Balanced downhole crane with front hydraulic auxiliary support

Abstract

The present application relates to the technical field of underground crane, and specifically discloses a balanced underground crane with front-end hydraulic auxiliary support frame, which comprises a base table, a moving mounting block is slidably mounted from the left side to the outer side in the base table, and a baffle is fixedly installed on the outer side of the moving mounting block; the base table, the sliding moving mounting block, the baffle and a double-layer connecting rod are combined to form a front-end support main frame structure, which fundamentally solves the core problem that the traditional crane only relies on the rear counterweight and is prone to forward tilting under heavy load, the whole support mechanism is stretched forward during operation, the support plate is attached to the mine tunnel ground, independent ground support reaction force is provided for the front end of the crane, the overturning resisting moment is greatly supplemented, the load bearing pressure of the rear counterweight is shared, even if large weight materials are lifted, and the operation is carried out on the inclined mine surface, the sinking trend of the vehicle head can be effectively inhibited, the overturning and falling goods safety hazards are eliminated, and the overall structural stability of the underground crane during the heavy load lifting process is significantly improved.

Description

Technical Field

[0001] This invention relates to the field of underground mine crane technology, and in particular to a balanced underground mine crane with a front-end hydraulic auxiliary support frame. Background Technology

[0002] Currently, balanced underground cranes are widely used in mining operations and other fields. Their working principle mainly relies on the counterweight at the rear of the vehicle to balance the lifting load at the front. However, in actual operation, when the underground crane lifts heavy goods or the working ground has a certain slope, the rear counterweight alone cannot provide sufficient anti-overturning moment. The front of the underground crane is prone to sinking or tilting forward, which poses a significant safety hazard.

[0003] In addition, although some existing underground cranes have added auxiliary support structures at the front end, these support structures mostly adopt fixed or single-direction telescopic designs. The adjustment methods for the support angle and support range are relatively simple, making it difficult to flexibly adapt to actual working conditions. This results in limited support effect and insufficient applicability, such as different ground heights and different cargo center of gravity positions.

[0004] In addition, when underground cranes travel on uneven surfaces or in mine construction sites, the impact and vibration caused by uneven surfaces are directly transmitted to the vehicle body and lifting mechanism. This not only affects the accurate positioning of the boom on the goods, but also easily causes fatigue damage to various connecting parts, shortens the service life of the equipment, and reduces the operating comfort and safety of the operators. Summary of the Invention

[0005] The purpose of this invention is to provide a balanced downhole crane with a front-end hydraulic auxiliary support frame to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a balanced downhole crane with a front-end hydraulic auxiliary support frame, comprising a base platform, wherein a movable mounting block is slidably installed from the left side to the outside of the base platform, and a baffle is fixedly installed on the outside of the movable mounting block; The baffle is provided with a first adjusting rod at both the front and rear ends on the right side. A second slider is rotatably mounted on the upper right side of the first adjusting rod. A second moving rod is provided below the second slider. A support plate is mounted on the lower ends of the two second moving rods. The upper end of the support plate is slidably fitted with a bidirectional adjustment plate at both the front and rear ends; A support rod is slidably installed from the upper end face to the lower end face of the middle part of the two bidirectional adjustment plates; A convex gear is provided above the support rod, and a drive gear is meshed on the outer side of the convex gear. A shock-absorbing rod is slidably mounted on the outer side of the baffle, and a caster wheel is provided on the outer side of the shock-absorbing rod.

[0007] Preferably, track assemblies are rotatably mounted on the front and rear sides of the base platform, an engine assembly is fixedly mounted on the right side of the base platform, a rear leg support rod is fixedly mounted on the right side of the engine assembly, a rotating platform is rotatably mounted on the upper surface of the base platform, dust covers are fixedly mounted on the front and rear sides of the upper surface of the rotating platform, a boom is rotatably mounted on the upper inside of the two dust covers, telescopic rods are rotatably mounted on the right sides of the boom, the lower ends of the telescopic rods are rotatably mounted on the upper surface of the rotating platform, a fork arm is slidably mounted from the inside to the outside of the boom, and a residual fork rod is mounted on the outside of the fork arm.

[0008] Preferably, a first sliding groove is provided on the inner sidewall of the left side of the base platform, a first telescopic pump is fixedly installed inside the base platform, a movable mounting block is fixedly installed on the telescopic rod of the first telescopic pump, and a first slider is fixedly installed at the front and rear ends of the right side of the movable mounting block, and the first slider is slidably installed inside the first sliding groove.

