Multi-mode telescopic boom crane

Abstract

This utility model discloses a multi-mode telescopic boom crane. A hydraulic pump box is fixedly installed at the top of the lifting mechanism, located at the end of the boom. A telescopic cylinder is fixedly installed on the top of the hydraulic pump box, and a retracting roller is fixedly installed on the top of the telescopic cylinder. A telescopic boom A is installed at the end of the boom via the cylinder, and a telescopic boom B is installed at the end of telescopic boom A via the cylinder. Both telescopic boom A and telescopic boom B are fixedly installed with pull rings. The retracting roller and the pull rings are connected and tightened by a pulling steel cable. A lifting frame is fixedly installed at the end of telescopic boom B. The counterweight mechanism includes a connecting frame fixedly installed at the bottom of the chassis, and four sets of support mechanisms are fixedly installed on the outside of the connecting frame. Compared with the retracting roller installed on the boom, this utility model changes the stress point of the retracting roller, reducing the load on the boom and thus better ensuring the stable use of the boom.

Description

Technical Field

[0001] This utility model belongs to the field of crane technology, specifically relating to a multi-mode telescopic boom crane. Background Technology

[0002] A multi-mode crane is an intelligent lifting device with multiple working modes and function switching capabilities. It can quickly adjust its structural form and working mode according to different operational needs, achieving more efficient and safer lifting operations. It features multiple working modes: different forms (such as telescopic boom, folding boom, tower boom, etc.) can be switched hydraulically, electrically, or mechanically to adapt to different working conditions. Examples include: full extension mode (maximum working radius), compact mode (operating in confined spaces), heavy-duty mode (reduced boom radius, increased lifting capacity), and fast mode (simplified process, improved response speed).

[0003] Domestic utility model patent application CN202121304446.5 discloses a telescopic crane boom, which includes a boom body and a support frame for mounting the boom body. The boom body includes a fixed boom and a movable boom. The fixed boom is a square tube, and the movable boom is inserted into the fixed boom. The support frame is connected to opposing mounting plates, which are vertically arranged. The fixed boom is located between the two mounting plates. A clamping assembly is connected to the mounting plates, including a push cylinder and a clamping plate. The push cylinder is connected to the mounting plate, and its telescopic rod faces the fixed boom. The telescopic rod of the push cylinder passes through the fixed boom and connects to the clamping plate, which is vertically arranged and located between the fixed boom and the movable boom. This application has the effect of reducing the deformation of the fixed boom, thereby improving the load-bearing capacity. The above-mentioned utility model has the effect of reducing the deformation of the fixed arm and thus improving the load-bearing capacity. The utility model is equipped with a winding roller installed on the fixed arm and the movable arm is pulled by the pulling rope on the winding roller. However, the stress point of the winding roller is at the top of the fixed arm, and the load hoisted at the end of the movable arm is still borne by the fixed arm. It cannot solve the problem of the large load on the fixed arm from the root. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a multi-mode telescopic boom crane, including a chassis base, a counterweight mechanism fixedly installed at the bottom of the chassis base, a lifting mechanism installed on the top of the chassis base, and a lifting boom installed on the top of the lifting mechanism. A hydraulic pump box is fixedly installed on the top of the lifting mechanism at the end of the lifting boom. A telescopic cylinder is fixedly installed on the top of the hydraulic pump box. A take-up and extend roller is fixedly installed on the top of the telescopic cylinder. An A telescopic boom is installed at the end of the lifting boom by a hydraulic cylinder. A B telescopic boom is installed at the end of the A telescopic boom by a hydraulic cylinder. Pull rings are fixedly installed on both the A telescopic boom and the B telescopic boom. The take-up and extend rollers and the pull rings are connected and tightened by a pulling steel cable. A lifting frame is fixedly installed at the end of the B telescopic boom. The counterweight mechanism includes a connecting frame fixedly installed at the bottom of the chassis base. Four sets of support mechanisms are fixedly installed on the outside of the connecting frame.

[0005] As a further preferred technical solution of this utility model; a docking frame is welded and installed on one side of the chassis base, and a welding frame is fixedly installed on the lifting arm. A diagonal brace hydraulic cylinder is connected and installed between the bottom of the welding frame and the docking frame, and the diagonal brace hydraulic cylinder is connected and installed to the welding frame through a rotating shaft.

[0006] The bottom of the crane boom is supported by a diagonal brace hydraulic cylinder. Through the principle of geometric stability, the balance and safety of the crane during operation are ensured, and the stability of the crane boom is guaranteed.

[0007] As a further preferred technical solution of this utility model; a hydraulic cylinder is installed on the top of the chassis base, and the top of the hydraulic cylinder is fixedly installed with the lifting mechanism. The top of the hydraulic cylinder is provided with a push end. The lifting mechanism includes a rotating platform for supporting the lifting arm and an operating table fixedly installed on one side of the rotating platform. One end of the lifting arm is connected to the top of the rotating platform through a flipping shaft.

