Screw multi-point equidistant follow-up support mechanism

Abstract

The present invention relates to a multi-point equidistant follow-up support mechanism for a screw rod applied in the technical field of screw rod transmission devices, comprising a track, a scissors-type transmission arm, a wear reversing mechanism and an intelligent supporter, wherein a transmission screw rod is installed on the load end; a plurality of anti-drooping support arms are evenly arranged above the scissors-type transmission arm along the length direction of the scissors-type transmission arm; the wear reversing mechanism comprises limiting side plates arranged on both sides of the support sleeve, a connecting rod connected in series with the tops of the two limiting side plates, and a flip driving wheel rolling with the outer ring of the support sleeve; an analysis module and a switching module are provided on the intelligent supporter, and with the above structure, when the transmission screw rod rotates, the anti-drooping support arm installed with the cross axis on the scissors-type transmission arm will be evenly expanded along the extended scissors-type transmission arm, and the plurality of anti-drooping support arms are evenly expanded in an equidistant state, thereby realizing multi-point equidistant support for the middle suspended section of the transmission screw rod, thereby reducing the problem of sagging and stress deformation of the transmission screw rod.

Description

Technical Field

[0001] The present invention relates to a support mechanism, in particular to a screw rod multi-point equidistant follow-up support mechanism applied in the technical field of screw rod transmission devices. Background Art

[0002] Screw drive is a mechanical device that converts rotational motion into linear motion. It is often used for long-distance transmission work, and its transmission distance mainly depends on the length of the screw.

[0003] The invention patent with publication number CN118548319A discloses a ball screw transmission system, including a screw, a nut and a ball. The outer peripheral surface of the screw is provided with a threaded raceway, the nut is coaxially sleeved on the screw, the ball is rollingly installed in the nut, and the ball is rollingly installed with the threaded raceway; it is provided with a push rod and a brake assembly. When the nut moves linearly to either end of the screw, the end face of the nut pushes the push rod to slide into the mounting hole, and the hydraulic oil in the mounting hole pushes the brake assembly to slide in the direction close to the screw through the hydraulic channel until the brake assembly fits into the surface of the screw and rubs against the screw, thereby achieving braking of the screw, until the screw stops, thereby completing the limiting of the nut.

[0004] The transmission distance of the lead screw mainly depends on the overall length of the lead screw. In the existing technology, when long-distance transmission is required, it is necessary to increase the lead screw diameter to reduce the problems of lead screw sagging and stress deformation. However, if the lead screw diameter is simply increased, the weight of the lead screw will increase linearly due to the limited installation environment, making the lead screw inconvenient to install, and will cause the torque burden of the rotating motor to increase, which greatly affects the stability of the lead screw in long-distance transmission. Summary of the Invention

[0005] In response to the above-mentioned prior art, the technical problem to be solved by the present invention is that when long-distance transmission is required, it is necessary to reduce the problem of screw sagging and stress deformation by increasing the screw diameter. However, if the screw diameter is simply increased, the weight of the screw will increase linearly due to the limited installation environment, making the screw inconvenient to install, and will cause the torque burden of the rotating motor to increase, which greatly affects the stability of the screw in long-distance transmission.

[0006] To solve the above problems, the present invention provides a screw rod multi-point equidistant follow-up support mechanism, comprising:

[0007] A track is provided on which a load end 1 and a load end 2 are slidably connected. A follower bracket is installed on the load end 2, a screw nut is provided on the follower bracket, a transmission screw is installed on the load end 1, and the transmission screw is threadedly connected to the screw nut.

[0008] A scissor-type transfer arm is installed between the load end 1 and the follower bracket. The two free ends of the scissor-type transfer arm are respectively installed with the corresponding load end 1 and the follower bracket. A plurality of anti-drooping support arms are evenly arranged above the scissor-type transfer arm along the length direction of the scissor-type transfer arm. The anti-drooping support arms are installed with the cross axis of the scissor-type transfer arm. A support sleeve is embedded in each anti-drooping support arm. The support sleeve is sleeved with the transmission screw. The two ends of the anti-drooping support arm are slidably connected to the track through a support slider.