[0009] Preferably, the upper end face to the interior and the lower end face to the interior of the movable mounting block are recessed structures. A baffle is fixedly installed on one outer end of the movable mounting block. A U-shaped buckle is fixedly installed at the upper right corner of the baffle. A first adjusting rod is rotatably installed inside the U-shaped buckle. A second slider is rotatably installed on the upper right end of the first adjusting rod. The second slider is slidably installed inside the second slide groove. The second slide groove is opened on the left side of the base platform. A flexible pad is fixedly installed at the upper inside of the second slide groove.

[0010] Preferably, a first extrusion rod is fixedly installed on the lower end face of the second slider, a first hydraulic cylinder is slidably installed on the outer side of the lower end of the first extrusion rod, the lower end of the first hydraulic cylinder is fixedly installed on the inner ground of the second slide groove, a second moving rod is slidably installed from the inside of the first hydraulic cylinder to the outer side of its lower end, the lower end of the second moving rod extends to the outer side of the base platform, and a support plate is fixedly installed on the lower ends of the two second moving rods.

[0011] Preferably, the upper end face of the support plate is provided with a cavity groove, and a dual-axis motor is fixedly installed inside the cavity groove. The output shafts at both ends of the dual-axis motor are fixedly installed with a first threaded rod. A third slider is rotatably installed on the circumferential surface of the first threaded rod and inside the cavity groove. Bidirectional adjustment plates are rotatably installed on the circumferential surfaces of the front and rear third sliders. The bidirectional adjustment plates have a V-shaped structure, and the adjacent ends of the front and rear bidirectional adjustment plates are rotatably connected.

[0012] Preferably, a second hydraulic cylinder is fixedly installed from the upper end face to the lower end face at the position where the two bidirectional adjustment plates are rotatably connected. A support rod is slidably installed from the inside to the lower outer side of the second hydraulic cylinder. A third extrusion rod is slidably installed from the inside to the upper outer side of the second hydraulic cylinder. A convex gear is rotatably installed on the upper outer side of the third extrusion rod. A fourth slider is rotatably installed on the upper outer side of the convex gear. A convex limiting groove with an arc structure is opened from one end to the other end of the fourth slider. The convex limiting groove and the convex gear are slidably connected. A limiting rod is installed between the outer side of the fourth slider and the upper outer side of the second hydraulic cylinder. The fourth slider is slidably installed inside the third sliding groove, which is opened inside the movable mounting block.

[0013] Preferably, symmetrical fixing plates are fixedly installed inside the upper groove of the movable mounting block. Springs are fixedly installed on the upper surfaces of the two fixing plates. A rotating plate is fixedly installed on the adjacent end of each spring. The upper end of the rotating plate is rotatably installed on the adjacent end of the fixing plate. The lower end of the rotating plate extends through the third sliding groove to the lower groove of the movable mounting block. A drive gear is rotatably installed on the lower end of the rotating plate. A chain is rotatably installed on the outer side of the drive gear. A forward and reverse motor is rotatably installed on the other end of the chain. The forward and reverse motor is fixedly installed in the middle of the rotating plate. The drive gear and the adjacent convex gear mesh with each other.

[0014] Preferably, a sliding rod is fixedly installed on both the front and rear edges of the right side of the baffle. A second telescopic pump is rotatably installed on the circumferential surface of the upper sliding rod. A floor plate is rotatably installed on the telescopic rod of the second telescopic pump. A sliding plate is rotatably installed on the upper part of the floor plate. A cavity plate is slidably installed on the outer side of one inner end of the sliding plate. The inner end of the cavity plate is rotatably installed on the circumferential surface of the adjacent lower sliding rod.

[0015] Preferably, symmetrical uprights are fixedly installed on the upper end of the baffle. A convex groove is formed on the left side of the upright and the left side of the baffle. A servo motor is fixedly installed on the upper end of the upright. A second threaded rod is fixedly installed on the output shaft of the servo motor. The second threaded rod extends into the interior of the corresponding convex groove. A symmetrical fifth slider is rotatably installed on the circumferential surface of the second threaded rod. A sliding cavity rod is rotatably installed on the outer side of the fifth slider. A shock-absorbing rod is rotatably installed at the lower end of the sliding cavity rod. A caster wheel is rotatably installed at the lower end of the shock-absorbing rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention relies on a base platform, sliding installation block, baffle, and double-layer connecting rod to form the front-end support main structure, fundamentally solving the core problem of traditional cranes relying solely on rear counterweights and being prone to tilting forward under heavy loads. During operation, the entire support mechanism extends forward, with the support plate conforming to the mine road surface, providing independent ground support reaction force for the front end of the crane, significantly supplementing the anti-overturning moment, and sharing the load-bearing pressure of the rear counterweight. Even when lifting heavy materials or operating on an inclined mine surface, it can effectively suppress the tendency of the crane head to sink, eliminate the safety hazards of overturning and falling materials, and significantly improve the overall structural stability of the underground crane during heavy-load lifting.

