Clamp for producing and processing automobile crane counterweight block

Abstract

The application discloses a clamp for automobile crane counterweight production and processing, and relates to the technical field of workpiece processing and clamping, which comprises a metal ground mat, a polishing machine set, a hoisting component and a counterweight, wherein the hoisting component comprises a gantry fixedly installed on the metal ground mat, the gantry is installed with a clamping machine set, a runway machine set is installed between the clamping machine set and the gantry, the runway machine set is composed of a horizontal moving module and a lifting module and is used for driving the clamping machine set to move and lift, the clamping machine set is composed of a connecting plate, a main clamping module and an auxiliary clamping module, the connecting plate is connected with the lifting module through a lifting frame, the main clamping module provides a lateral clamping force for the counterweight, and the auxiliary clamping module provides a bottom support for the counterweight. The clamp can effectively improve the stability of the counterweight during hoisting, reduce the clamping force on the two sides of the counterweight and reduce the probability of the internal concrete of the counterweight being extruded and broken.

Description

Technical Field

[0001] This invention relates to the field of workpiece processing and clamping technology, and in particular to a clamping fixture for the production and processing of counterweights for truck cranes. Background Technology

[0002] As a commonly used heavy lifting equipment in engineering construction, the counterweight of a truck crane is a core component that ensures the stability of the equipment during operation. During the production and processing, the counterweight needs to go through multiple processes such as casting, grinding, drilling, welding, and painting. The transfer between each process and the positioning and lifting within each process place extremely high demands on the reliability, safety, and efficiency of the fixtures.

[0003] Currently, the clamps used in the processing and hoisting of counterweights are mostly general-purpose lifting tools, such as wire rope slings, chain slings, and ordinary hook clamps. Publication number CN106429821B discloses a brick blank hoisting clamp, which includes a main frame. Vertical shafts and column supports are respectively set on the left and right sides of the upper part of the main frame. A lifting beam that can slide longitudinally along the vertical shaft is set on the upper part of the column support. Multiple pairs of load-bearing arms are symmetrically hinged to the main frame through bearing seats. The lower ends of the front load-bearing arms and the lower ends of the rear load-bearing arms are respectively connected to clamps. The upper ends of the load-bearing arms are higher than the lifting beam. A support rod is connected between the upper end of each load-bearing arm and the lifting beam. The support rod is connected to the load-bearing arm and the lifting beam through a pin. A hook-up mechanism is set between the lifting beam and the main frame.

[0004] The aforementioned brick lifting clamp utilizes the lever principle to operate the lifting beam, thereby tightening and loosening the two clamping plates. The symmetrical front and rear lever arms transmit tightening force while also providing support and restraint, making it particularly suitable for lifting square-shaped bricks. A hooking mechanism is also included; a single lifting action connects the upper and lower components of the hooking mechanism, opening the clamping plates. The next lifting action disengages the upper and lower components, clamping the plates. A single operator of a forklift or crane can complete the lifting operation. The pin holes connecting the lever arms and support rods, and / or the lifting beam and support rods, are elongated. These elongated pin holes allow the support rods to be partially de-tightened during the lifting and lowering of the hooking mechanism, facilitating smooth connection and disengagement.

[0005] However, in practical use, the aforementioned brick lifting clamps and existing clamps have the following characteristics: the counterweight or the bottom of the brick is in contact with the ground, and the clamp holds the counterweight or brick on its side. The counterweight or brick moves by friction between the clamp and the counterweight or brick. During the movement, the clamping force needs to be maintained at all times. This clamping force is too great, which may cause the concrete inside the brick or counterweight to crack, affecting the integrity of the brick or counterweight. During the movement, the clamp may vibrate due to inertia or sway, which will also affect the stability of the clamping. In addition, the side of the counterweight or brick is not smooth and has protrusions. This will result in a small contact area when the clamp is used, making it difficult to clamp stably and increasing the probability of subsequent detachment.

