Counterweight lifting device for truck cranes and truck cranes

Abstract

This utility model provides a counterweight lifting device for a truck crane, including a fixed counterweight module, a power module, a first drive shaft, a second drive shaft, a first winch module, a first clamping module, a second winch module, a second clamping module, and a movable counterweight module. The power module is connected to the fixed counterweight module. One end of the first drive shaft is connected to the power module, and the other end is connected to the first winch module. The first clamping module is connected to the first winch module. One end of the second drive shaft is connected to the power module, and the other end is connected to the second winch module. The second clamping module is connected to the second winch module. The first and second drive shafts are symmetrically arranged, and the first and second clamping modules are used to connect the movable counterweight module. The counterweight lifting device for a truck crane of this utility model is easy to disassemble and install, saves costs, optimizes space, and reduces its own weight. This utility model also relates to a truck crane.

Description

Technical Field

[0001] This utility model relates to the field of crane equipment technology, and in particular to a counterweight lifting device for a truck crane and the truck crane itself. Background Technology

[0002] Crane counterweights are used to maintain the stability of the crane during operation and to balance the load. Current counterweight systems include fixed and movable counterweights. During short-distance crane relocation, the movable counterweight is placed on the chassis and transported with the crane. When the crane reaches its destination, the movable and fixed counterweights are lifted and installed using a lifting mechanism attached to a winch or the fixed counterweight. Existing counterweight systems have a complex structure between the lifting mechanism and the counterweight, poor stability, and inconvenient disassembly and assembly. When balancing the counterweight, it can only be lifted directly below the vertical cylinder of the lifting mechanism, requiring precise initial placement of the counterweight on the ground. Furthermore, the vertical cylinder requires a large piston stroke for vertical lifting and installation, thus occupying a large space and increasing the crane's weight. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a counterweight lifting device for a truck crane, which can solve the problems existing in the prior art, facilitate disassembly and installation, save costs, optimize space, and reduce weight.

[0004] This utility model provides a counterweight lifting device for a truck crane, including a fixed counterweight module, a power module, a first drive shaft, a second drive shaft, a first winch module, a first clamping module, a second winch module, a second clamping module, and a movable counterweight module. The fixed counterweight module is connected to the tail end of the truck crane, and the power module is connected to the fixed counterweight module. One end of the first drive shaft is connected to the power module, and the other end of the first drive shaft is connected to the first winch module. The first clamping module is connected to the first winch module. One end of the second drive shaft is connected to the power module, and the other end of the second drive shaft is connected to the second winch module. The second clamping module is connected to the second winch module. The first drive shaft and the second drive shaft are symmetrically arranged with the power module as the center. The first clamping module and the second clamping module are used to connect the movable counterweight module.

[0005] In one embodiment, the first clamping module includes a first connecting seat, a first hook, and a first steel cable. The first connecting seat is connected to the first winch module, the first hook is fixedly connected to the first connecting seat, and the two ends of the first steel cable are respectively connected to the first hook to form a first annular chain. The first annular chain is adjustable in radial direction. The second clamping module includes a second connecting seat, a second hook, and a second steel cable. The second connecting seat is connected to the second winch module, the second hook is fixedly connected to the second connecting seat, and the two ends of the second steel cable are respectively connected to the second hook to form a second annular chain. The second annular chain is adjustable in radial direction.

[0006] In one embodiment, a first opening area is formed between the hook head of the first hook and the first connecting seat. The first clamping module further includes a first anti-detachment member, which is disposed in the first opening area and rotatably connected to the first connecting seat. Rotating the first anti-detachment member opens or closes the first opening area. A second opening area is formed between the hook head of the second hook and the second connecting seat. The second clamping module further includes a second anti-detachment member, which is disposed in the second opening area and rotatably connected to the second connecting seat. Rotating the second anti-detachment member opens or closes the second opening area.

[0007] In one embodiment, the first clamping module includes a first connecting seat and a first clamping jaw. The first clamping jaw includes a first clamping portion and a second clamping portion disposed opposite to each other. One end of the first clamping portion and one end of the second clamping portion are both connected to the first connecting seat. The other end of the first clamping portion is connected to the other end of the second clamping portion through a first fastener. The second clamping module includes a second connecting seat and a second clamping jaw. The second clamping jaw includes a third clamping portion and a fourth clamping portion disposed opposite to each other. One end of the third clamping portion and one end of the fourth clamping portion are both connected to the second connecting seat. The other end of the second clamping portion is connected to the other end of the third clamping portion through a second fastener.