[0017] 2. Based on the front-mounted anti-tilting support, this invention adds a hydraulically driven adjusting linkage mechanism to further enhance the anti-overturning support capability. It also adds the advantage of multi-condition adaptive adjustment. The first hydraulic cylinder drives the extrusion rod to rotate synchronously with the slider and adjusting rod, allowing free adjustment of the support plate's extension height and pitch angle. This can adapt to various underground working conditions such as uneven mine tunnels and goods with different centers of gravity. It not only continuously solves the safety hazards of forward tilting under heavy loads, but also breaks through the limitations of traditional fixed support adjustment. It can adapt to the changing underground working environment without changing parts, greatly improving the crane's general operation capability in complex mining scenarios.

[0018] 3. This invention is equipped with a bidirectional adjustment plate and a gear meshing fine-tuning mechanism, which solves the pain point of existing supports that can only be coarsely adjusted and are difficult to finely match the working conditions of the mine tunnel. The convex gear meshes with the drive gear, which can make small-amplitude precise fine-tuning of the height of the bottom support rod and the landing angle. It can precisely adjust the support contact point for local pits and uneven ground and small eccentric goods, resulting in a higher support landing fit and a more uniform force distribution. It makes up for the defects of single large-amplitude adjustment, and takes into account the dual functions of coarse adjustment with large-range extension and fine adjustment with shape adaptation. The support adjustment accuracy and operational flexibility are improved simultaneously.

[0019] 4. This invention integrates a front-mounted anti-tilt support, multi-dimensional adjustable linkages, gear fine-tuning, and a spring-loaded universal wheel shock absorption mechanism to systematically solve the comprehensive problems of vibration transmission from underground surfaces, component fatigue, and inaccurate cargo positioning. The shock-absorbing rod, combined with buffer springs and universal wheels, forms a front-mounted buffer assembly that absorbs and attenuates impacts from landing and driving in stages, preventing vibration transmission to the vehicle body and boom. Combined with an adaptive support structure, it stabilizes the machine body, improves cargo lifting and positioning accuracy, reduces fatigue wear at connection points, extends the overall service life of the underground crane, and simultaneously improves the comfort and safety of underground operators. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a structural diagram of the main body of the present invention; Figure 2 This is a structural diagram of the outer side of the base platform of the present invention; Figure 3 This is a structural diagram of the base platform and engine assembly of the present invention; Figure 4 This is a structural diagram of the outer side of the movable mounting block of the present invention; Figure 5 This is a structural diagram of the outer side and lower end of the movable mounting block of the present invention; Figure 6 This is a cross-sectional view of the movable mounting block of the present invention; Figure 7 This is a structural diagram of the support plate, convex gear, and drive gear of the present invention; Figure 8 This is a structural diagram of the convex gear, drive gear, and forward / reverse motor of the present invention; Figure 9 This is a structural diagram of the second hydraulic cylinder, the third extrusion rod, and the convex gear of the present invention; Figure 10 This is a structural diagram of the second telescopic pump and the cavity plate of the present invention; Figure 11 This is a structural diagram of the upper and left sides of the baffle of the present invention; Figure 12 This is a structural diagram of the baffle, upright, and shock absorber of the present invention.

[0022] Explanation of reference numerals in the attached figures: 1. Base platform; 2. Track assembly; 3. Engine assembly; 4. Rear leg support rod; 5. Turning platform; 6. Dust cover; 7. Boom; 8. Telescopic rod; 9. Arm; 10. Fork; 11. First slide groove; 12. Second slide groove; 13. First telescopic pump; 14. First slider; 15. Movable mounting block; 16. Third slide groove; 17. Baffle; 18. U-shaped buckle; 19. First adjusting rod; 20. Second slider; 21. First pressing rod; 22. First hydraulic cylinder; 23. Second moving rod; 24. Support plate; 25. Cavity groove; 26. Dual-axis motor; 27. First threaded rod; 28. Third slider; 29. ​​Bidirectional adjusting plate; 30. Second hydraulic cylinder; 31. Support rod; 32. Third pressing rod; 33. Convex gear; 34. Fourth slider; 35. Convex limiting groove; 36. Fixing plate; 37. Spring; 38. Rotating plate; 39. Drive gear; 40. Forward and reverse motor; 41. Chain; 42. Limiting rod; 43. Sliding rod; 44. Second telescopic pump; 45. Cavity plate; 46. Sliding plate; 47. Flooring; 48. Upright pole; 49. Convex groove; 50. Servo motor; 51. Second threaded rod; 52. Fifth slider; 53. Sliding cavity rod; 54. Shock absorber rod; 55. Caster wheel; 56. Flexible pad. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1 to 12 The present invention provides a technical solution: A balanced downhole crane with a front-end hydraulic auxiliary support frame includes a base platform 1. Track assemblies 2 are rotatably mounted at both ends of the base platform 1. An engine assembly 3 is fixedly mounted at the right end of the base platform 1, and a rear leg support rod 4 is fixedly mounted at the right end of the engine assembly 3. Figure 1 As shown.