[0006] Therefore, a new type of fixture for the production and processing of truck crane counterweights can be adopted to overcome the shortcomings of the existing technology. Summary of the Invention

[0007] The purpose of this invention is to solve the problems in the prior art where excessive clamping force leads to the cracking of the concrete inside the counterweight and the vibration of the clamping fixture has a significant impact on the clamping stability. Therefore, this invention proposes a clamping fixture for the production and processing of counterweights for truck cranes.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A fixture for manufacturing and processing counterweights for truck cranes includes a metal floor mat and a polishing unit, as well as lifting components and counterweights.

[0010] The hoisting component includes a gantry frame fixedly installed on a metal floor mat, a clamping unit installed on the gantry frame, and a runway unit installed between the clamping unit and the gantry frame. The runway unit consists of a horizontal moving module and a lifting module, which are used to drive the clamping unit to move and lift.

[0011] The clamping unit consists of a connecting plate, a main clamping module, and an auxiliary clamping module. The connecting plate is connected to the lifting module via a lifting frame. The main clamping module provides lateral clamping force for the counterweight, and the auxiliary clamping module provides bottom support for the counterweight.

[0012] Preferably, the polishing unit includes a machine tool and a robotic arm polishing module for polishing the surface of the counterweight.

[0013] Preferably, the main clamping module includes a main frame fixedly mounted on a connecting plate, two sets of side frames rotatably mounted on the main frame, each set of side frames consisting of multiple claw frames, with each pair of adjacent claw frames fixedly connected by a connecting rod, the two connecting rods being located at the upper end of the corresponding side frame, multiple hydraulic rods rotatably mounted on the connecting plate, each hydraulic rod having a rotatable connection between its telescopic end and the corresponding connecting rod, and two sets of auxiliary clamping modules, each mounted at the lower end of the corresponding side frame.

[0014] Preferably, multiple hooks are fixedly installed on the connecting plate, and a fixing ring is fixedly installed on both sides of the lifting frame. Each hook is connected to the corresponding fixing ring by a taut steel wire rope.

[0015] Preferably, the auxiliary clamp module includes a rotating rod rotatably mounted on multiple claw frames, and multiple auxiliary frames are fixedly mounted on the rotating rod. Multiple sets of force relief mechanisms, a set of climbing mechanisms, and a set of support mechanisms are jointly mounted on the multiple auxiliary frames.

[0016] Preferably, the climbing mechanism includes a rotating shaft mounted on the top of multiple auxiliary frames via multiple one-way bearings, multiple rubber wheels fixedly mounted on the rotating shaft, a disc motor fixedly mounted on the auxiliary frame, the drive end of the disc motor being fixedly connected to the rotating shaft, and a pressure-applying structure cooperating with the rotating shaft mounted on the auxiliary frame.

[0017] Preferably, the pressure-applying structure includes a fixed frame that is fixedly installed between the two intermediate auxiliary frames, and a pneumatic telescopic rod is rotatably installed on the fixed frame. The telescopic end of the pneumatic telescopic rod is rotatably connected to the rotating shaft.

[0018] Preferably, the support mechanism includes a shaft tube rotatably mounted on the bottom of multiple auxiliary frames via bearings, and multiple support blocks that cooperate with counterweights are fixedly mounted on the shaft tube, wherein two of the outermost auxiliary frames are equipped with angle adjustment structures that cooperate with the shaft tube.

[0019] Preferably, the angle adjustment structure includes two incomplete toothed rings fixedly installed on the two side auxiliary frames respectively, and a gear that meshes with the corresponding incomplete toothed ring is fixedly installed at both ends of the shaft tube.

[0020] Preferably, the stress relief mechanism includes a fixed plate fixedly installed between two adjacent auxiliary frames, and a plurality of elastic telescopic rods are fixedly installed on the fixed plate. Each elastic telescopic rod has a metal cone block that cooperates with the counterweight fixedly installed at its telescopic end.