[0008] In one embodiment, the movable counterweight module is fixedly connected to a first clamping post and a second clamping post. The first clamping post and the second clamping post are respectively disposed at both ends of the movable counterweight module. The first clamping module includes a first annular chain, and the second clamping module includes a second annular chain. When the movable counterweight module is lifted, the first annular chain is sleeved on the first clamping post, and the second annular chain is sleeved on the second clamping post. Alternatively, the first clamping module includes a first gripper, and the second clamping module includes a second gripper. When the movable counterweight module is lifted, the first gripper is sleeved on the first clamping post, and the second gripper is sleeved on the second clamping post.

[0009] In one embodiment, the power module includes a drive mechanism, a first clutch, and a second clutch. Both the first drive shaft and the second drive shaft are connected to the drive mechanism. The first clutch is connected to the first drive shaft and is disposed between the drive mechanism and the first hoisting module. The second clutch is connected to the second drive shaft and is disposed between the drive mechanism and the second hoisting module.

[0010] In one embodiment, the counterweight lifting device further includes a first transmission module and a second transmission module. The first transmission module is connected to the first winch module and meshes with the first transmission shaft. The second transmission module is connected to the second winch module and meshes with the second transmission shaft.

[0011] In one embodiment, the first winch module includes a first fixed base, a first winch, a first fixed pulley, and a first movable pulley. The first winch and the first fixed pulley are connected to the first fixed base, and the rope of the first winch passes through the first fixed pulley and the first movable pulley in sequence. The second winch module includes a second fixed base, a second winch, a second fixed pulley, and a second movable pulley. The second winch and the second fixed pulley are connected to the second fixed base, and the rope of the second winch passes through the second fixed pulley and the second movable pulley in sequence.

[0012] In one embodiment, the drive mechanism is a servo motor or a hydraulic motor.

[0013] This utility model also relates to a truck crane, including the aforementioned counterweight lifting device for the truck crane.

[0014] The counterweight lifting device of this utility model connects the first drive shaft and the second drive shaft to the power module respectively. When the power module drives the first drive shaft and / or the second drive shaft to rotate, the first winch module and / or the second winch module respectively drive the first clamping module and the second clamping module to lift or lower the movable counterweight module. By cooperating with the first winch module and the first clamping module, and cooperating with the second winch module and the second clamping module, the requirements of the counterweight lifting device on the placement position of the movable counterweight module before hoisting are reduced. By adopting a modular design for the counterweight lifting device, it is easy to disassemble and install, which not only saves costs and has a small size and low installation accuracy requirements, but also optimizes the space occupied by the counterweight lifting device and reduces its weight. In addition, by connecting the first drive shaft and the second drive shaft through a single power module, not only are costs reduced, but the control efficiency of the counterweight lifting device is also improved. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the counterweight lifting device of the first embodiment of the present invention installed on a truck crane.

[0017] Figure 2 This is a side view of the counterweight lifting device of the first embodiment of the present invention installed on a truck crane.

[0018] Figure 3 This is a structural diagram of the counterweight lifting device in the first embodiment of the present invention when lifting the movable counterweight module.

[0019] Figure 4 This is a structural schematic diagram of the counterweight lifting device according to the first embodiment of this utility model.

[0020] Figure 5 This is a top view of the counterweight lifting device according to the first embodiment of this utility model.

[0021] Figure 6 This is a schematic diagram of the connection between the first clamping module and the first movable pulley in the first embodiment of this utility model.

[0022] Figure 7 yes Figure 6 A schematic diagram of the structure when the first anti-detachment component is opened.

[0023] Figure 8 This is a schematic diagram of the structure of the first steel cable in the first embodiment of this utility model.

[0024] Figure 9 This is a side view of the counterweight lifting device according to the first embodiment of this utility model.

[0025] Figure 10 This is a schematic diagram of the structure of the remote control according to the first embodiment of this utility model.