[0025] Therefore, during use, the track assembly 2 can drive the base platform 1 and the entire device to move, the engine assembly 3 provides power output for the entire device, and the rear leg support rod 4 can provide auxiliary support for the rear end of the crane.

[0026] A rotating platform 5 is rotatably mounted on the upper surface of the base 1. Dust covers 6 are fixedly mounted on the front and rear sides of the upper surface of the rotating platform 5. A large arm 7 is rotatably mounted on the upper inner side of the dust cover 6. Telescopic rods 8 are rotatably mounted on the front and rear sides of the left side of the large arm 7. The lower end of the telescopic rod 8 is rotatably mounted on the upper surface of the rotating platform 5. Furthermore, a small arm 9 is slidably mounted from the inside to the outside of the large arm 7. A fork 10 is mounted on the outer right end of the small arm 9. Figure 1 As shown.

[0027] Therefore, during use, the telescopic boom 7 can be adjusted by telescopic boom 8, and the height of fork 9 and fork 10 can be changed synchronously during the telescopic boom 7. Then, the horizontal extension distance of fork 10 can be adjusted by telescopic sliding of fork 9 inside boom 7, so as to adapt to the needs of cargo lifting operations at different distances and heights.

[0028] A first sliding groove 11 is provided on the inner sidewall of the left side of the base platform 1, and a first telescopic pump 13 is fixedly installed inside the base platform 1. A movable mounting block 15 is fixedly installed on the telescopic rod of the first telescopic pump 13. A first slider 14 is fixedly installed at both the front and rear ends of the right side of the movable mounting block 15. The first slider 14 is slidably installed inside the first sliding groove 11. Figure 3 and Figure 4 As shown.

[0029] Therefore, during use, the telescopic operation of the first telescopic pump 13 can drive the movable mounting block 15 to extend or retract horizontally along the direction of the first slide groove 11.

[0030] The upper and lower surfaces of the movable mounting block 15 are recessed to the interior, as shown in the image. Figure 6 As shown. Then, a baffle 17 is fixedly installed on the left side of the movable mounting block 15, and a U-shaped buckle 18 is fixedly installed at the upper corner of the right side of the baffle 17. A first adjusting rod 19 is rotatably installed inside the U-shaped buckle 18, and a second slider 20 is rotatably installed on the right side of the first adjusting rod 19. The second slider 20 is slidably installed inside the second slide groove 12, which is opened on the left side of the base platform 1, as shown. Figure 3 and Figure 4 As shown.

[0031] A first extrusion rod 21 is fixedly installed on the lower end face of the second slider 20. A first hydraulic cylinder 22 is slidably installed on the outer side of the lower end of the first extrusion rod 21. The first hydraulic cylinder 22 is fixedly installed inside the second slide groove 12. A second moving rod 23 is slidably installed from the inner side of the first hydraulic cylinder 22 to the outer side of its lower end. The lower end of the second moving rod 23 extends to the outer side of the base platform 1. A support plate 24 is fixedly installed on the lower ends of the two second moving rods 23. Figure 4 As shown.

[0032] Therefore, during use, the movable mounting block 15 slides along the first slide groove 11. During the displacement of the movable mounting block 15, the first adjusting rod 19 is rotated by the U-shaped buckle 18, which in turn pushes the second slider 20 to slide down along the second slide groove 12. When the second slider 20 slides down, it simultaneously drives the first pressing rod 21 to move down inside the first hydraulic cylinder 22, which compresses the hydraulic medium inside the first hydraulic cylinder 22 and pushes the second moving rod 23 to extend down. Finally, it drives the support plate 24 to move down and fit against the ground, thus providing auxiliary support for the front end of the crane.