[0021] Compared with existing technologies, the advantages of this invention are:

[0022] 1. When this clamping fixture for the production and processing of counterweight blocks for truck cranes clamps and lifts the counterweight blocks, it uses a rotatable rubber wheel to abut against the counterweight blocks. The rotation of the rubber wheel is used to adjust the clamping position of the counterweight blocks, ensuring sufficient clamping contact area and effectively avoiding unstable clamping due to insufficient contact area.

[0023] 2. When the clamp for manufacturing and processing the counterweight of this truck crane is used to clamp and lift the counterweight, it is equipped with a one-way bearing to prevent the rubber wheel from reversing, thereby limiting the rubber wheel. When the disc motor stops operating, the one-way rotation mechanism of the one-way bearing clamps the counterweight and transmits the force of the rubber wheel reversing to the one-way bearing, preventing the disc motor drive end from being stressed and protecting the disc motor.

[0024] 3. When the counterweight block is clamped and lifted by this truck crane, the bottom of the counterweight block is supported by a rotatable support block. After support, the pressure between the rubber wheel and the side of the counterweight block is reduced by the pneumatic telescopic rod. This not only protects the side of the counterweight block, but also avoids the risk of the counterweight block slipping during the lifting process, making the lifting more stable.

[0025] 4. When the counterweight block of this truck crane is clamped and lifted, the fixture uses an elastic telescopic rod and a metal cone to limit the movement of the counterweight block. When the rubber wheel moves the counterweight block, the force-bearing area of ​​the counterweight block is increased, thus distributing the force on the counterweight block. This not only protects the counterweight block but also improves the stability of the counterweight block's movement under the action of the rubber wheel. Furthermore, when the support block supports the counterweight block, the direction of the metal cone block changes, and the metal cone block will generate an upward oblique supporting force on the counterweight block, distributing the force on the support block, reducing the force on the support block, and extending the service life of the support block. Attached Figure Description

[0026] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0027] Figure 1 This is a schematic diagram of the structure of a fixture for manufacturing and processing counterweights for truck cranes, as proposed in this invention.

[0028] Figure 2 for Figure 1 Detailed schematic diagram of the structure after rotation at a certain angle;

[0029] Figure 3 for Figure 1 Detailed enlarged structural diagram of the medium-sized polishing unit;

[0030] Figure 4 for Figure 1 Enlarged structural schematic diagram of the mid-runway generator unit and the clamping unit;

[0031] Figure 5 for Figure 4 Detailed schematic diagram of the structure after rotation at a certain angle;

[0032] Figure 6 for Figure 4 Enlarged structural schematic diagram of the clamping unit and counterweight;

[0033] Figure 7 for Figure 6 Detailed schematic diagram of the frontal planar structure;

[0034] Figure 8 for Figure 6 Detailed schematic diagram of the structure after removing the counterweight;

[0035] Figure 9 for Figure 8 Detailed schematic diagram of the structure after rotation at a certain angle;

[0036] Figure 10 for Figure 8 Enlarged schematic diagram of one side of the claw frame and other components on the claw frame;

[0037] Figure 11 for Figure 10 Detailed schematic diagram of the structure after rotation at a certain angle;

[0038] Figure 12 for Figure 11 Enlarged schematic diagram of the structure after removing the claw frame;

[0039] Figure 13 for Figure 12 Detailed schematic diagram of the side view of the structural plan;

[0040] Figure 14 for Figure 12 A detailed schematic diagram of the enlarged structure of one of the pressure relief mechanisms.

[0041] In the diagram: 1 Metal floor mat, 2 Gantry frame, 3 Polishing unit, 4 Runway unit, 5 Clamping unit, 6 Machine tool, 7 Robot arm polishing module, 8 Horizontal movement module, 9 Lifting module, 10 Counterweight, 11 Lifting frame, 12 Connecting plate, 13 Main frame, 14 Claw frame, 15 Hook, 16 Hydraulic rod, 17 Auxiliary clamping module, 18 Auxiliary frame, 19 Rotating shaft, 20 Rubber wheel, 21 One-way bearing, 22 Pneumatic telescopic rod, 23 Disc motor, 24 Incomplete gear ring, 25 Gear, 26 Shaft tube, 27 Support block, 28 Pressure relief mechanism, 29 Rotating rod, 30 Fixed plate, 31 Elastic telescopic rod, 32 Metal cone block. Detailed Implementation

[0042] 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.