[0009] The wear reversing mechanism includes limit side plates arranged on both sides of the support sleeve, a connecting rod connected in series with the tops of the two limit side plates, and a flip drive wheel that rolls with the outer ring of the support sleeve. The flip drive wheel can drive the support sleeve to roll. A detection jacking assembly is installed on the connecting rod. The detection jacking assembly is used to provide a continuous vertical upward force to the connecting rod;

[0010] Intelligent supporter, the intelligent supporter is installed on the load end, and an analysis module and a switching module are provided on the intelligent supporter. The input end of the analysis module is connected to the detection jacking component signal, the output end of the analysis module is connected to the switching module signal, and the output end of the switching module is connected to the flip drive wheel signal.

[0011] In the above-mentioned multi-point equidistant follow-up support mechanism of the screw, multi-point equidistant support can be achieved for the middle suspended section of the transmission screw, thereby reducing the problem of sagging and deformation of the transmission screw under force. During use, the position of the support sleeve is adjusted in time so that the transmission screw can always remain in a straight state, and the transmission screw can always have good support.

[0012] As a further improvement of the present application, a driving assembly that cooperates with the track is installed on the load end, and the driving assembly is used to drive the load end to move along the track. A driving member is installed on the load end, and the output end of the driving member is installed with the transmission screw, and the driving member is used to drive the transmission screw to rotate.

[0013] As a further improvement of the present application, multiple anti-sagging support arms are evenly distributed on the scissor-type transfer arm, one free end of the scissor-type transfer arm is installed with load end one through mounting plate one, and the other free end of the scissor-type transfer arm is installed with the follow-up bracket through mounting plate two, and both ends of the follow-up bracket are slidably connected to the track through support sliders.

[0014] As a further improvement of the present application, the flip driving wheel is mounted on one of the limiting side plates, and an arc-shaped abutting surface is provided on a side of each limiting side plate close to the supporting sleeve.

[0015] As another improvement of the present application, the detection lifting assembly includes a detection cylinder, an upper piston plate and a lower piston plate both of which are vertically slidably connected to the inner cavity of the detection cylinder, and a support spring installed under the lower piston plate. The top of the upper piston plate is fixed to the end of the connecting rod, and a pressure sensor is installed at the connection between the upper piston plate and the connecting rod. The lower piston plate is arranged below the upper piston plate, and a blocking block is arranged below the lower piston plate. A pressure relief port corresponding to the blocking block is opened on the lower piston plate, and an upper proximity switch corresponding to the upper piston plate is embedded in the inner wall of the detection cylinder, and the input end of the analysis module is respectively connected to the upper proximity switch and the pressure sensor signal.

[0016] As another improved supplement to the present application, a lower proximity switch located below the upper proximity switch is installed on the inner wall of the detection cylinder, and a limit block fixed to the inner wall of the detection cylinder is provided above the upper piston plate, and the input end of the analysis module is connected to the lower proximity switch signal.

[0017] As another improved supplement to the present application, the inner cavity of the detection cylinder is separated by the upper piston plate and the lower piston plate to form a pressure chamber, and the side wall of the detection cylinder close to the pressure relief port is installed with an air pipe connected to the pressure chamber, and the top of the lower piston plate is slidably connected with a blocking plate corresponding to the pressure relief port, the side of the blocking plate corresponds to the air pipe, and a reset spring is installed on the side of the blocking plate away from the air pipe.

[0018] As another improvement of the present application, a guide rod abutting against the blocking plate is inserted into the middle of the gas pipe, a balancing hole is installed at the bottom of the detection cylinder, and an air pump is externally connected to the input end of the gas pipe.