[0033] Furthermore, a flexible pad 56 is fixedly installed at the top of the inside of the second slide groove 12 to prevent the second slider 20 from colliding directly with the top of the inside of the second slide groove 12 during the upward sliding process, thus providing a buffering effect.

[0034] This structure effectively distributes the load on the crane body, reduces the pressure on the rear wheels, and prevents the crane from slipping when stationary on sloping terrain. It also improves the overall structural stability of the crane. Combined with the existing gantry's balancing structure, it further enhances the overall balance during front-end operations, reducing the impact of vehicle body sway on operational accuracy. When the crane needs to move normally, the reverse drive adjustment structure resets the movable mounting block 15, and the support plate 24 simultaneously retracts upwards to a position close to the vehicle body, without affecting the crane's normal passage.

[0035] Therefore, through the above structural arrangement, the extension length of the second moving rod 23 can be adjusted according to the specific conditions on site during use, thereby adjusting the height of the support plate 24.

[0036] A cavity groove 25 is formed on the upper end face of the support plate 24. A dual-axis motor 26 is fixedly installed at the center of the cavity groove 25. A first threaded rod 27 is fixedly installed on the output shafts at both ends of the dual-axis motor 26. A third slider 28 is rotatably mounted on the circumferential surface of the first threaded rod 27. The third slider 28 is slidably mounted inside the cavity groove 25. Then, a bidirectional adjustment plate 29 is rotatably mounted on the circumferential surface of the third slider 28. Figure 7 As shown.

[0037] The two bidirectional adjusting plates 29 are rotatably connected at their adjacent ends. Furthermore, a second hydraulic cylinder 30 is fixedly installed from the upper to the lower surface of the adjacent end of the two bidirectional adjusting plates 29. A support rod 31 is slidably installed from the inside to the lower outer part of the second hydraulic cylinder 30 (it should be noted that the support rod 31 has a limit device inside the second hydraulic cylinder 30 and will not slide out of the second hydraulic cylinder 30). A third extrusion rod 32 is slidably installed from the inside to the upper outer part of the second hydraulic cylinder 30. A convex gear 33 is provided above the third extrusion rod 32. A fourth slider 34 is provided on the upper outer side of the convex gear 33. A convex limiting groove 35 is opened from one end to the other of the fourth slider 34. The convex gear 33 is rotatably installed inside the convex limiting groove 35 for limiting the convex gear 33. Figure 9 As shown, the fourth slider 34 is slidably mounted inside the third slide groove 16. The third slide groove 16 has an opening inside the movable mounting block 15, and its upper and lower end faces are through-holes. Figure 6 As shown.

[0038] Fixed plates 36 are fixedly installed on the left and right sides of the upper end face of the movable mounting block 15. Springs 37 are fixedly installed on the upper end face of each fixed plate 36. A rotating plate 38 is fixedly installed on the adjacent end of each spring 37. The rotating plate 38 is rotatably mounted inside the adjacent end of the fixed plate 36. Figure 8As shown, a drive gear 39 is rotatably mounted on the lower end of the rotating plate 38. A forward and reverse motor 40 is fixedly mounted inside the rotating plate 38. Chains 41 are rotatably mounted on the circumferential surfaces of the output shafts at both ends of the forward and reverse motor 40. The chains 41 are rotatably connected to the rotating shafts on the outer surfaces of the drive gear 39. Figure 9 As shown.

[0039] Secondly, a limit rod 42 is rotatably installed between the two sides of the fourth slider 34 and the upper outer side of the second hydraulic cylinder 30 to support and fix the second hydraulic cylinder 30, and to move the fourth slider 34 synchronously.

[0040] Therefore, during use, when the support plate 24 contacts the ground downwards, if the ground is an uneven sloping surface, the dual-axis motor 26 can be started. The dual-axis motor 26 drives the first threaded rod 27 on both output shafts to rotate synchronously. When the first threaded rod 27 rotates, it drives the third slider 28 on both sides to slide outwards along the cavity groove 25. During the displacement of the third slider 28, it pulls the bidirectional adjustment plate 29, which moves the second hydraulic cylinder 30 synchronously, as well as the subsequent unified movement of the structure.

[0041] It should be noted that the circumferential surface of the convex gear 33 is a concave structure, and the internal curve is an irregular S-shaped curved structure. Furthermore, the top of the third extrusion rod 32 is located inside the convex gear 33.