[0043] Example 1: Refer to Figures 1-5 A jig for manufacturing and processing counterweight blocks for truck cranes includes a metal floor mat 1 and a polishing unit 3, as well as a lifting component and a counterweight block 10.

[0044] Polishing unit 3 includes machine tool 6 and robotic arm polishing module 7, used to polish the surface of counterweight 10;

[0045] The counterweight 10 is placed on the machine tool 6, and the surface of the counterweight 10 on the machine tool 6 is polished by the robotic arm polishing module 7.

[0046] The robotic arm polishing module 7 is an existing robotic arm polishing device, and its specific operation and structure will not be described here.

[0047] The hoisting components include a gantry frame 2 fixedly installed on a metal floor mat 1, and a clamping unit 5 is installed on the gantry frame 2;

[0048] The function of the metal mat 1 is to provide storage space for the counterweight 10, separate it from the ground, effectively prevent dust from adhering to the counterweight 10, and also to distinguish the counterweight 10 to be polished from other counterweights.

[0049] A runway unit 4 is installed between the clamping unit 5 and the gantry 2. The runway unit 4 consists of a horizontal moving module 8 and a lifting module 9, which are used to drive the clamping unit 5 to move and lift.

[0050] Both the horizontal moving module 8 and the lifting module 9 are existing common mechanisms that work in conjunction with the gantry 2. The horizontal moving module 8 drives the lifting module 9 to move horizontally back and forth, and the lifting module 9 drives the clamping unit 5 to move up and down back and forth. Since these are existing common mechanisms, they will not be described in detail here.

[0051] Example 2: This example differs from Example 1 in that: (Refer to...) Figures 6-14 The clamping unit 5 consists of two parts: a connecting plate 12, a main clamping module, and an auxiliary clamping module 17. The connecting plate 12 is connected to the lifting module 9 through a lifting frame 11. The main clamping module provides lateral clamping force for the counterweight 10, and the auxiliary clamping module 17 provides bottom support for the counterweight 10.

[0052] Multiple hooks 15 are fixedly installed on the connecting plate 12, and a fixing ring is fixedly installed on both sides of the lifting frame 11. Each hook 15 is connected to the corresponding fixing ring with a taut steel wire rope.

[0053] like Figure 6 As shown, the lifting frame 11 and the connecting plate 12 are rotatably connected by a rod. Under normal conditions, the connecting plate 12 remains horizontal. Once the counterweight 10 is clamped, the center of gravity of the counterweight 10 may shift from the center of gravity of the connecting plate 12, causing the connecting plate 12 to tilt. Therefore, a steel wire rope is used to pull the connecting plate 12 to keep it horizontal. At the same time, the force on the rod can be distributed, reducing the force on the rod, resulting in a longer service life and higher stability.

[0054] The main clamping module includes a main frame 13 fixedly mounted on the connecting plate 12. Two sets of side frames are rotatably mounted on the main frame 13. Each set of side frames consists of multiple claw frames 14. Two adjacent claw frames 14 in each set are fixedly connected by a connecting rod. The two connecting rods are located at the upper end of the corresponding side frame. Multiple hydraulic rods 16 are rotatably mounted on the connecting plate 12. The telescopic end of each hydraulic rod 16 is rotatably connected to the corresponding connecting rod. There are two sets of auxiliary clamping modules 17, which are respectively installed at the lower end of the corresponding side frames.

[0055] The clamping unit 5 is moved by the horizontal moving module 8 and the lifting module 9 to bring the bottom of the claw frame 14 close to the bottom of the counterweight 10, but not in contact with the metal floor mat 1. Then the hydraulic rod 16 is activated. The extension end of the hydraulic rod 16 extends, which will drive the claw frame 14 to rotate around the main frame 13. At this time, the lower end of the claw frame 14 moves to the side that is closer to each other until the auxiliary clamping module 17 abuts against the side of the counterweight 10, thus completing the initial clamping of the counterweight 10.