[0019] To sum up, when the follower bracket is driven to move by controlling the rotation of the transmission screw, the distance between the follower bracket and the load end will be adjusted, thereby synchronously adjusting the distance between the two ends of the scissor-type transmission arm. After the scissor-type transmission arm is extended, the anti-droop support arm installed on the cross axis of the scissor-type transmission arm will be evenly expanded with the extended scissor-type transmission arm. During the expansion process, multiple anti-droop support arms 8 are evenly expanded in an equidistant state to support the middle part of the transmission screw, reduce the spacing of the suspended part of the transmission screw, and provide better support for the middle part of the transmission screw, thereby reducing the problem of sagging and stress deformation of the transmission screw. After the bottom inner ring of the support sleeve gradually wears out, the support sleeve can continue to be close to the bottom of the transmission screw to support it and reduce its sagging deformation. After the bottom inner ring of the support sleeve wears to a certain extent, the flip drive wheel can be controlled to work to drive the support sleeve to rotate, and the part of the top inner ring of the support sleeve with better wear can be replaced to the bottom, so that the transmission screw is always well supported, thereby improving the service life of each support sleeve and reducing the maintenance cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a schematic diagram of the overall structure of the first and second implementation methods of this application;

[0021] Figure 2 Schematic diagram of the positions of the scissor-type transmission arm and the transmission screw rod in the first and second embodiments of the present application;

[0022] Figure 3 This is a simplified overall structural diagram of the first and second implementation modes of the present application;

[0023] Figure 4 This is a simplified overall structural diagram of the scissor-type transfer arm after extension according to the first and second embodiments of the present application;

[0024] Figure 5 This is a control principle diagram of the intelligent support device according to the first embodiment of the present application;

[0025] Figure 6 Schematic diagram of the wear reversing mechanism structure of the first and second embodiments of the present application;

[0026] Figure 7 Schematic diagram of the structure of the limiting side and detection jacking assembly of the first and second embodiments of the present application;

[0027] Figure 8 Schematic diagram of the position of the bottom of the support sleeve after wear in the first and second embodiments of the present application;

[0028] Figure 9 Schematic diagram of the position of the support sleeve after reversing in the first and second embodiments of the present application;

[0029] Figure 10 Schematic diagram of the position of the top of the support sleeve after wear in the first and second embodiments of the present application;

[0030] Figure 11 This is a control principle diagram of the intelligent support device of the second embodiment of this application.

[0031] Description of the numbers in the figure:

[0032] 1. Track; 2. Load end 1; 3. Load end 2; 4. Drive screw; 5. Follow-up bracket; 6. Screw nut; 7. Scissor-type transfer arm; 8. Anti-sagging support arm; 9. Support sleeve; 10. Support slider; 11. Mounting plate 1; 12. Mounting plate 2; 13. Limit side plate; 14. Flip drive wheel; 15. Connecting rod; 16. Detection cylinder; 17. Upper piston plate; 18. Lower piston plate; 19. Support spring; 20. Pressure chamber; 21. Air pipe; 22. Pressure relief port; 23. Blocking plate; 24. Upper proximity switch; 25. Lower proximity switch; 26. Balancing hole; 27. Pressure sensor; 28. Limit block; 29. ​​Blocking block. DETAILED DESCRIPTION

[0033] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0034] The first implementation method:

[0035] Figures 1-6 A screw multi-point equidistant follow-up support mechanism is shown, including a track 1, a scissor-type transmission arm 7, a wear reversing mechanism and an intelligent supporter. The load end 1 2 and the load end 2 3 are slidingly connected on the track 1, and a follow-up bracket 5 is installed on the load end 2 3. The follow-up bracket 5 is provided with a screw nut 6. A transmission screw 4 is installed on the load end 1 2, and the transmission screw 4 is threadedly connected to the screw nut 6. By controlling the rotation of the transmission screw 4, since the screw nut 6 and the transmission screw 4 are threadedly connected, the screw nut 6 and the follow-up bracket 5 are controlled to move synchronously along the track 1, and the load end 2 3 is synchronously driven to move along the track 1, thereby adjusting the distance between the load end 1 2 and the load end 2 3 to meet the usage requirements.