[0042] Therefore, during use, when the forward and reverse motor 40 is started, the output shaft of the forward and reverse motor 40 drives the chain 41 to rotate synchronously. The chain 41 drives the drive gear 39 to rotate synchronously, which in turn drives the convex gear 33 to rotate synchronously. During the rotation of the convex gear 33, the irregular S-shaped concave inner curved surface of the convex gear 33 squeezes the third extrusion rod 32. Under the extrusion action of the curved surface of the convex gear 33, the third extrusion rod 32 slides downward along the second hydraulic cylinder 30, squeezing the hydraulic medium inside the second hydraulic cylinder 30 and pushing the support rod 31 to extend from the lower end of the second hydraulic cylinder 30. The lower end of the support rod 31 abuts against the protruding part of the inclined slope, realizing multi-point independent support for the support plate 24. This allows the support plate 24 to adapt to uneven slopes, always ensuring that the force at each support point is uniform, avoiding the situation where the support plate 24 is suspended and warped due to the inclination of the ground, and further enhancing the stability of the front auxiliary support.

[0043] It should be noted that a sensor is provided on the lower end face of the support plate 24 to monitor the working status of the support plate 24 in real time and coordinate with the subsequent structural operations.

[0044] When the support structure needs to be retracted, the reverse-start dual-axis motor 26 drives the third sliders 28 on both sides to retract towards the center, simultaneously driving the second hydraulic cylinder 30 to reset. Then, the reverse-start forward and reverse motors 40 reset the rotating plate 38. The spring 37 pushes the rotating plate 38 back to its initial position. After the convex gear 33 resets upward, the support rod 31 retracts into the second hydraulic cylinder 30 under the action of hydraulic backflow. The support plate 24 can then retract upward along with the overall structure, returning to its initial retracted state without affecting the normal operation of the crane.

[0045] Secondly, during use, the operation needs to be carried out according to the time situation on site. The two convex gears 33 on the left and right will move closer or further away depending on the situation. This will cause the rotating plate 38 to rotate. In order to prevent the rotating plate 38 from rotating too much and causing the convex gear 33 and the drive gear 39 to separate, the spring 37 will generate a reverse force to keep the rotating plate 38 and the drive gear 39 always meshing with the convex gear 33.

[0046] A sliding rod 43 is fixedly installed between the right side of the baffle 17 and the left side of the base platform 1. The sliding rods 43 are arranged in pairs, one above the other. Figure 10 As shown, a second telescopic pump 44 is rotatably mounted on the circumferential surface of the upper sliding rod 43. A floor plate 47 is rotatably mounted on the telescopic rod of the second telescopic pump 44. A sliding plate 46 is rotatably mounted on the circumferential surface of the central shaft at the upper end of the floor plate 47. A cavity plate 45 is slidably mounted on the outer side of the end of the sliding plate 46 away from the floor plate 47. The cavity plate 45 is rotatably mounted on the circumferential surface of the lower sliding rod 43. Figure 10 As shown.

[0047] Therefore, during use, the floor plate 47 will always be in contact with the ground. With the support of the upper and lower sliding rods 43, the overall extension length can be adjusted by the floor plate 47 rotating around the upper sliding rod 43 and the sliding plate 46 sliding adaptively within the cavity plate 45, thus maintaining stable support for the front end. At the same time, the second telescopic pump 44 can extend to the corresponding length as needed to press the floor plate 47 firmly onto the ground, further improving the overall stability of the crane and preventing the front end of the crane from tilting or swaying.

[0048] Two uprights 48 are fixedly installed on the top of the baffle 17. Both the left side of the uprights 48 and the left side of the baffle 17 have convex grooves 49. A servo motor 50 is fixedly installed on the top of the uprights 48. The output shaft of the servo motor 50 extends into the interior of the uprights 48, and a second threaded rod 51 is fixedly installed on the circumferential surface of the output shaft. The lower end of the second threaded rod 51 extends into the interior of the baffle 17 and into the interior ground of the convex groove 49. A fifth slider 52 is slidably installed on the circumferential surface of the second threaded rod 51 and inside the corresponding convex groove 49. Sliding cavity rods 53 are fixedly installed on the outer side of each fifth slider 52. Shock-absorbing rods 54 are rotatably installed on the lower end of each sliding cavity rod 53. Universal wheels 55 are fixedly installed on the outer side of the lower end of each shock-absorbing rod 54. Figure 11 and Figure 12 As shown.

[0049] Therefore, during use, when the crane travels to the work area, the servo motor 50 can be started. The servo motor 50 drives the second threaded rod 51 on the output shaft to rotate synchronously, driving the fifth slider 52 inside the convex groove 49 to slide downward along the convex groove 49. The fifth slider 52 drives the outer sliding cavity rod 53 to move downward synchronously. The sliding cavity rod 53 pushes the universal wheel 55 downward to contact the ground through the shock absorption rod 54. As the fifth slider 52 continues to move downward, it can slightly lift the front end of the crane, counteracting the downward tilting trend of the front end of the crane caused by lifting the goods, and further assisting in improving the overall balance and stability of the crane.