[0026] Figure 11 This is a schematic diagram of the structure of the first gripper in the second embodiment of this utility model.

[0027] Reference numerals: First opening area - 101; First accommodating area - 102; First mounting area - 103; Second accommodating area - 104; Second mounting area - 105; First counterweight fixing hole - 107; Second counterweight fixing hole - 108; Fixed counterweight module - 11; Power module - 12; Drive mechanism - 121; First clutch - 122; Second clutch - 123; First drive shaft - 13; First gear - 131; Second drive shaft - 14; Second gear - 141; First winch module - 15; First fixed seat - 151; First support - 1511; First vertical plate - 1511a; Second vertical plate - 1511b; Second support - 1512; First winch - 152; First fixed pulley - 153; First movable pulley - 154; Connecting shaft - 1541; Second winch module - 16; Second fixed seat - 161; Third support - 1611 Third upright plate - 1611a; Fourth upright plate - 1611b; Second winch - 162; Second fixed pulley - 163; Second movable pulley - 164; First clamping module - 17; First connecting seat - 171; First hook - 172; First steel cable - 173; First ring chain - 174; First anti-detachment component - 175; First gripper - 176; First clamping part - 1761; Second clamping part - 1762; First fastener - 1763; First rotating shaft - 177; Second clamping module - 18; Second connecting seat - 181; Second hook - 182; Second steel cable - 183; Movable counterweight module - 19; First clamping column - 191; First transmission module - 21; Third gear - 211; Third transmission shaft - 212; Second transmission module - 22; Fourth gear - 221; Fourth transmission shaft - 222; Control device - 23; Truck crane - 30. Detailed Implementation

[0028] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0030] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0032] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0033] First Embodiment

[0034] like Figures 1 to 10 As shown, the counterweight lifting device of the truck crane includes a fixed counterweight module 11, a power module 12, a first drive shaft 13, a second drive shaft 14, a first winch module 15, a first clamping module 17, a second winch module 16, a second clamping module 18, and a movable counterweight module 19. The fixed counterweight module 11 is connected to the tail end of the truck crane 30, and the power module 12 is connected to the fixed counterweight module 11. One end of the first drive shaft 13 is connected to the power module 12, and the other end of the first drive shaft 13 is connected to the first winch module 15. The first clamping module 17 is connected to the first winch module 15. One end of the second drive shaft 14 is connected to the power module 12, and the other end of the second drive shaft 14 is connected to the second winch module 16. The second clamping module 18 is connected to the second winch module 16. The first drive shaft 13 and the second drive shaft 14 are symmetrically arranged with the power module 12 as the center. The first clamping module 17 and the second clamping module 18 are used to connect the movable counterweight module 19. In this embodiment, the power module 12 is installed in the middle of the fixed counterweight module 11, and the power module 12, the first winch module 15, the first clamping module 17, the second winch module 16, and the second clamping module 18 can all be disassembled.

[0035] The counterweight lifting device of this utility model connects the first drive shaft 13 and the second drive shaft 14 to the power module 12 respectively. When the power module 12 drives the first drive shaft 13 and / or the second drive shaft 14 to rotate, the first winch module 15 and / or the second winch module 16 respectively drive the first clamping module 17 and the second clamping module 18 to lift or lower the movable counterweight module 19. By cooperating with the first winch module 15 and the first clamping module 17, and by cooperating with the second winch module 16 and the second clamping module 18, the requirements of the counterweight lifting device on the placement position of the movable counterweight module 19 before hoisting are reduced. By modularly designing the counterweight lifting device, it is easy to disassemble and install, which not only saves costs and has a small size and low installation accuracy requirements, but also optimizes the space occupied by the counterweight lifting device and reduces its weight. In addition, by connecting the first drive shaft 13 and the second drive shaft 14 through a power module 12, not only are costs reduced, but the control efficiency of the counterweight lifting device is also improved.

[0036] like Figures 1 to 5 As shown, the counterweight lifting device also includes a first transmission module 21 and a second transmission module 22. The first transmission module 21 is connected to the first winch module 15. A first gear 131 is fixedly connected to one end of the first transmission shaft 13 near the first winch module 15. The first transmission module 21 meshes with the first gear 131 of the first transmission shaft 13. The second transmission module 22 is connected to the second winch module 16. A second gear 141 is fixedly connected to one end of the second transmission shaft 14 near the second winch module 16. The second transmission module 22 meshes with the second gear 141 of the second transmission shaft 14.