[0036] Also, see Figures 1-4 The scissor-type transmission arm 7 is installed between the load end 2 and the follower bracket 5. The two free ends of the scissor-type transmission arm 7 are respectively installed with the corresponding load end 2 and the follower bracket 5. A plurality of anti-drooping support arms 8 are evenly arranged above the scissor-type transmission arm 7 along the length direction of the scissor-type transmission arm 7. The anti-drooping support arms 8 are installed with the cross axis of the scissor-type transmission arm 7. The scissor-type transmission arm 7 is a common scissor-type structure support arm in the prior art. It can synchronously control the cross axis on the central axis of the scissor-type transmission arm 7 when the scissor-type transmission arm 7 is extended. The fork shaft is synchronously and evenly expanded, which is an existing technology well known to those skilled in the art. The present application will not elaborate on its working principle and specific structure. A support sleeve 9 is embedded in each anti-drooping support arm 8, and the support sleeve 9 is sleeved with the transmission screw 4. The two ends of the anti-drooping support arm 8 are slidably connected to the track 1 through the support slider 10. When the follower bracket 5 is driven to move by controlling the rotation of the transmission screw 4, the distance between the follower bracket 5 and the load end 2 is adjusted, thereby synchronously adjusting the distance between the two ends of the scissor-type transmission arm 7. After the scissor-type transmission arm 7 is extended, as shown in FIG. Figure 4As shown, the anti-drooping support arm 8 installed on the cross axis of the scissors-type transmission arm 7 will be evenly expanded as the scissors-type transmission arm 7 is extended. During the expansion process, multiple anti-drooping support arms 8 are evenly expanded in an equidistant state, and multiple anti-drooping support arms 8 always maintain the same spacing, supporting the middle part of the transmission screw 4, reducing the spacing of the suspended part of the transmission screw 4, and providing better support for the suspended part of the middle part of the transmission screw 4, so that the transmission screw 4 does not deform under force during long-distance transmission, thereby reducing the sagging and deformation problems of the transmission screw 4, and the support sleeve 9 is socketed with the outer ring of the transmission screw 4. The support sleeve 9 is made of wear-resistant material, which can reduce the wear between the transmission screw 4 and the anti-drooping support arm 8. The support sleeve 9 and the anti-drooping support arm 8 are replaceable. After the support sleeve 9 is worn, it can be replaced, so that the transmission screw 4 can always remain in a straight state, reducing its sagging and deformation.

[0037] It is worth mentioning that see Figure 2 and Figure 6 The wear reversing mechanism includes a limiting side plate 13 arranged on both sides of the support sleeve 9, a connecting rod 15 connected in series with the top of the two limiting side plates 13, and a flip driving wheel 14 rolling with the outer ring of the support sleeve 9. The flip driving wheel 14 can drive the support sleeve 9 to roll, and a detection jacking assembly is installed on the connecting rod 15. The detection jacking assembly is used to provide a continuous vertical upward force to the connecting rod 15. Due to the action of gravity, the bottom of the transmission screw 4 will be close to the bottom inner ring of the support sleeve 9. When the support sleeve 9 supports the transmission screw 4, it mainly supports the transmission screw 4 through the bottom inner ring of the support sleeve 9 to keep it in a straight state. Therefore, the degree of wear of the bottom inner ring of the support sleeve 9 will be greater than that of other parts. By setting limiting positions on both sides of the support sleeve 9 The side plate 13 and the limiting side plate 13 can move in the vertical direction with the support sleeve 9, and continue to move upward by controlling the connecting rod 15, synchronously controlling the limiting side plate 13 and the support sleeve 9 to continue to move upward, so that after the bottom inner ring of the support sleeve 9 is gradually worn, the support sleeve 9 continues to be close to the bottom of the transmission screw 4 to support it and reduce its sagging deformation. After the bottom inner ring of the support sleeve 9 is worn to a certain extent, the flip drive wheel 14 can be controlled to work, driving the support sleeve 9 to rotate 180°, and the top inner ring of the support sleeve 9 with the better wear degree is replaced to the bottom, continuously supporting the transmission screw 4, so that the transmission screw 4 is always well supported, thereby improving the service life of each support sleeve 9 and reducing the maintenance cycle.

