Counterweight device for crane

Abstract

The invention relates to the technical field of hoisting equipment, and discloses a counterweight device for a crane, which comprises a welding assembly, the welding assembly comprises a welding base, a connecting frame is welded on the inner wall of the welding base, and a welding plate is welded on the outer surface of the connecting frame. The worm is driven by the servo motor to rotate, the worm gear can be driven to rotate in the first mounting rod due to the fact that the worm gear is meshed with the worm gear, the bevel gear is driven to rotate in the second mounting rod due to the fact that the worm gear is meshed with the bevel gear, the driving fluted disc is ensured to rotate, and due to the fact that the driving fluted disc is meshed with the rack, the driving fluted disc is driven to rotate. The auxiliary frame assembly can be driven to ascend and descend under limiting of the pressure-bearing type high-strength bolt, the balancing weight can be conveniently installed in the device, when the balancing weight needs to be added, the adding operation of the balancing weight can be conveniently achieved, and it is ensured that the whole balance weight device can stably and effectively work under different balance weight requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting equipment, and in particular to a counterweight device for a crane. Background Art

[0002] In construction projects, as the height and scale of buildings continue to increase, heavier building materials (such as steel beams, large prefabricated components, etc.) need to be lifted, and the lifting capacity and stability requirements of cranes are constantly increasing. This counterweight device can effectively increase the stability of the crane and ensure the safety and efficiency of the lifting operation; However, there are still many defects in the counterweight device in actual use. For example, the operation process of the existing counterweight device is very complicated when the counterweight needs to be adjusted, involving multiple steps and the coordinated operation of many parts, which requires the operator to have high professional skills and rich operating experience. At the same time, the existing counterweight device is lacking in structural strength, which makes it easy to deform the structure when it is subjected to a large load for a long time. Therefore, it is necessary to design a counterweight device for cranes. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a counterweight device for a crane.

[0004] The present invention is implemented by the following technical scheme: a counterweight device for a crane, comprising a welding assembly, the welding assembly comprising a welding base, a connecting frame welded to the inner wall of the welding base, a welding plate welded to the outer surface of the connecting frame, and further comprising: A main body frame assembly, the main body frame assembly comprising a main body first mounting frame, the main body first mounting frame is welded to a main body second mounting frame through a connecting plate, a pressure-bearing high-strength bolt is fixedly installed at the bottom of the main body first mounting frame, a first bearing frame is welded to the bottom of the pressure-bearing high-strength bolt, and a first limiting rod is fixedly installed on the top of the first bearing frame; The auxiliary frame assembly comprises a sliding seat, a second bearing frame is fixedly installed inside the sliding seat, and a second limiting rod is fixedly installed on the top of the second bearing frame.

[0005] As a further improvement of the above solution, a main body first mounting frame is welded to the bottom of the welding base, a limit cover is slidably installed inside the main body first mounting frame, and a limit seat is rotatably installed inside the main body first mounting frame.

[0006] Through the above technical scheme, the slidingly installed limit cover can be easily opened and closed, and can be flexibly opened and closed when installing or adjusting the counterweight block, thereby facilitating operation. The rotatably installed limit seat can be accurately rotated to the appropriate position when the counterweight block needs to be limited at the top, thereby achieving effective limiting of the limit cover and preventing it from being displaced during the operation of the device.

[0007] As a further improvement of the above solution, a second bearing plate is fixedly installed inside the first bearing frame, a first limiting rod is fixedly installed on the top of the second bearing plate, and a limiting plate is fixedly installed on the bottom of the second bearing plate.

[0008] Through the above technical solution, a second bearing plate is installed inside the first bearing frame, providing a platform for placing the counterweight block. The first limiting rod on the top of the second bearing plate can limit the counterweight block placed above it. When there are multiple groups of counterweight blocks, the first limiting rod can prevent them from shifting in the horizontal direction, ensuring that the counterweight blocks are neatly arranged in the device, thereby ensuring the stability of the center of gravity of the entire counterweight device.

[0009] As a further improvement of the above solution, a sliding seat is sleeved on the outer surface of the pressure-bearing high-strength bolt, a first support frame is fixedly installed on the bottom of the sliding seat, and an auxiliary first mounting frame is welded to the outer surface of the first support frame.

[0010] Through the above technical solution, the outer surface of the pressure-bearing high-strength bolt is sleeved with the sliding seat. This sleeve structure enables the sliding seat to move relatively along the pressure-bearing high-strength bolt. Since the pressure-bearing high-strength bolt is made of high-strength material, it can withstand greater pressure and provide stable support for the sliding seat during the movement of the auxiliary frame assembly.