[0056] A linkage gear rack is installed between the two sets of side frames. The linkage gear rack can drive the side frames on both sides to move in the same direction at the same time. This ensures that the side frames on both sides move the same distance, avoids the occurrence of clamping eccentricity, and keeps the center of gravity of the counterweight 10 and the center of gravity of the connecting plate 12 in balance, which has the effect of improving stability.

[0057] The auxiliary clamp module 17 includes a rotating rod 29 rotatably mounted on multiple claw frames 14. Multiple auxiliary frames 18 are fixedly mounted on the rotating rod 29. Multiple sets of force relief mechanisms 28, a climbing mechanism and a support mechanism are jointly mounted on the multiple auxiliary frames 18.

[0058] The climbing mechanism includes a rotating shaft 19 mounted on top of multiple auxiliary frames 18 via multiple one-way bearings 21. Multiple rubber wheels 20 are fixedly mounted on the rotating shaft 19. A disc motor 23 is fixedly mounted on the auxiliary frame 18. The drive end of the disc motor 23 is fixedly connected to the rotating shaft 19. A pressure-applying structure that cooperates with the rotating shaft 19 is mounted on the auxiliary frame 18.

[0059] By setting a one-way bearing 21, the rubber wheel 20 can be prevented from reversing, thereby limiting the rubber wheel 20. When the disc motor 23 stops operating, the counterweight 10 is clamped by the one-way rotation mechanism of the one-way bearing 21, and the force of the rubber wheel 20 reversing is transmitted to the one-way bearing 21, preventing the drive end of the disc motor 23 from being subjected to force, thus protecting the disc motor 23.

[0060] The pressure-applying structure includes a fixed frame that is fixedly installed between the two intermediate auxiliary frames 18. A pneumatic telescopic rod 22 is rotatably installed on the fixed frame. The telescopic end of the pneumatic telescopic rod 22 is rotatably connected to the rotating shaft 19.

[0061] The rotation of the rubber wheel 20 is used to adjust the clamping position of the counterweight 10, ensuring that the clamping contact area is sufficient, which can effectively avoid the occurrence of unstable clamping due to insufficient contact area.

[0062] When the rubber wheel 20 on the auxiliary clamp module 17 abuts against the side of the counterweight 10, the disc motor 23 is started. The drive end of the disc motor 23 rotates, causing the rotating shaft 19 fixedly connected to it to rotate, thereby driving the rubber wheel 20 to rotate. The rubber wheels 20 on the two side frames rotate in opposite directions. The rotation of the rubber wheel 20 will cause the counterweight 10 to move upward, so that the counterweight 10 is separated from the metal floor mat 1. (It should be noted that the extension of the hydraulic rod 16 should be adjusted as needed to ensure that the pressure between the rubber wheel 20 and the counterweight 10 can provide sufficient friction to drive the counterweight 10 to rise.) At this time, the claw frame 14 is in an inclined state, and the support mechanism does not contact the counterweight 10.

[0063] The support mechanism includes a shaft tube 26 rotatably mounted on the bottom of multiple auxiliary frames 18 via bearings. Multiple support blocks 27 that cooperate with counterweight blocks 10 are fixedly mounted on the shaft tube 26. An angle adjustment structure that cooperates with the shaft tube 26 is installed on the two outermost auxiliary frames 18.

[0064] The angle adjustment structure includes two incomplete toothed rings 24 that are fixedly installed on the two auxiliary frames 18 respectively, and a gear 25 that meshes with the corresponding incomplete toothed ring 24 is fixedly installed at both ends of the shaft tube 26.