[0038] In addition, the intelligent supporter is installed on the load end 2, and an analysis module and a switching module are provided on the intelligent supporter. The input end of the analysis module is connected to the detection jacking component signal, the output end of the analysis module is connected to the switching module signal, and the output end of the switching module is connected to the flip drive wheel 14 signal. When the transmission screw 4 drives the follower bracket 5 to move, the scissor-type transmission arm 7 extends and drives the anti-drooping support arm 8 to move, so as to achieve multi-point equidistant support for the middle suspended section of the transmission screw 4, reduce the sagging and deformation of the transmission screw 4, and support the outer ring of the transmission screw 4 by the support sleeve 9 installed on the anti-drooping support arm 8. The lifting assembly continuously controls the connecting rod 15 to move upward, and simultaneously drives the limiting side plate 13 and the supporting sleeve 9 to move upward, so that the bottom inner ring of the supporting sleeve 9 is always close to the bottom of the transmission screw 4, supporting the transmission screw 4. When the bottom of the supporting sleeve 9 is worn to a certain extent, the analysis module sends a switching signal to the switching module, and the switching module controls the flip driving wheel 14 to work. The flip driving wheel 14 drives the supporting sleeve 9 to rotate 180°, and switches the part of the supporting sleeve 9 with less wear to the bottom of the transmission screw 4, so that the transmission screw 4 is always well supported, thereby improving the service life of each supporting sleeve 9 and reducing the maintenance cycle.

[0039] In this embodiment, a driving component that cooperates with the track 1 is installed on the load end 1 2. The driving component is used to drive the load end 1 2 to move along the track 1. By installing the driving component on the load end 1 2, the load end 1 2 can be driven to move along the track 1, thereby driving the load end 1 2 and the load end 2 3 to move synchronously and transfer them to the specified position. A driving member is installed on the load end 1 2, and the output end of the driving member is installed with the transmission screw 4. The driving member is used to drive the transmission screw 4 to rotate. The driving member is preferably an electric motor or a pneumatic motor. The driving member installed on the load end 1 2 can control the operation of the transmission screw 4, thereby adjusting the position of the load end 2 3, making it convenient to synchronously control the displacement of the load end 2 3 through the screw transmission.

[0040] In addition, multiple anti-sagging support arms 8 are evenly distributed on the scissor-type transfer arm 7. One free end of the scissor-type transfer arm 7 is installed with the load end 2 through the mounting plate 11, and the other free end of the scissor-type transfer arm 7 is installed with the follower bracket 5 through the mounting plate 2 12. The two ends of the follower bracket 5 are slidably connected to the track 1 through the support slider 10. The two ends of the scissor-type transfer arm 7 are installed with the corresponding load end 2 and the follower bracket 5. As the distance between the load end 2 and the follower bracket 5 is adjusted, the extension distance of the scissor-type transfer arm 7 can be controlled, thereby synchronizing The suspended section of the transmission screw 4 is supported by the anti-drooping support arm 8, so that the middle suspended section of the transmission screw 4 is supported at multiple points at equal intervals, so that the transmission screw 4 is not easy to sag or deform during use. The flip driving wheel 14 is installed on one of the limiting side plates 13. Each limiting side plate 13 is provided with an arc-shaped abutting surface on the side close to the support sleeve 9, so that when the limiting side plate 13 moves up and down, it can synchronously drive the support sleeve 9 to move up and down. When the flip driving wheel 14 is working, it can control the rotation of the support sleeve 9, thereby adjusting the position of the support sleeve 9.

[0041] The second implementation method:

[0042] Figures 6-11 The screw multi-point equidistant follow-up support mechanism shown is different from the first embodiment in that the detection lifting assembly includes a detection cylinder 16, an upper piston plate 17 and a lower piston plate 18, both of which are vertically slidably connected to the inner cavity of the detection cylinder 16, and a support spring 19 installed below the lower piston plate 18. The support spring 19 provides a continuous supporting force for the lower piston plate 18. The top of the upper piston plate 17 is fixed to the end of the connecting rod 15, and a pressure sensor 27 is installed at the connection between the upper piston plate 17 and the connecting rod 15. The lower piston plate 18 is arranged below the upper piston plate 17, and a blocking block 29 is provided below the lower piston plate 18. High-pressure gas is filled between the upper piston plate 17 and the lower piston plate 18. Since the bottom of the lower piston plate 18 is limited by the blocking block 29, the upper piston plate 17 is pushed by the high-pressure gas and is continuously supported. Continuing upward, it will drive the connecting rod 15 and the limiting side plate 13 to move upward, so that the bottom inner ring of the support sleeve 9 is always close to the bottom of the transmission screw 4, supporting the transmission screw 4. A pressure relief port 22 corresponding to the blocking block 29 is provided on the lower piston plate 18, and an upper proximity switch 24 corresponding to the upper piston plate 17 is embedded in the inner wall of the detection cylinder 16. The input end of the analysis module is respectively connected to the upper proximity switch 24 and the pressure sensor 27 signal. The pressure sensor 27 can detect the force of the upper piston plate 17 on the connecting rod 15, that is, the force on the support sleeve 9, and feed it back to the analysis module. The analysis module determines the force of the support sleeve 9 on the transmission screw 4 and adjusts the air pressure injected into the inner cavity of the detection cylinder 16, so that the support sleeve 9 always has a good supporting effect on the transmission screw 4. Figure 8As shown, when the support sleeve 9 continues to wear and moves upward, it will simultaneously drive the upper piston plate 17 to move upward, thereby reducing the pressure in the inner cavity of the detection cylinder 16. When the force exerted by the pressure on the lower piston plate 18 is less than the elastic force of the support spring 19 on the lower piston plate 18, the support spring 19 will push the lower piston plate 18 upward. At this time, the pressure relief port 22 on the lower piston plate 18 breaks away from the obstruction of the blocking block 29, and the external gas enters the inner cavity of the detection cylinder 16 through the pressure relief port 22, balancing the internal and external air pressures of the detection cylinder 16. At this time, the upper piston plate 17 moves downward under the action of gravity, and at the same time, the top inner ring of the support sleeve 9 moves downward and contacts the top of the transmission screw 4. At this time, the lowered upper piston plate 17 contacts the upper proximity switch 24. The analysis module receives the position signal fed back by the upper proximity switch 24 and determines that the bottom inner ring of the support sleeve 9 has been worn to the preset point. At this time, the analysis module sends a corresponding switching signal to the switching module, and the switching module controls the flip drive wheel 14 to work and rotate the support sleeve 9 180°. Figure 9 As shown, the unworn portion of the support sleeve 9 switches to the bottom and abuts against the transmission screw 4, supporting the transmission screw 4, so that the support sleeve 9 always has a good supporting effect on the transmission screw 4. By injecting high-pressure gas into the inner cavity of the detection tube 16 again, the support sleeve 9 is controlled to continuously support the transmission screw 4, so that the transmission screw 4 is not easy to sag or deform during use.

[0043] It is worth mentioning that the inner wall of the detection cylinder 16 is installed with a lower proximity switch 25 located below the upper proximity switch 24, and a limit block 28 fixed to the inner wall of the detection cylinder 16 is provided above the upper piston plate 17. By setting the limit block 28, the upward position of the upper piston plate 17 can be limited, the wear degree of the support sleeve 9 can be limited, and the support sleeve 9 can be prevented from being worn through, thereby protecting the anti-sagging support arm 8. The input end of the analysis module is connected to the signal of the lower proximity switch 25. After the support sleeve 9 rotates 180°, the bottom inner ring of the support sleeve 9 is worn again, such as Figure 10As shown, at this time, the lower piston plate 18 moves upward to unblock the pressure relief port 22. After the air pressure inside and outside the inner cavity of the detection cylinder 16 is balanced, the upper piston plate 17 drives the limit side plate 13 and the support sleeve 9 to move downward synchronously. The top inner ring of the support sleeve 9 contacts the top of the transmission screw 4. The corresponding upper piston plate 17 moves downward until it contacts the lower proximity switch 25. After receiving the position signal feedback from the lower proximity switch 25, the analysis module determines that the upper and lower inner rings of the support sleeve 9 have been worn to the set position. The analysis module sends a corresponding switching signal to the switching module. The switching module controls the flip drive wheel 14 to work. The flip drive wheel 14 drives the support sleeve 9 to rotate 90°, moving the inner ring of the side of the support sleeve 9 to the bottom of the transmission screw 4, effectively supporting the bottom of the transmission screw 4 again. At the same time, the switching module sends a corresponding reminder signal to remind the staff that the support sleeve 9 is worn to the extent that it needs to be replaced. The staff can replace it in time according to the usage status of the equipment, so that the support sleeve 9 can always provide effective support for the transmission screw 4, reducing the problem of sagging and deformation of the transmission screw 4 during operation.