[0011] As a further improvement of the above solution, a second supporting frame is fixedly installed inside the auxiliary first mounting frame, a second limiting rod is fixedly installed on the top of the second supporting frame, and an auxiliary second mounting frame is welded to one end of the second supporting frame away from the auxiliary first mounting frame.

[0012] Through the above technical solution, the second limiting rod on the top of the second load-bearing frame can limit the counterweight placed thereon, and work together with the first limiting rod to more accurately limit the position of the counterweight to prevent it from shaking or displacing during the operation of the device. The connection strength between the auxiliary first mounting frame and the auxiliary second mounting frame is enhanced by welding, making the structure of the entire auxiliary frame assembly more stable and able to better withstand the weight of the counterweight and various forces generated during the operation of the crane.

[0013] As a further improvement of the above solution, a second support frame is welded to the outer surface of the auxiliary second mounting frame, a slide groove is provided inside the second support frame, and a rack is provided inside the slide groove.

[0014] Through the above technical solution, when the driving gear disc rotates, the meshing action with the rack can be converted into linear motion, thereby driving the entire auxiliary frame assembly to perform lifting and other operations, and can convert rotational motion into linear motion, thereby realizing effective transmission between different parts of the device.

[0015] As a further improvement of the above solution, an adjustment component is fixedly mounted on the top of the first mounting frame of the main body, and the adjustment component includes a servo motor, and a worm is fixedly mounted on the output end of the servo motor.

[0016] Through the above technical solution, the servo motor in the adjustment assembly provides power for the movement of the entire counterweight device. The servo motor has the advantages of high precision and controllability, and can accurately control the output power according to actual needs, thereby achieving precise control of various components in the counterweight device (such as auxiliary frame components, etc.).

[0017] As a further improvement of the above solution, a first mounting rod is fixedly installed inside the first mounting frame of the main body, a worm wheel is rotatably installed inside the first mounting rod, and the worm wheel is meshed with the worm.

[0018] Through the above technical solution, this meshing structure realizes effective power transmission, transmitting the rotation of the worm to the worm wheel. At the same time, the first mounting rod provides rotation support and mounting position for the worm wheel, ensuring the stability of the worm wheel during rotation, thereby ensuring the smoothness of the entire transmission process.

[0019] As a further improvement of the above solution, a second mounting rod is fixedly mounted on the bottom of the first mounting frame of the main body, a helical gear is rotatably mounted inside the second mounting rod, and the helical gear is meshed with the worm gear.

[0020] Through the above technical solution, the helical gear meshes with the worm gear, and this structure further continues the transmission chain, transmitting the rotation of the worm gear to the helical gear. The second mounting rod provides a suitable installation and rotation environment for the helical gear, ensures the stability of the helical gear during the rotation process, and ensures that power can be effectively transmitted between various components.

[0021] As a further improvement of the above solution, connecting rods are fixedly installed on both sides of the bevel gear, and a driving gear plate is fixedly installed on the outer surface of the connecting rod, and the driving gear plate is meshed with the rack.

[0022] Through the above technical solution, the driving gear disc is meshed with the rack. This structural design converts the rotation of the bevel gear into the rotation of the driving gear disc, and then converts the rotational motion into linear motion through meshing with the rack, thereby ultimately realizing the lifting and lowering of the auxiliary frame assembly. The various components of the entire transmission chain cooperate with each other, from the power output of the servo motor to the final movement of the auxiliary frame assembly, thereby ensuring the normal operation of the entire counterweight device.

[0023] Compared with the prior art, the present invention has the following beneficial effects: The present invention drives the worm to rotate through a servo motor, and since the worm wheel is meshed with the worm wheel, the worm wheel can be driven to rotate in the first mounting rod, and then since the worm wheel and the bevel gear are in a meshing state, the bevel gear is driven to rotate in the second mounting rod, ensuring that the driving toothed disc is rotated, and since the driving toothed disc and the rack are in a meshing state, the auxiliary frame assembly can be driven to rise and fall under the limit of the pressure-bearing high-strength bolts, so that the counterweight block can be installed in the device conveniently, and when there is a need to increase the counterweight block, the operation of adding the counterweight block can also be conveniently implemented, ensuring that the entire counterweight device can work stably and effectively under different counterweight requirements.