[0050] When the crane is in operation, the shock absorber 54 can adaptively extend and retract inside the sliding cavity rod 53 to absorb the vibration and impact force transmitted from the road surface. In conjunction with the casters 55, it moves synchronously with the crane and will not hinder the normal movement of the crane. At the same time, it can continuously provide auxiliary support for the front end of the crane and reduce the swaying amplitude of the front end.

[0051] When the lifting operation is completed and the support structure needs to be retracted, the servo motor 50 is started in reverse, which drives the second threaded rod 51 to rotate in the opposite direction. This drives the fifth slider 52 to slide upward along the convex groove 49, thereby causing the sliding cavity rod 53, the shock absorber rod 54, and the caster wheel 55 to retract upward as a whole, so that the caster wheel 55 leaves the ground and does not interfere with the normal lifting operation of the crane.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A balanced downhole crane with a front-end hydraulic auxiliary support frame, comprising a base platform (1), characterized in that: A movable mounting block (15) is slidably installed from the left side to the outside of the base platform (1), and a baffle (17) is fixedly installed on the outside of the movable mounting block (15). The baffle (17) is provided with a first adjusting rod (19) at both the front and rear ends on the right side. A second slider (20) is rotatably installed on the upper right side of the first adjusting rod (19). A second moving rod (23) is provided below the second slider (20). A support plate (24) is installed at the lower ends of the two second moving rods (23). The support plate (24) is slidably mounted with a bidirectional adjustment plate (29) at both the front and rear ends of its upper end. A support rod (31) is slidably installed from the upper end face to the lower end face of the middle part of the two bidirectional adjustment plates (29). A convex gear (33) is provided above the support rod (31), and a drive gear (39) is meshed on the outer side of the convex gear (33). A shock absorber rod (54) is slidably installed on the outer side of the baffle (17), and a caster wheel (55) is provided on the outer side of the shock absorber rod (54).

2. The balanced downhole crane with a front-end hydraulic auxiliary support frame according to claim 1, characterized in that: The base platform (1) is rotatably mounted with track assemblies (2) on both the front and rear sides. The base platform (1) is fixedly mounted with an engine assembly (3) on the right side. The engine assembly (3) is fixedly mounted with a rear leg support rod (4) on the right side. The base platform (1) is rotatably mounted with a rotating platform (5). The rotating platform (5) is fixedly mounted with dust covers (6) on both the front and rear sides. The upper inside of the two dust covers (6) is rotatably mounted with a boom (7). The right side of the boom (7) is rotatably mounted with telescopic rods (8). The lower end of the telescopic rods (8) is rotatably mounted on the upper surface of the rotating platform (5). The boom (7) is slidably mounted with a fork rod (9) from the inside to the outside. The fork rod (10) is mounted on the outside of the fork rod (9).

3. A balanced downhole crane with a front-end hydraulic auxiliary support frame according to claim 1, characterized in that: A first sliding groove (11) is provided on the inner side wall of the left side of the base platform (1). A first telescopic pump (13) is fixedly installed inside the base platform (1). A movable mounting block (15) is fixedly installed on the telescopic rod of the first telescopic pump (13). A first slider (14) is fixedly installed at the front and rear ends of the right side of the movable mounting block (15). The first slider (14) is slidably installed inside the first sliding groove (11).

4. A balanced downhole crane with a front-end hydraulic auxiliary support frame according to claim 1, characterized in that: The upper end face to the interior and the lower end face to the interior of the movable mounting block (15) are recessed structures. A baffle (17) is fixedly installed on one side of the movable mounting block (15). A U-shaped buckle (18) is fixedly installed at the upper right corner of the baffle (17). A first adjusting rod (19) is rotatably installed inside the U-shaped buckle (18). A second slider (20) is rotatably installed on the upper right side of the first adjusting rod (19). The second slider (20) is slidably installed inside the second slide groove (12). The second slide groove (12) is opened on the left side of the base platform (1). A flexible pad (56) is fixedly installed at the upper inside of the second slide groove (12).