[0037] Preferably, the power module 12 includes a drive mechanism 121, a first clutch 122, and a second clutch 123. The first drive shaft 13 and the second drive shaft 14 are both connected to the drive mechanism 121. The first clutch 122 is connected to the first drive shaft 13 and is positioned between the drive mechanism 121 and the first hoisting module 15. When the first clutch 122 is open, the first drive module 21 and the first hoisting module 15 disengage from the first drive shaft 13. The second clutch 123 is connected to the second drive shaft 14 and is positioned between the drive mechanism 121 and the second hoisting module 16. When the second clutch 123 is open, the second drive module 22 and the second hoisting module 16 disengage from the second drive shaft 14. Therefore, the first drive shaft 13 and the second drive shaft 14 can be controlled by a single drive mechanism 121. When the required heights of the first clamping module 17 and the second clamping module 18 are different, resulting in asynchronous upward movement, the upward or downward movement of the first clamping module 17 or the second clamping module 18 can be flexibly adjusted by controlling the first clutch 122 or the second clutch 123. The drive mechanism 121 is a servo motor or a hydraulic motor, etc. In this embodiment, the drive mechanism 121 also includes a gearbox, which is connected to the output shaft of the servo motor or the output shaft of the hydraulic motor. The first transmission shaft 13 and the second transmission shaft 14 are respectively connected to the gearbox.

[0038] like Figure 4 and Figure 5 As shown, the first winch module 15 includes a first fixed base 151, a first winch 152, a first fixed pulley 153, and a first movable pulley 154. The first winch 152 and the first fixed pulley 153 are connected to the first fixed base 151, and the rope of the first winch 152 is arranged to pass through the first fixed pulley 153 and the first movable pulley 154 in sequence. The second winch module 16 includes a second fixed base 161, a second winch 162, a second fixed pulley 163, and a second movable pulley 164. The second winch 162 and the second fixed pulley 163 are connected to the second fixed base 161, and the rope of the second winch 162 is arranged to pass through the second fixed pulley 163 and the second movable pulley 164 in sequence.

[0039] Preferably, the first transmission module 21 includes a third gear 211 and a third transmission shaft 212. The third transmission shaft 212 passes through the first winch 152 and the third gear 211. The third gear 211 meshes with the first gear 131. When the first transmission shaft 13 rotates, the first gear 131 drives the third gear 211 to rotate. Since the third gear 211 is connected to the first transmission shaft 13, when the third gear 211 rotates, the third transmission shaft 212 and the first winch 152 rotate together with the third gear 211. The second transmission module 22 includes a fourth gear 221 and a fourth transmission shaft 222. The fourth transmission shaft 222 passes through the second winch 162 and the fourth gear 221. The fourth gear 221 meshes with the second gear 141. When the second transmission shaft 14 rotates, the second gear 141 drives the fourth gear 221 to rotate. Since the fourth gear 221 is connected to the fourth transmission shaft 222, when the fourth gear 221 rotates, the fourth transmission shaft 222 and the second winch 162 rotate together with the fourth gear 221. In this embodiment, the first gear 131 of the first transmission shaft 13 is a pinion, and the third gear 211 is a large gear. The large gear is mounted on the third transmission shaft 212, which is a load shaft and can increase the transmission torque. Similarly, the second gear 141 of the second transmission shaft 14 is a pinion, and the fourth gear 221 is a large gear. The large gear is mounted on the fourth transmission shaft 222, which is a load shaft and can increase the transmission torque.