[0044] In addition, the inner cavity of the detection cylinder 16 is divided into a pressure chamber 20 by the upper piston plate 17 and the lower piston plate 18. The side wall of the detection cylinder 16 near the pressure relief port 22 is installed with an air supply pipe 21 connected to the pressure chamber 20. The top of the lower piston plate 18 is slidably connected with a blocking plate 23 corresponding to the pressure relief port 22. The side of the blocking plate 23 corresponds to the air supply pipe 21. A return spring is installed on the side of the blocking plate 23 away from the air supply pipe 21. In the initial stage, high-pressure gas is filled into the pressure chamber 20 through the air supply pipe 21, thereby giving the upper piston plate 17 a continuous upward thrust. After the gas injection is completed, the return spring pushes the blocking plate 23 to seal the opening of the air supply pipe 21, so that the inner cavity of the pressure chamber 20 always maintains a high-pressure environment; after the lower piston plate 18 moves up to expose the pressure relief port 22, it is necessary to re-inflate the inner cavity of the pressure chamber 20 through the air supply pipe 21. At this time, The gas entering the air supply pipe 21 pushes the blocking plate 23 to disengage from the blockage of the air supply pipe 21. At the same time, the bottom of the pushed blocking plate 23 blocks the pressure relief port 22, so that the pressure chamber 20 forms a closed space. When the inner cavity of the pressure chamber 20 is inflated through the air supply pipe 21, its pressure can be gradually increased, thereby gradually pushing the upper piston plate 17 upward. A guide rod that abuts the blocking plate 23 is inserted in the middle of the air supply pipe 21. A balancing hole 26 is installed at the bottom of the detection cylinder 16. The input end of the air supply pipe 21 is externally connected to an air pump. By controlling the operation of the air pump, high-pressure gas is injected into the air supply pipe 21. When the high-pressure gas is injected, the blocking plate 23 is pushed to move. By setting the guide rod, the blocking plate 23 can move stably, and play a stable blocking role on the opening of the air supply pipe 21 and the pressure relief port 22. By setting the balancing hole 26, the pressures of the inner and outer cavities of the detection cylinder 16 can be balanced.

[0045] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. The screw rod multi-point equidistant follow-up support mechanism is characterized by: include: A track (1), wherein a load end 1 (2) and a load end 2 (3) are slidably connected to the track (1), a follower bracket (5) is installed on the load end 2 (3), a screw nut (6) is provided on the follower bracket (5), a transmission screw (4) is installed on the load end 1 (2), and the transmission screw (4) is threadedly connected to the screw nut (6); A scissor-type transmission arm (7), wherein the scissor-type transmission arm (7) is installed between the load end (2) and the follower bracket (5), and the two free ends of the scissor-type transmission arm (7) are respectively installed with the corresponding load end (2) and the follower bracket (5), and a plurality of anti-drooping support arms (8) are evenly arranged above the scissor-type transmission arm (7) along the length direction of the scissor-type transmission arm (7), and the anti-drooping support arms (8) are installed with the cross axis of the scissor-type transmission arm (7), and each of the anti-drooping support arms (8) is embedded with a support sleeve (9), and the support sleeve (9) is sleeved with the transmission screw (4), and the two ends of the anti-drooping support arm (8) are slidably connected to the track (1) through a support slider (10); A wear reversing mechanism, the wear reversing mechanism comprising limiting side plates (13) arranged on both sides of a support sleeve (9), a connecting rod (15) connected in series with the tops of the two limiting side plates (13), and a flip driving wheel (14) rolling with the outer ring of the support sleeve (9), wherein the flip driving wheel (14) can drive the support sleeve (9) to roll, and a detection jacking assembly is installed on the connecting rod (15), and the detection jacking assembly is used to provide a continuous vertical upward force to the connecting rod (15); An intelligent supporter is installed on a load end (2), and an analysis module and a switching module are provided on the intelligent supporter. The input end of the analysis module is connected to the detection jacking component signal, the output end of the analysis module is connected to the switching module signal, and the output end of the switching module is connected to the flip drive wheel (14) signal.

