 11 to slide to the left through the connecting seat 6. The slide plate 11 drives the motor mounting seat 14 and the hydraulic motor 16 to move to the left. Then the outer wall of the annular compensating pressure plate 7 pushes against the outer circle of the pin seat 4, so that the blunt gear 2 meshes with the pin tooth 5. At this time, the rodless cylinder hydraulic oil is charged through the accumulator, but always maintains positive pressure to ensure the tight fit between the pin seat and the compensating pressure plate.

[0045] During the rotation of the ring furnace at the furnace bottom, the hydraulic cylinder rod extends and retracts, automatically adjusting to keep the blunt gear 2 and the pin tooth 5 engaged.

[0046] When the hydraulic system is working, if the pressure inside the accumulator 32 is lower than the pressure set by the low-pressure switch, the motor pump unit starts and pressurizes the accumulator 32. When the pressure reaches the pressure set by the high-pressure switch, the motor pump unit 33 is de-energized and stops running. This intermittent action means that the motor pump unit 33 is in a de-energized state for a long time in one cycle, which can reduce the running time of the motor pump unit. The thrust is mainly maintained by the pressure in the accumulator 32, resulting in significant energy saving.

[0047] This invention features an annular compensating pressure plate installed on the top of the blunt gear 27. The hydraulic cylinder 3 extends and retracts, driving the sliding plate 11 to slide via the connecting seat 6. The sliding plate 11 then moves the motor mounting seat 14 and the hydraulic motor 16, automatically compensating for the error gap when the pin tooth 5 and the blunt gear 2 mesh. This eliminates the jerking, inaccuracy, and discontinuity in the rotation of the furnace bottom caused by the non-tangency of the pitch circles of the blunt gear and the pin tooth during meshing due to machining and assembly errors. The annular compensating pressure plate 7 and the pin tooth seat 4 are automatically adjusted to ensure that the blunt gear 2 and the pin tooth 5 always maintain meshing, thus guaranteeing the continuous and reliable operation of the thermal production line.

Claims

1. A hydraulic self-compensating ring furnace drive mechanism, characterized in that, It includes a base (1), a slide assembly mounted on the base (1), a drive unit and a connecting seat (6) mounted on the slide assembly, a blunt gear (2) mounted on the top of the drive unit, a hydraulic cylinder (3) mounted on one side of the base (1), and a compensation assembly mounted on the blunt gear (2); the rod end of the hydraulic cylinder (3) is mounted on the connecting seat (6); The blunt gear (2) meshes with the pin (5) mounted on the pin seat (4) of the annular furnace, and the outer side wall of the pin seat (4) is in contact with the outer side of the compensation component.

2. The hydraulic self-compensating ring furnace drive mechanism according to claim 1, characterized in that, The compensation assembly includes an annular compensation plate (7) nested on the top boss of the blunt gear (2) and a compensation plate fixing plate (8) installed on the inner side wall groove of the annular compensation plate (7), wherein the compensation plate fixing plate (8) is fixed to the top of the blunt gear (2). The outer wall of the annular compensating pressure plate (7) is in contact with the outer circle of the pin tooth seat (4), and the sliding plate assembly moves to make the annular compensating pressure plate (7) and the pin tooth seat (4) fit together.

3. The hydraulic self-compensating ring furnace drive mechanism according to claim 1, characterized in that, The slide assembly includes an L-shaped slider support (9), a slider pressure plate (10), a slide plate (11), an upper slider (12), and a lower slider (13); there are four L-shaped slider supports (9), four slide plates (11), four upper sliders (12), and four lower sliders (13). The base (1) has a rectangular cross-section. Support blocks (19) are installed on the bottom walls of the two long sides of the inner cavity of the base (1). A groove (21) is provided on one side of the bottom of the slider pressure plate (10). The upper slider (12) is installed in the groove (21). The friction surface of the upper slider (12) is located on the outside of the groove (21). The other side of the bottom of the slider pressure plate (10) is fixedly installed on the top of the side wall of the base (1). Two slider pressure plates (10) are fixedly installed at intervals on each long side wall of the base (1). Two adjacent slider pressure plates (10) on both sides are symmetrically arranged. Four L-shaped slider supports (9) are installed at intervals on the top surface of the support block (19). Each L-shaped slider support (9) corresponds to a slider pressure plate (10), and the top of the L-shaped slider support (9) is fixedly connected to the corresponding slider pressure plate (10). The lower slider (13) is installed on the inner protrusion of the L-shaped slider support (9). The lower slider (13) has a triangular cross section and its friction surface is a lower inclined surface. The bottom surfaces of the long sides of the slide plate (11) are upper inclined surfaces that match the friction surface of the lower slider (13). The slide plate (11) is slidably disposed between the friction surface of the upper slider (12) and the friction surface of the lower slider (13). The right end of the slide plate (11) is disposed on the outside of the upper slider (12) on the right side. The slide plate (11) slides left and right between the upper slider (12) and the lower slider (13). When the slide plate (11) slides to the left, the right end of the slide plate (11) does not exceed the right end of the upper slider located on the right side.

4. The hydraulic self-compensating ring furnace drive mechanism according to claim 3, characterized in that, The drive device includes a cylindrical motor mounting base (14) fixedly mounted on the top surface of the slide plate (11), a connecting flange (15) fixedly mounted on the top of the motor mounting base (14), a hydraulic motor (16) disposed in the motor mounting base (14), and a rotary reducer (20) mounted on the transmission shaft of the hydraulic motor (16). The rotary reducer (20) is fixedly mounted on the connecting flange (15); the blunt gear (2) is mounted on the output shaft of the rotary reducer (20). The connecting seat (6) is fixedly installed on the right side of the top surface of the slide plate (11).

5. The hydraulic self-compensating ring furnace drive mechanism according to claim 3, characterized in that, A hydraulic cylinder support (17) is installed on the top surface of one side of the base (1), and a bearing (18) is installed on the hydraulic cylinder support (17). The mounting shaft on the cylinder body of the hydraulic cylinder (3) is mounted on the bearing (18), and the hydraulic cylinder (3) swings slightly during operation.

6. The hydraulic self-compensating ring furnace drive mechanism according to claim 3, characterized in that, The upper slider (12) is U-shaped, with an oil injection hole A (121) in the middle of the upper slider (12) and an X-shaped groove A (122) on the friction surface of the upper slider (12). The oil injection hole A (121) and the X-shaped groove A (122) are connected. An X-shaped groove B (131) is provided on the friction surface of the lower slider (13), and an L-shaped oil injection hole (132) is provided in the transverse and longitudinal directions of the lower slider (13). The oil inlet of the L-shaped oil injection hole (132) is provided on the end face of the lower slider (13), and the oil outlet of the L-shaped oil injection hole (132) is connected to the X-shaped groove B (131). An oil injection hole C (101) is provided in the slider pressure plate (10). The oil outlet of the oil injection hole C (101) is located on one side. The oil outlet of the oil injection hole C (101) is connected to the groove (21) and corresponds to the oil injection hole A (121).

7. The hydraulic self-compensating ring furnace drive mechanism according to claim 4, characterized in that, The hydraulic motor (16) is model number GM1-200.

8. The hydraulic self-compensating ring furnace drive mechanism according to claim 4, characterized in that, The model of the rotary reducer (20) is: GFB36T3.

Images