5. A balanced downhole crane with a front-end hydraulic auxiliary support frame according to claim 4, characterized in that: The lower end face of the second slider (20) is fixedly installed with a first extrusion rod (21). The lower outer side of the first extrusion rod (21) is slidably installed with a first hydraulic cylinder (22). The lower end of the first hydraulic cylinder (22) is fixedly installed on the inner ground of the second slide groove (12). The inner side of the first hydraulic cylinder (22) and the lower outer side of the lower end are slidably installed with a second moving rod (23). The lower end of the second moving rod (23) extends to the outer side of the base platform (1). The lower ends of the two second moving rods (23) are fixedly installed with a support plate (24).

6. A balanced downhole crane with a front-end hydraulic auxiliary support frame according to claim 5, characterized in that: The upper end face of the support plate (24) is provided with a cavity groove (25). A dual-axis motor (26) is fixedly installed inside the cavity groove (25). The output shafts at both ends of the dual-axis motor (26) are fixedly installed with a first threaded rod (27). A third slider (28) is rotatably installed on the circumferential surface of the first threaded rod (27) and inside the cavity groove (25). A bidirectional adjustment plate (29) is rotatably installed on the circumferential surface of the two third sliders (28). The bidirectional adjustment plate (29) has a V-shaped structure, and the adjacent ends of the two bidirectional adjustment plates (29) are rotatably connected.

7. A balanced downhole crane with a front-end hydraulic auxiliary support frame according to claim 5, characterized in that: A second hydraulic cylinder (30) is fixedly installed on the upper and lower ends of the two bidirectional adjustment plates (29) at the position where they are rotatably connected. A support rod (31) is slidably installed on the inside of the second hydraulic cylinder (30) to the lower outer side. A third extrusion rod (32) is slidably installed on the inside of the second hydraulic cylinder (30) to the upper outer side. A convex gear (33) is rotatably installed on the upper outer side of the third extrusion rod (32). A fourth slider (34) is rotatably installed on the upper outer side of the convex gear (33). A convex limiting groove (35) with an arc structure is opened on one end of the fourth slider (34) to the other end. The convex limiting groove (35) and the convex gear (33) are slidably connected. A limiting rod (42) is installed between the outer side of the fourth slider (34) and the upper outer side of the second hydraulic cylinder (30). The fourth slider (34) is slidably installed inside the third sliding groove (16). The third sliding groove (16) is opened inside the movable mounting block (15).

8. A balanced downhole crane with a front-end hydraulic auxiliary support frame according to claim 1, characterized in that: A symmetrical fixing plate (36) is fixedly installed inside the upper groove of the movable mounting block (15). A spring (37) is fixedly installed on the upper surface of the two fixing plates (36). A rotating plate (38) is fixedly installed on the adjacent end of each spring (37). The upper end of the rotating plate (38) is rotatably installed on the adjacent end of the fixing plate (36). The lower end of the rotating plate (38) extends through the third slide groove (16) to the lower groove of the movable mounting block (15). A drive gear (39) is rotatably installed on the lower end of the rotating plate (38). A chain (41) is rotatably installed on the outer side of the drive gear (39). A forward and reverse motor (40) is rotatably installed on the other end of the chain (41). The forward and reverse motor (40) is fixedly installed in the middle of the rotating plate (38). The drive gear (39) and the adjacent convex gear (33) mesh with each other.

9. A balanced downhole crane with a front-end hydraulic auxiliary support frame according to claim 1, characterized in that: Sliding rods (43) are fixedly installed on the front and rear edges of the right side of the baffle (17). A second telescopic pump (44) is rotatably installed on the circumferential surface of the upper sliding rod (43). A flooring plate (47) is rotatably installed on the telescopic rod of the second telescopic pump (44). A sliding plate (46) is rotatably installed on the upper part of the flooring plate (47). A cavity plate (45) is slidably installed on the outer side of one inner end of the sliding plate (46). One inner end of the cavity plate (45) is rotatably installed on the circumferential surface of the adjacent lower sliding rod (43).

10. A balanced downhole crane with a front-end hydraulic auxiliary support frame according to claim 1, characterized in that: The upper end of the baffle (17) is fixedly installed with symmetrical uprights (48). The left side of the uprights (48) and the left side of the baffle (17) are provided with convex grooves (49). The upper end of the uprights (48) is fixedly installed with a servo motor (50). The output shaft of the servo motor (50) is fixedly installed with a second threaded rod (51). The second threaded rod (51) extends into the interior of the corresponding convex groove (49). The circumferential surface of the second threaded rod (51) is threadedly rotatably installed with a symmetrical fifth slider (52). The outer side of the fifth slider (52) is rotatably installed with a sliding cavity rod (53). The lower end of the sliding cavity rod (53) is rotatably installed with a shock absorber rod (54). The lower end of the shock absorber rod (54) is rotatably installed with a universal wheel (55).

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