2. The screw rod multi-point equidistant follow-up support mechanism according to claim 1, characterized in that: A driving component that matches the track (1) is installed on the load end (2), and the driving component is used to drive the load end (2) to move along the track (1). A driving member is installed on the load end (2), and the output end of the driving member is installed with the transmission screw (4), and the driving member is used to drive the transmission screw (4) to rotate.

3. The screw rod multi-point equidistant follow-up support mechanism according to claim 1, characterized in that: A plurality of anti-sagging support arms (8) are evenly distributed on the scissor-type transmission arm (7), one free end of the scissor-type transmission arm (7) is mounted on the load end (2) via a first mounting plate (11), the other free end of the scissor-type transmission arm (7) is mounted on the follower bracket (5) via a second mounting plate (12), and both ends of the follower bracket (5) are slidably connected to the track (1) via a support slider (10).

4. The screw rod multi-point equidistant follow-up support mechanism according to claim 1, characterized in that: The flip driving wheel (14) is mounted on one of the limiting side plates (13), and each limiting side plate (13) is provided with an arc-shaped abutting surface on one side close to the supporting sleeve (9).

5. The screw rod multi-point equidistant follow-up support mechanism according to claim 1, characterized in that: The detection lifting assembly includes a detection cylinder (16), an upper piston plate (17) and a lower piston plate (18) both of which are vertically slidably connected to the inner cavity of the detection cylinder (16), and a support spring (19) installed below the lower piston plate (18), the top of the upper piston plate (17) is fixed to the end of the connecting rod (15), and a pressure sensor (27) is installed at the connection between the upper piston plate (17) and the connecting rod (15), the lower piston plate (18) is arranged below the upper piston plate (17), a blocking block (29) is arranged below the lower piston plate (18), a pressure relief port (22) corresponding to the blocking block (29) is opened on the lower piston plate (18), an upper proximity switch (24) corresponding to the upper piston plate (17) is embedded in the inner wall of the detection cylinder (16), and the input end of the analysis module is respectively connected to the upper proximity switch (24) and the pressure sensor (27) for signal.

6. The screw rod multi-point equidistant follow-up support mechanism according to claim 5, characterized in that: The inner wall of the detection cylinder (16) is provided with a lower proximity switch (25) located below the upper proximity switch (24), and a limit block (28) fixed to the inner wall of the detection cylinder (16) is provided above the upper piston plate (17). The input end of the analysis module is connected to the signal of the lower proximity switch (25).

7. The screw rod multi-point equidistant follow-up support mechanism according to claim 6, characterized in that: The inner cavity of the detection cylinder (16) is divided by the upper piston plate (17) and the lower piston plate (18) to form a pressure chamber (20). The side wall of the detection cylinder (16) close to the pressure relief port (22) is installed with an air pipe (21) connected to the pressure chamber (20). The top of the lower piston plate (18) is slidably connected with a blocking plate (23) corresponding to the pressure relief port (22). The side of the blocking plate (23) corresponds to the air pipe (21). A return spring is installed on the side of the blocking plate (23) away from the air pipe (21).

8. The screw rod multi-point equidistant follow-up support mechanism according to claim 7, characterized in that: A guide rod abutting against a blocking plate (23) is inserted in the middle of the gas delivery pipe (21), a balancing hole (26) is installed at the bottom of the detection cylinder (16), and an air pump is externally connected to the input end of the gas delivery pipe (21).

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