[0024] The present invention drives the auxiliary frame assembly to rise and fall at the bottom of the main frame assembly through the drive of a servo motor. During this process, the sliding seat is always in a meshing state with the pressure-bearing high-strength bolts, which can generate sufficient friction and bite force. Since the pressure-bearing high-strength bolts are made of high-strength materials, they can withstand greater forces without plastic deformation when installing the counterweight block, thereby supporting the auxiliary frame assembly and ensuring the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the main frame assembly of the present invention; Figure 3 This is a schematic diagram of the structure of the first mounting frame of the main body of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement in the middle; Figure 5 This is a schematic diagram of the structure of the auxiliary frame assembly of the present invention; Figure 6 It is a schematic diagram of the overall side structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point B in the middle.

[0026] Description of main symbols: 1. Welding assembly; 101. Welding base; 102. Connecting frame; 103. Welding plate; 2. Main frame assembly; 201. Main first mounting frame; 202. Pressure-bearing high-strength bolts; 203. Connecting plate; 204. Main second mounting frame; 205. Limiting seat; 206. Limiting cover; 207. First bearing frame; 208. Second bearing plate; 209. First limiting rod; 210. Limiting plate; 3. Auxiliary frame assembly; 301. Sliding Seat; 302, first support frame; 303, auxiliary first mounting frame; 304, second support frame; 305, second limiting rod; 306, auxiliary second mounting frame; 307, second support frame; 308, slide groove; 309, rack; 4, adjustment assembly; 401, servo motor; 402, worm; 403, first mounting rod; 404, worm wheel; 405, second mounting rod; 406, bevel gear; 407, connecting rod; 408, driving gear disc. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. Example

[0028] Please combine Figure 1-7 A counterweight device for a crane in this embodiment includes a welding assembly 1, the welding assembly 1 includes a welding base 101, a connecting frame 102 is welded to the inner wall of the welding base 101, and a welding plate 103 is welded to the outer surface of the connecting frame 102, and further includes: The main frame assembly 2 includes a main body first mounting frame 201, the main body first mounting frame 201 is welded with a main body second mounting frame 204 through a connecting plate 203, a pressure-bearing high-strength bolt 202 is fixedly installed at the bottom of the main body first mounting frame 201, a first bearing frame 207 is welded at the bottom of the pressure-bearing high-strength bolt 202, and a first limiting rod 209 is fixedly installed at the top of the first bearing frame 207; The auxiliary frame assembly 3 includes a sliding seat 301 , a second bearing frame 304 is fixedly installed inside the sliding seat 301 , and a second limiting rod 305 is fixedly installed on the top of the second bearing frame 304 .

[0029] A main body first mounting frame 201 is welded to the bottom of the welding base 101 , a limit cover 206 is slidably installed inside the main body first mounting frame 201 , and a limit seat 205 is rotatably installed inside the main body first mounting frame 201 .

[0030] A second bearing plate 208 is fixedly installed inside the first bearing frame 207 , a first limiting rod 209 is fixedly installed on the top of the second bearing plate 208 , and a limiting plate 210 is fixedly installed on the bottom of the second bearing plate 208 .

[0031] By sliding the limit cover 206 out from the connecting plate 203, and then placing part of the counterweight on the top of the second supporting plate 208, and the counterweight is provided with a hole matching the first limit rod 209, the first limit rod 209 can be used to limit multiple groups of counterweights to avoid offset of multiple groups of counterweights. After placing part of the counterweight inside the main frame assembly 2, the limit cover 206 is installed in the connecting plate 203, and the limit seat 205 is closed to ensure the limitation of the top of the counterweight. The first supporting frame 207, the second mounting frame 204 of the main body and the first mounting frame 201 of the main body are installed by welding, which can enhance the overall strength of the device and ensure the stable installation of the counterweight.

[0032] The outer surface of the pressure-bearing high-strength bolt 202 is sleeved with a sliding seat 301 , the bottom of the sliding seat 301 is fixedly mounted with a first support frame 302 , and the outer surface of the first support frame 302 is welded with an auxiliary first mounting frame 303 .

[0033] A second support frame 304 is fixedly installed inside the auxiliary first mounting frame 303 , a second limiting rod 305 is fixedly installed on the top of the second support frame 304 , and an auxiliary second mounting frame 306 is welded to one end of the second support frame 304 away from the auxiliary first mounting frame 303 .

[0034] A second support frame 307 is welded to the outer surface of the auxiliary second mounting frame 306 , a slide groove 308 is provided inside the second support frame 307 , and a rack 309 is provided inside the slide groove 308 .