[0065] After the counterweight 10 rises to a certain height (this height is obtained through testing; the counterweight 10 moves upward until the distance between its bottom and the bottom of the support mechanism is between 10-13 cm), the pneumatic telescopic rod 22 is activated. The telescopic end of the pneumatic telescopic rod 22 shortens, which drives the rotating shaft 19 to move, thereby causing the auxiliary frame 18 to rotate around the rotating rod 29. Since the rotation of the rotating rod 29 will drive the rubber wheel 20 to rotate, and the rubber wheel 20 needs to maintain sufficient pressure against the counterweight 10, when the pneumatic telescopic rod 22 is activated, the hydraulic rod 16 also needs to drive the claw frame 14 to move the lower end of the claw frame 14 further towards the side closer to the counterweight 10, so as to ensure sufficient pressure between the rubber wheel 20 and the counterweight 10.

[0066] As the auxiliary frame 18 rotates, the bottom of the auxiliary frame 18 moves closer to the counterweight 10. During the movement, the meshing between the gear 25 and the incomplete gear ring 24 drives the gear 25 to rotate. The rotation of the gear 25 drives the shaft tube 26 to rotate, thereby driving the support block 27 to rotate, so that the support block 27 changes from its original inclined state to a horizontal state (the support block 27 extends into the bottom of the counterweight 10). Then, the hydraulic rod 16 is retracted appropriately. At this time, the rubber wheel 20 retracts and disengages from the counterweight 10. Since the process is slow, the counterweight 10 does not fall off the rubber wheel 20, but slides down slowly until the counterweight 10 slides onto the support block 27. The hydraulic rod 16 is then stopped (because the support block 27 extends into the bottom of the counterweight 10, and the rubber wheel 20 abuts against the side of the counterweight 10, the counterweight 10 will definitely fall onto the support block 27 after the rubber wheel 20 separates from the counterweight 10).

[0067] After the counterweight 10 falls onto the support block 27, the runway unit 4 is started to drive the clamping unit 5 to move and lift the counterweight 10 onto the polishing unit 3. At this time, there are no contact points on both sides of the counterweight 10, and it is supported by the support block 27 alone. Therefore, there is a risk of falling during the lifting process. So after the counterweight 10 falls onto the support block 27, the telescopic end of the hydraulic rod 16 is extended again so that the rubber wheel 20 abuts against the side of the counterweight 10 to fix and limit the counterweight 10 and prevent it from falling.

[0068] During the hoisting process, the rubber wheel 20 activates its fixed limit function, and the support block 27 activates its function of lifting the counterweight block 10. Therefore, the side of the counterweight block 10 is subjected to little force and will not affect the concrete inside the counterweight block 10.

[0069] The pressure relief mechanism 28 includes a fixed plate 30 fixedly installed between two adjacent auxiliary frames 18. Multiple elastic telescopic rods 31 are fixedly installed on the fixed plate 30. Each elastic telescopic rod 31 has a metal cone block 32 that cooperates with the counterweight block 10 fixedly installed at its telescopic end.

[0070] like Figure 13As shown, when the rubber wheel 20 abuts against the counterweight 10, the elastic telescopic rod 31 tilts downward. Under the elastic force of the elastic telescopic rod 31, the counterweight 10 will be clamped and limited, making the upward movement of the counterweight 10 more stable and reducing the probability of slippage between the counterweight 10 and the rubber wheel 20.

[0071] After the support block 27 abuts against the counterweight block 10, the auxiliary frame 18 rotates clockwise by a certain angle, causing the elastic telescopic rod 31 to eventually tilt upwards. During the transition, the metal cone block 32 abuts against the side of the counterweight block 10, compressing the elastic telescopic rod 31. After the elastic telescopic rod 31 tilts upwards, the metal cone block 32 will generate an upward thrust on the counterweight block 10. This thrust will be decomposed into a horizontal clamping force and a vertical upward supporting force. The clamping force is used to stabilize the counterweight block 10, and the supporting force is used to support the counterweight block 10 in conjunction with the support block 27.