[0040] Please continue to refer to this. Figure 4 and Figure 5The first fixed base 151 also includes a first support 1511 and a second support 1512. The first support 1511 is fixedly connected to the fixed counterweight module 11, and the second support 1512 is fixedly connected to the first support 1511. The second support 1512 is spaced apart from or adjacent to the fixed counterweight module 11. The first transmission module 21 and the third transmission shaft 212 are connected to the first support 1511, and the first fixed pulley 153 is connected to the second support 1512. The second fixed base 161 also includes a third support 1611 and a fourth support (not shown). The third support 1611 is fixedly connected to the fixed counterweight module 11, and the fourth support is fixedly connected to the third support 1611. The fourth support is spaced apart from or adjacent to the fixed counterweight module 11. The second transmission module 22 and the fourth transmission shaft 222 are connected to the third support 1611, and the second fixed pulley 163 is connected to the fourth support. The first support 1511 includes a first accommodating area 102 and a first mounting area 103. A third gear 211 is disposed within the first accommodating area 102, and a first winch 152 is disposed within the first mounting area 103. The first support 1511 also includes a first vertical plate 1511a and a second vertical plate 1511b disposed opposite to each other. The first vertical plate 1511a is disposed close to the power module 12, and the second vertical plate 1511b is disposed between the first accommodating area 102 and the first mounting area 103. A first drive shaft 13 passes through the first vertical plate 1511a, causing the first gear 131 to be located within the first accommodating area 102 and mesh with the third gear 211. One end of the third drive shaft 212 passes through the second vertical plate 1511b and connects with the third gear 211. The third support 1611 is provided with a second accommodating area 104 and a second mounting area 105. A fourth gear 221 is disposed in the second accommodating area 104, and a second winch 162 is disposed in the second mounting area 105. The third support 1611 also includes a third vertical plate 1611a and a fourth vertical plate 1611b disposed opposite to each other. The third vertical plate 1611a is disposed close to the power module 12, and the fourth vertical plate 1611b is disposed between the second accommodating area 104 and the second mounting area 105. The second drive shaft 14 passes through the third vertical plate 1611a so that the second gear 141 is located in the second accommodating area 104 and meshes with the fourth gear 221. One end of the fourth drive shaft 222 passes through the fourth vertical plate 1611b and is connected to the fourth gear 221. In this embodiment, the second support 1512 is preferably a plate-shaped structure, and the connecting shaft of the first fixed pulley 153 is fixedly connected between the second support 1512 and the fixed counterweight module 11. The fourth support is preferably a plate-shaped structure, and the connecting shaft of the second fixed pulley 163 is fixedly connected between the fourth support and the fixed counterweight module 11.

[0041] Preferably, the first clamping module 17 includes a first connecting seat 171, a first hook 172, and a first steel cable 173. The first connecting seat 171 is connected to the first winch module 15, the first hook 172 is fixedly connected to the first connecting seat 171, and the two ends of the first steel cable 173 are respectively connected to the first hook 172 to form a first ring chain. The first ring chain can adjust the radial size. The second clamping module 18 includes a second connecting seat 181, a second hook 182, and a second steel cable 183. The second connecting seat 181 is connected to the second winch module 16, the second hook 182 is fixedly connected to the second connecting seat 181, and the two ends of the second steel cable 183 are respectively connected to the second hook 182 to form a second ring chain. The second ring chain can adjust the radial size. In this embodiment, the first connecting seat 171 is fixedly connected to the connecting shaft 1541 of the first movable pulley 154. The first connecting seat 171 is preferably a U-shaped plate. One end of the first connecting seat 171 is connected to one end of the connecting shaft 1541 of the first movable pulley 154 by a first pin. That is, one end of the connecting shaft 1541 of the first movable pulley 154 is provided with a first pin hole. The first connecting seat 171 is provided with a second pin hole corresponding to the first pin hole. The first pin passes through the first pin hole and the second pin hole. The other end of the first connecting seat 171 is connected to the other end of the connecting shaft 1541 of the first movable pulley 154 by a second pin. That is, the connecting shaft 1541 of the first movable pulley 154 is provided with a third pin hole. The first connecting seat 171 is provided with a fourth pin hole corresponding to the third pin hole. The second pin passes through the third pin hole and the fourth pin hole. The structure and connection method of the second connecting seat 181 are the same as those of the first connecting seat 171, and will not be described in detail here. The first steel cable 173 is formed by multiple steel rings connected end to end. The first steel cable 173 is strip-shaped. When the first steel cable 173 is hung on the first hook 172, the steel ring at one end of the first steel cable 173 is connected to the first hook 172. By adjusting the position of the steel ring at the other end of the first steel cable 173 connected to the first hook 172, the radial dimension of the first annular chain formed by the first steel cable 173 can be adjusted so that the first annular chain can be adapted to movable counterweight modules 19 of different sizes and types. The shape and connection method of the second steel cable 183 are the same as those of the first steel cable 173, and will not be described in detail here. The first annular chain and the second annular chain are highly adaptable and easy to assemble and disassemble. Since the winch rope has a flexible fit with the first steel cable 173 and the second steel cable 183, the requirements for the initial position of the movable counterweight module 19 can be reduced, and the adaptability of clamping can be improved.