[0035] Driven by the servo motor 401, the auxiliary frame assembly 3 is driven to rise and fall at the bottom of the main frame assembly 2. During this process, the sliding seat 301 is always in meshing state with the pressure-bearing high-strength bolt 202, which can generate sufficient friction and bite force. Since the pressure-bearing high-strength bolt 202 is made of high-strength material, it can withstand greater force without plastic deformation when installing the counterweight block. The first support frame 302 at the bottom of the sliding seat 301 is installed with an auxiliary first mounting frame 303, thereby supporting the auxiliary frame assembly 3 and ensuring the stability of the device.

[0036] An adjusting assembly 4 is fixedly mounted on the top of the first mounting frame 201 of the main body. The adjusting assembly 4 includes a servo motor 401 . A worm 402 is fixedly mounted on the output end of the servo motor 401 .

[0037] A first mounting rod 403 is fixedly mounted inside the first mounting frame 201 of the main body, and a worm gear 404 is rotatably mounted inside the first mounting rod 403 , and the worm gear 404 is meshed with the worm 402 .

[0038] A second mounting rod 405 is fixedly mounted on the bottom of the first mounting frame 201 of the main body. A helical gear 406 is rotatably mounted inside the second mounting rod 405 . The helical gear 406 is meshed with the worm gear 404 .

[0039] Connecting rods 407 are fixedly mounted on both sides of the bevel gear 406 . A driving gear disc 408 is fixedly mounted on the outer surface of the connecting rod 407 . The driving gear disc 408 is meshed with the rack 309 .

[0040] The worm 402 is driven by the servo motor 401. Since the worm wheel 404 is meshed with the worm wheel 404, the worm wheel 404 can be driven to rotate in the first mounting rod 403. Since the worm wheel 404 is in meshing state with the bevel gear 406, the bevel gear 406 can also be driven to rotate in the second mounting rod 405, ensuring that the driving gear plate 408 on the outer surface of the connecting rod 407 is rotated. Since the driving gear plate 408 is in the slide groove 308 and is in meshing state with the rack 309, the second support frame 307 can be driven to rise and fall.

[0041] The implementation principle of a counterweight device for a crane in the embodiment of the present application is as follows: by sliding the limit cover 206 out from the connecting plate 203, a part of the counterweight is placed on the top of the second bearing plate 208, and a hole matching the first limit rod 209 is provided in the counterweight, and the first limit rod 209 can be used to limit the position of multiple groups of counterweights to avoid the offset of multiple groups of counterweights. After placing some counterweights inside the main frame assembly 2, the limit cover 206 is installed in the connecting plate 203, and the limit seat 205 is closed to ensure the limit of the top of the counterweight, and the first bearing frame 207, the second mounting frame 204 of the main body and the first mounting frame 201 of the main body are installed by welding, which can enhance the overall strength of the device and ensure the stable installation of the counterweight; The servo motor 401 drives the worm 402, and since the worm wheel 404 is meshed with the worm wheel 404, the worm wheel 404 can be driven to rotate in the first mounting rod 403. Since the worm wheel 404 is in meshing state with the bevel gear 406, the bevel gear 406 can also be driven to rotate in the second mounting rod 405, ensuring that the driving toothed disc 408 on the outer surface of the connecting rod 407 is rotated. Since the driving toothed disc 408 is in the slide groove 308 and is in meshing state with the rack 309, the second support frame 307 can be driven to rise and fall. The auxiliary frame assembly 3 is driven by the servo motor 401 to move up and down at the bottom of the main frame assembly 2. During this process, the sliding seat 301 is always in meshing with the pressure-bearing high-strength bolt 202, which can generate sufficient friction and bite force. Since the pressure-bearing high-strength bolt 202 is made of high-strength material, it can withstand a large force without plastic deformation when installing the counterweight. The first support frame 302 at the bottom of the sliding seat 301 is installed with an auxiliary first mounting frame 303, thereby supporting the auxiliary frame assembly 3 and ensuring the stability of the device. When the adjusting component 4 is driven to drive the auxiliary frame component 3 to descend, the configuration block is placed in the second limiting rod 305 at the top of the second carrier frame 304, and the limiting plate 210 can be used to limit the counterweight block. Since the second carrier frame 304 and the auxiliary first mounting frame 303 and the auxiliary second mounting frame 306 are welded, the supporting effect of the counterweight block can be enhanced. The lifting of the auxiliary frame component 3 can also facilitate the installation of the counterweight block in the device. When there is a need to add a counterweight block, the operation of adding the counterweight block can also be conveniently realized, ensuring that the entire counterweight device can work stably and effectively under different counterweight requirements. Driven by the servo motor 401, the auxiliary frame assembly 3 is driven to rise and fall at the bottom of the main frame assembly 2. During this process, the sliding seat 301 is always in meshing state with the pressure-bearing high-strength bolt 202, which can generate sufficient friction and bite force. Since the pressure-bearing high-strength bolt 202 is made of high-strength material, it can be installed when the counterweight block is installed. It can withstand a large force without plastic deformation, thereby supporting the auxiliary frame assembly 3 and ensuring the stability of the device. After the counterweight block is installed, the welding plate 103 is aligned with the installation position, and the welding assembly 1 is installed in the external equipment. The welding base 101 and the connecting frame 102 can ensure that after the welding assembly 1 is installed, it provides support for the main frame assembly 2 and the auxiliary frame assembly 3 at the bottom.