[0072] By setting the elastic telescopic rod 31 and the metal cone block 32 to limit the counterweight 10, when the rubber wheel 20 drives the counterweight 10 to move, the force-bearing area of ​​the counterweight 10 is increased, so that the force on the counterweight 10 is dispersed. This not only protects the counterweight 10, but also improves the stability of the counterweight 10 moving under the action of the rubber wheel 20, and extends the service life of the support block 27.

[0073] The specific operating steps of this device are as follows:

[0074] The clamping unit 5 is moved by the horizontal moving module 8 and the lifting module 9 so that the bottom of the claw frame 14 is close to the bottom of the counterweight 10, but does not contact the metal floor mat 1. Then the hydraulic rod 16 is activated. The extension end of the hydraulic rod 16 extends, which will drive the claw frame 14 to rotate around the main frame 13. At this time, the lower end of the claw frame 14 moves to the side that is closer to each other until the auxiliary clamping module 17 abuts against the side of the counterweight 10, thus completing the initial clamping of the counterweight 10.

[0075] When the rubber wheel 20 on the auxiliary clamp module 17 abuts against the side of the counterweight 10, the disc motor 23 is started. The drive end of the disc motor 23 rotates, causing the rotating shaft 19 fixedly connected to it to rotate, thereby driving the rubber wheel 20 to rotate. The rubber wheels 20 on the two side frames rotate in opposite directions. The rotation of the rubber wheel 20 will cause the counterweight 10 to move upward, so that the counterweight 10 is separated from the metal floor mat 1. At this time, the claw frame 14 is in an inclined state, and the support mechanism does not contact the counterweight 10.

[0076] After the counterweight 10 rises to a certain height, the pneumatic telescopic rod 22 is activated. The telescopic end of the pneumatic telescopic rod 22 shortens, which drives the rotating shaft 19 to move, thereby causing the auxiliary frame 18 to rotate around the rotating rod 29. At the same time as the pneumatic telescopic rod 22 is activated, the hydraulic rod 16 is also needed to drive the claw frame 14, so that the lower end of the claw frame 14 continues to move closer to the counterweight 10, thereby ensuring sufficient pressure between the rubber wheel 20 and the counterweight 10.

[0077] As the auxiliary frame 18 rotates, the bottom of the auxiliary frame 18 moves towards the side closer to the counterweight 10. During the movement, the meshing between the gear 25 and the incomplete gear ring 24 will drive the gear 25 to rotate. The rotation of the gear 25 will drive the shaft tube 26 to rotate, thereby driving the support block 27 to rotate, so that the support block 27 changes from its original inclined state to a horizontal state. Then, the hydraulic rod 16 is appropriately retracted. At this time, the rubber wheel 20 retracts and will disengage from the counterweight 10. Since the process is slow, the counterweight 10 does not fall off the rubber wheel 20, but slowly slides down until the counterweight 10 slides onto the support block 27, and the hydraulic rod 16 stops.

[0078] After the counterweight 10 falls onto the support block 27, the runway unit 4 is started to drive the clamping unit 5 to move and lift the counterweight 10 onto the polishing unit 3. After the counterweight 10 falls onto the support block 27, the telescopic end of the hydraulic rod 16 is extended again so that the rubber wheel 20 abuts against the side of the counterweight 10 to fix and limit the counterweight 10 and prevent it from falling.

[0079] After the support block 27 abuts against the counterweight block 10, the auxiliary frame 18 rotates clockwise by a certain angle, causing the elastic telescopic rod 31 to eventually tilt upwards. During this transition, the metal cone block 32 abuts against the side of the counterweight block 10, compressing the elastic telescopic rod 31. After the elastic telescopic rod 31 tilts upwards, the metal cone block 32 generates an upward thrust on the counterweight block 10. This thrust is decomposed into a horizontal clamping force and a vertical upward supporting force. The clamping force is used to stabilize the counterweight block 10, while the supporting force is used to support the counterweight block 10 in conjunction with the support block 27.