[0042] like Figure 6 and Figure 7As shown, a first opening area 101 is formed between the hook head of the first hook 172 and the first connecting seat 171. The first clamping module 17 also includes a first anti-detachment component 175, which is disposed in the first opening area 101 and rotatably connected to the first connecting seat 171. Rotating the first anti-detachment component 175 opens or closes the first opening area 101. Specifically, the first clamping module 17 also includes a first rotating shaft 177, which is connected to the first connecting seat 171. The first anti-detachment component 175 is connected to the first rotating shaft 177 and can rotate around the axis of the first rotating shaft 177 to prevent the first steel cable 173 from falling off the first hook 172. The first anti-detachment component 175 is preferably a plate-shaped structure or a hook-shaped structure, etc.; a second opening area is formed between the hook head of the second hook 182 and the second connecting seat 181. The second clamping module 18 also includes a second anti-detachment component, which is disposed in the second opening area and is rotatably connected to the second connecting seat 181. The second anti-detachment component is rotated to open or close the second opening area. Specifically, the second clamping module 18 also includes a second rotating shaft, which is connected to the second connecting seat 181. The second anti-detachment component is connected to the second rotating shaft and can rotate around the axis of the second rotating shaft to prevent the second steel cable 183 from falling off the second hook 182. The second anti-detachment component is preferably a plate-shaped structure or a hook-shaped structure, etc.

[0043] like Figures 1 to 3 As shown, the movable counterweight module 19 is fixedly connected to a first clamping post 191 and a second clamping post. The first clamping post 191 and the second clamping post are respectively located at both ends of the movable counterweight module 19. When the movable counterweight module 19 is lifted, a first annular chain is sleeved on the first clamping post 191, and a second annular chain is sleeved on the second clamping post. In this embodiment, both the first clamping post 191 and the second clamping post are columnar structures. The first clamping post 191 and the second clamping post are preferably integrally formed with the movable counterweight module 19, but they can also be connected by bolts.

[0044] like Figure 3As shown, the fixed counterweight module 11 has first counterweight fixing holes 107 at both ends, and the movable counterweight module 19 has second counterweight fixing holes 108 at both ends corresponding to the first counterweight fixing holes 107. When the movable counterweight module 19 is hoisted to the position where the fixed counterweight module 11 is assembled, the bolts are passed through the first counterweight fixing holes 107 and the second counterweight fixing holes 108 and connected to the nuts, so that the movable counterweight module 19 and the fixed counterweight module 11 are fixedly connected. When it is necessary to disassemble the counterweight, the operator first removes the bolts and nuts between the movable counterweight module 19 and the fixed counterweight module 11, and then controls the drive mechanism 121 to reverse so that the movable counterweight module 19 descends. When the movable counterweight module 19 falls to the ground, the first anti-detachment component 175 and the second anti-detachment component are opened, and the first steel cable 173 and the second steel cable 183 are loosened, so that the disassembly of the movable counterweight module 19 can be completed.