[0042] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A counterweight device for a crane, comprising a welding assembly (1), the welding assembly (1) comprising a welding base (101), a connecting frame (102) welded to the inner wall of the welding base (101), and a welding plate (103) welded to the outer surface of the connecting frame (102), characterized in that: Also includes: A main body frame assembly (2), the main body frame assembly (2) comprising a main body first mounting frame (201), the main body first mounting frame (201) being welded to a main body second mounting frame (204) via a connecting plate (203), a pressure-bearing high-strength bolt (202) being fixedly mounted on the bottom of the main body first mounting frame (201), a first bearing frame (207) being welded to the bottom of the pressure-bearing high-strength bolt (202), and a first limiting rod (209) being fixedly mounted on the top of the first bearing frame (207); An auxiliary frame assembly (3), the auxiliary frame assembly (3) comprising a sliding seat (301), a second bearing frame (304) being fixedly mounted inside the sliding seat (301), and a second limiting rod (305) being fixedly mounted on the top of the second bearing frame (304).

2. A counterweight device for a crane as claimed in claim 1, characterized in that: A main body first mounting frame (201) is welded to the bottom of the welding base (101), a limit cover (206) is slidably mounted inside the main body first mounting frame (201), and a limit seat (205) is rotatably mounted inside the main body first mounting frame (201).

3. A counterweight device for a crane as claimed in claim 1, characterized in that: A second bearing plate (208) is fixedly mounted inside the first bearing frame (207), a first limiting rod (209) is fixedly mounted on the top of the second bearing plate (208), and a limiting plate (210) is fixedly mounted on the bottom of the second bearing plate (208).

4. A counterweight device for a crane as claimed in claim 1, characterized in that: The outer surface of the pressure-bearing high-strength bolt (202) is sleeved with a sliding seat (301), the bottom of the sliding seat (301) is fixedly mounted with a first support frame (302), and the outer surface of the first support frame (302) is welded with an auxiliary first mounting frame (303).

5. A counterweight device for a crane as claimed in claim 4, characterized in that: A second bearing frame (304) is fixedly mounted inside the auxiliary first mounting frame (303), a second limiting rod (305) is fixedly mounted on the top of the second bearing frame (304), and an auxiliary second mounting frame (306) is welded to one end of the second bearing frame (304) away from the auxiliary first mounting frame (303).

6. A counterweight device for a crane as claimed in claim 5, characterized in that: A second support frame (307) is welded to the outer surface of the auxiliary second mounting frame (306), a slide groove (308) is provided inside the second support frame (307), and a rack (309) is provided inside the slide groove (308).

7. A counterweight device for a crane as claimed in claim 1, characterized in that: An adjustment component (4) is fixedly mounted on the top of the first mounting frame (201) of the main body. The adjustment component (4) comprises a servo motor (401). A worm (402) is fixedly mounted on the output end of the servo motor (401).

8. A counterweight device for a crane as claimed in claim 7, characterized in that: A first mounting rod (403) is fixedly mounted inside the first mounting frame (201) of the main body, a worm wheel (404) is rotatably mounted inside the first mounting rod (403), and the worm wheel (404) is meshed with the worm (402).

9. A counterweight device for a crane as claimed in claim 8, characterized in that: A second mounting rod (405) is fixedly mounted on the bottom of the first mounting frame (201) of the main body, and a helical gear (406) is rotatably mounted inside the second mounting rod (405), and the helical gear (406) is meshed with the worm gear (404).

10. A counterweight device for a crane as claimed in claim 9, characterized in that: Connecting rods (407) are fixedly mounted on both sides of the bevel gear (406), and a driving toothed disc (408) is fixedly mounted on the outer surface of the connecting rod (407), and the driving toothed disc (408) is meshed with the rack (309).

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