[0080] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A fixture for manufacturing and processing counterweights for truck cranes, comprising a metal floor mat (1) and a polishing unit (3), characterized in that, It also includes hoisting components and counterweights (10); The hoisting components include a gantry (2) fixedly installed on a metal mat (1), a clamping unit (5) installed on the gantry (2), and a runway unit (4) installed between the clamping unit (5) and the gantry (2). The runway unit (4) consists of a horizontal moving module (8) and a lifting module (9), which is used to drive the clamping unit (5) to move and lift. The clamping unit (5) consists of two parts: a connecting plate (12), a main clamping module, and an auxiliary clamping module (17). The connecting plate (12) is connected to the lifting module (9) through a lifting frame (11). The main clamping module provides lateral clamping force to the counterweight (10), and the auxiliary clamping module (17) provides bottom support to the counterweight (10). The main clamping module includes a main frame (13) fixedly installed on the connecting plate (12). Two sets of side frames are rotatably installed on the main frame (13). Each set of side frames consists of multiple claw frames (14). Two adjacent claw frames (14) in each set are fixedly connected by a connecting rod. The two connecting rods are located at the upper end of the corresponding side frame. Multiple hydraulic rods (16) are rotatably installed on the connecting plate (12). The telescopic end of each hydraulic rod (16) is rotatably connected to the corresponding connecting rod. There are two sets of auxiliary clamping modules (17), which are installed at the lower end of the corresponding side frames. The auxiliary clamp module (17) includes a rotating rod (29) rotatably mounted on multiple claw frames (14), and multiple auxiliary frames (18) are fixedly mounted on the rotating rod (29). Multiple sets of force relief mechanisms (28), a set of climbing mechanisms and a set of support mechanisms are jointly mounted on the multiple auxiliary frames (18). The climbing mechanism includes a rotating shaft (19) mounted on the top of multiple auxiliary frames (18) via multiple one-way bearings (21), multiple rubber wheels (20) fixedly mounted on the rotating shaft (19), a disc motor (23) fixedly mounted on the auxiliary frame (18), the drive end of the disc motor (23) being fixedly connected to the rotating shaft (19), and a pressure-applying structure cooperating with the rotating shaft (19) mounted on the auxiliary frame (18). The support mechanism includes a shaft tube (26) rotatably mounted on the bottom of multiple auxiliary frames (18) via bearings. Multiple support blocks (27) that cooperate with counterweights (10) are fixedly mounted on the shaft tube (26). Two of the outermost auxiliary frames (18) are equipped with angle adjustment structures that cooperate with the shaft tube (26). The pressure relief mechanism (28) includes a fixed plate (30) fixedly installed between two adjacent auxiliary frames (18). Multiple elastic telescopic rods (31) are fixedly installed on the fixed plate (30). Each elastic telescopic rod (31) has a metal cone (32) that cooperates with the counterweight (10) fixedly installed at its telescopic end.

2. The clamp for producing and processing the automobile crane counterweight according to claim 1, characterized in that, The polishing unit (3) includes a machine tool (6) and a robotic arm polishing module (7) for polishing the surface of the counterweight (10).

3. The clamp for producing and processing the automobile crane counterweight according to claim 1, characterized in that, Multiple hooks (15) are fixedly installed on the connecting plate (12), and a fixing ring is fixedly installed on both sides of the lifting frame (11). Each hook (15) is connected to the corresponding fixing ring by a taut steel wire rope.

4. The clamp for producing and processing the automobile crane counterweight according to claim 1, characterized in that, The pressure-applying structure includes a fixed frame that is fixedly installed between the two intermediate auxiliary frames (18). A pneumatic telescopic rod (22) is rotatably installed on the fixed frame. The telescopic end of the pneumatic telescopic rod (22) is rotatably connected to the rotating shaft (19).

5. The clamp for processing of automobile-hoist counterweight according to claim 1, characterized in that, The angle adjustment structure includes two incomplete toothed rings (24) fixedly installed on the two side auxiliary frames (18), and a gear (25) that meshes with the corresponding incomplete toothed ring (24) is fixedly installed at both ends of the shaft tube (26).

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