[0045] like Figure 10 As shown, the counterweight lifting device also includes a controller 23, which can be a wired or wireless remote control. The controller 23 is equipped with a magnification button, which is used to adjust the rising or falling speed of the first clamping module 17 and the second clamping module 18. The magnification adjustment can be steplessly adjusted. The controller is also equipped with left-up, left-down, simultaneous-up, simultaneous-down, right-up, and right-down buttons. The left-up and left-down buttons are used to adjust the raising and lowering of the first clamping module 17, while the second clamping module 18 remains stationary. The simultaneous-up and simultaneous-down buttons are used for the first clamping module 17 and the second clamping module 18 to rise or fall simultaneously. The right-up and right-down buttons are used to adjust the raising and lowering of the second clamping module 18, while the first clamping module 17 remains stationary. The left-up, left-down, right-up, and right-down buttons can be used to achieve micro-adjustment of the first clamping module 17 or the second clamping module 18. Specifically, when the initial position of the movable counterweight module 19 is not standardized, and the ropes of the first winch 152 and the second winch 162 are not the same length and cannot rise synchronously, the left rise, left fall, right rise, and right fall buttons on the control panel can be clicked to achieve micro-adjustment. Clicking the left rise or left fall button will open the second clutch 123, disengage the second transmission module 22 and the second winch module 16 from the second transmission shaft 14, and activate the locking device of the fourth rotating shaft to prevent the second winch 162 from rotating under gravity and causing a safety accident. Meanwhile, the first winch module 15 and the first clamping module 17 will automatically rise or fall under the drive of the power module 12 to achieve micro-adjustment.

[0046] Second Embodiment

[0047] like Figure 11 As shown, the counterweight lifting device in this embodiment is structurally similar to the counterweight lifting device in the first embodiment, except that the first clamping module 17 and the second clamping module 18 have different structures.

[0048] Specifically, the first clamping module 17 includes a first connecting seat 171 and a first clamping jaw 176. The first clamping jaw 176 includes a first clamping part 1761 and a second clamping part 1762 disposed opposite to each other. One end of the first clamping part 1761 and one end of the second clamping part 1762 are both connected to the first connecting seat 171. The other end of the first clamping part 1761 is connected to the other end of the second clamping part 1762 through a first fastener 1763. The second clamping module 18 includes a second connecting seat 181 and a second clamping jaw. The second clamping jaw includes a third clamping part and a fourth clamping part disposed opposite to each other. One end of the third clamping part and one end of the fourth clamping part are both connected to the second connecting seat 181. The other end of the second clamping part 1762 is connected to the other end of the third clamping part through a second fastener. When the movable counterweight module 19 is lifted, the first clamping jaw 176 is sleeved on the first clamping post 191, and the second clamping jaw is sleeved on the second clamping post. In this embodiment, both the first fastener 1763 and the second fastener are bolts and nuts. By adjusting the tightness of the first fastener 1763 and the second fastener, the clamping range of the first jaw 176 and the second jaw can be adjusted, thereby improving the adaptability of the first clamping module 17 and the second clamping module 18 during clamping.

[0049] This utility model also relates to a truck crane, including the aforementioned counterweight lifting device for the truck crane.

[0050] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A counterweight lifting device for a truck crane, characterized in that, It includes a fixed counterweight module (11), a power module (12), a first drive shaft (13), a second drive shaft (14), a first winch module (15), a first clamping module (17), a second winch module (16), a second clamping module (18), and a movable counterweight module (19). The fixed counterweight module (11) is connected to the tail end of the truck crane (30), and the power module (12) is connected to the fixed counterweight module (11). One end of the first drive shaft (13) is connected to the power module (12), the other end of the first drive shaft (13) is connected to the first hoisting module (15), and the first clamping module (17) is connected to the first hoisting module (15). One end of the second drive shaft (14) is connected to the power module (12), the other end of the second drive shaft (14) is connected to the second hoisting module (16), and the second clamping module (18) is connected to the second hoisting module (16). The first drive shaft (13) and the second drive shaft (14) are symmetrically arranged with the power module (12) as the center, and the first clamping module (17) and the second clamping module (18) are used to connect the movable counterweight module (19).

2. The counterweight lifting device for a truck crane as described in claim 1, characterized in that, The first clamping module (17) includes a first connecting seat (171), a first hook (172) and a first steel cable (173). The first connecting seat (171) is connected to the first hoisting module (15). The first hook (172) is fixedly connected to the first connecting seat (171). The two ends of the first steel cable (173) are respectively connected to the first hook (172) to form a first ring chain. The first ring chain can adjust the radial size. The second clamping module (18) includes a second connecting seat (181), a second hook (182), and a second steel cable (183). The second connecting seat (181) is connected to the second hoisting module (16). The second hook (182) is fixedly connected to the second connecting seat (181). The two ends of the second steel cable (183) are respectively connected to the second hook (182) to form a second ring chain. The second ring chain can adjust the radial size.

3. The counterweight lifting device for a truck crane as described in claim 2, characterized in that, The hook head of the first hook (172) and the first connecting seat (171) form a first opening area (101). The first clamping module (17) also includes a first anti-detachment component (175). The first anti-detachment component (175) is disposed in the first opening area (101). The first anti-detachment component (175) is rotatably connected to the first connecting seat (171). Rotating the first anti-detachment component (175) can open or close the first opening area (101). The hook head of the second hook (182) forms a second opening area between the hook head and the second connecting seat (181). The second clamping module (18) also includes a second anti-detachment member. The second anti-detachment member is disposed in the second opening area and is rotatably connected to the second connecting seat (181). Rotating the second anti-detachment member opens or closes the second opening area.

4. The counterweight lifting device for a truck crane as described in claim 1, characterized in that, The first clamping module (17) includes a first connecting seat (171) and a first clamping jaw (176). The first clamping jaw (176) includes a first clamping part (1761) and a second clamping part (1762) disposed opposite to each other. One end of the first clamping part (1761) and one end of the second clamping part (1762) are both connected to the first connecting seat (171). The other end of the first clamping part (1761) is connected to the other end of the second clamping part (1762) through a first fastener (1763). The second clamping module (18) includes a second connecting seat (181) and a second clamping jaw. The second clamping jaw includes a third clamping part and a fourth clamping part arranged opposite to each other. One end of the third clamping part and one end of the fourth clamping part are both connected to the second connecting seat (181). The other end of the second clamping part (1762) is connected to the other end of the third clamping part through a second fastener.

5. The counterweight lifting device for a truck crane as described in claim 1, characterized in that, The movable counterweight module (19) is fixedly connected to a first clamping post (191) and a second clamping post, with the first clamping post (191) and the second clamping post respectively located at both ends of the movable counterweight module (19). The first clamping module (17) includes a first ring chain, and the second clamping module (18) includes a second ring chain. When the movable counterweight module (19) is lifted, the first ring chain is sleeved on the first clamping post (191), and the second ring chain is sleeved on the second clamping post. Alternatively, the first clamping module (17) may include a first clamping jaw (176), and the second clamping module (18) may include a second clamping jaw. When the movable counterweight module (19) is lifted, the first clamping jaw (176) is sleeved on the first clamping column (191), and the second clamping jaw is sleeved on the second clamping column.

6. The counterweight lifting device for a truck crane as described in claim 1, characterized in that, The power module (12) includes a drive mechanism (121), a first clutch (122) and a second clutch (123). The first drive shaft (13) and the second drive shaft (14) are both connected to the drive mechanism (121). The first clutch (122) is connected to the first drive shaft (13) and is located between the drive mechanism (121) and the first hoisting module (15). The second clutch (123) is connected to the second drive shaft (14) and is located between the drive mechanism (121) and the second hoisting module (16).

7. The counterweight lifting device for a truck crane as described in claim 6, characterized in that, The counterweight lifting device further includes a first transmission module (21) and a second transmission module (22). The first transmission module (21) is connected to the first winch module (15) and meshes with the first transmission shaft (13). The second transmission module (22) is connected to the second winch module (16) and meshes with the second transmission shaft (14).

8. The counterweight lifting device for a truck crane as described in claim 7, characterized in that, The first winch module (15) includes a first fixed base (151), a first winch (152), a first fixed pulley (153), and a first movable pulley (154). The first winch (152) and the first fixed pulley (153) are connected to the first fixed base (151). The rope of the first winch (152) passes through the first fixed pulley (153) and the first movable pulley (154) in sequence. The second winch module (16) includes a second fixed base (161), a second winch (162), a second fixed pulley (163), and a second movable pulley (164). The second winch (162) and the second fixed pulley (163) are connected to the second fixed base (161). The rope of the second winch (162) passes through the second fixed pulley (163) and the second movable pulley (164) in sequence.

9. The counterweight lifting device for a truck crane as described in claim 6, characterized in that, The drive mechanism (121) is a servo motor or a hydraulic motor.

10. A truck crane, characterized in that, The counterweight lifting device for a truck crane as described in any one of claims 1 to 9.

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