[0008] The crane mechanism is lifted by hydraulic cylinders, the base height of the boom is adjusted, the rotating platform drives the boom to rotate, and the direction is adjusted according to the position of the object being lifted, so as to realize the normal operation of the crane.

[0009] As a further preferred technical solution of this utility model, a rigid support rod is fixedly installed on the top of the lifting arm, and the lifting frame includes two sets of wire rope pulleys fixedly installed by bearings, a wire rope wound and installed on the wire rope pulleys, and a lifting hook for lifting fixedly connected by the wire rope.

[0010] Rigid struts reduce the deformation of the crane boom caused by stress. The object is lifted and secured using a lifting hook, which works in conjunction with the crane boom for hoisting.

[0011] As a further preferred technical solution of this utility model, the support mechanism includes a support plate fixedly installed on the side of the connecting frame, a support leg flipped and installed at the end of the support plate, and a support block flipped and installed at the end of the support leg. The bottom of the support block is connected to and installed with a base frame, and the bottom of the support block is connected to and installed with the inside of the base frame through a shock-absorbing spring assembly.

[0012] By using outriggers to support the bottom of the chassis, the support area at the bottom of the crane is increased, reducing long-term pressure deformation of the chassis and lowering the risk of center of gravity shift.

[0013] As a further preferred technical solution of this utility model, the counterweight mechanism also includes a counterweight seat fixedly installed at the bottom of the connecting frame and a parking block fixedly installed at the bottom of the counterweight seat.

[0014] The stability of the crane chassis is ensured by the coordination of the parking blocks and the support mechanism. Beneficial effects

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The bottom of the boom is supported by a diagonal hydraulic cylinder. Through the principle of geometric stability, the balance and safety of the crane during operation are ensured, and the stability of the boom is guaranteed. When lifting loads at its end, the force can be evenly transmitted to the support system of the counterweight mechanism, thereby significantly improving the crane's adaptive stability and anti-overturning ability.

[0017] The pull cable on the take-up and extend roller pulls either the A or B telescopic boom, effectively counteracting the downward pressure caused by the load. This significantly reduces the risk of structural deformation caused by the load on the hook pressing down on the B telescopic boom or the pull ring. More importantly, the take-up and extend roller is installed on the other side of the chassis. When the counterweight mechanism provides support, the chassis acts as the fulcrum. The pull cable on the take-up and extend roller better balances the downward pressure on the boom. Compared to the take-up and extend roller installed on the boom, changing the stress point of the take-up and extend roller reduces the load on the boom, thus better ensuring the stable use of the boom. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the counterweight mechanism of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the lifting arm of this utility model;

[0021] Figure 4 for Figure 3A magnified structural diagram of point A in the middle.

[0022] In the diagram: 1. Chassis base; 11. Hydraulic cylinder; 12. Diagonal brace hydraulic cylinder; 121. Connecting frame; 13. Pushing end; 2. Counterweight mechanism; 21. Counterweight seat; 22. Parking block; 23. Connecting frame; 3. Support mechanism; 31. Support plate; 32. Outrigger; 33. Base frame; 34. Support block; 35. Shock-absorbing spring assembly; 4. Lifting mechanism; 41. Operating platform; 42. Rotating platform; 5. Hydraulic pump box; 51. Telescopic cylinder; 52. Retracting roller; 53. Pulling cable; 6. Lifting boom; 61. Tilting shaft; 62. Rigid support rod; 63. A telescopic boom; 64. B telescopic boom; 65. Pull ring; 66. Welding frame; 661. Rotating shaft; 67. Lifting frame; 671. Wire rope wheel assembly; 672. Lifting hook; 673. Wire rope. Detailed Implementation

[0023] This specific implementation method is a multi-mode telescopic boom crane.

[0024] The above-mentioned utility model has the effect of reducing the deformation of the fixed arm and thus improving the load-bearing capacity. The utility model is equipped with a winding roller installed on the fixed arm and the movable arm is pulled by the pulling rope on the winding roller. However, the stress point of the winding roller is at the top of the fixed arm, and the load hoisted at the end of the movable arm is still borne by the fixed arm. It cannot solve the problem of the large load on the fixed arm from the root.

[0025] Example 1: Its structural schematic diagram is as follows Figures 1-4As shown. A multi-mode telescopic boom crane includes a chassis base 1, a counterweight mechanism 2 fixedly installed at the bottom of the chassis base 1, a lifting mechanism 4 installed on top of the chassis base 1, and a lifting boom 6 installed on top of the lifting mechanism 4. A hydraulic cylinder 11 is installed on the top of the chassis base 1, and the top of the hydraulic cylinder 11 is fixedly installed to the lifting mechanism 4. The top of the hydraulic cylinder 11 has a push end 13. The lifting mechanism 4 includes a rotating platform 42 for supporting the lifting boom 6 and an operating platform 41 fixedly installed on one side of the rotating platform 42. One end of the lifting boom 6 is connected to the top of the rotating platform 42 via a tilting shaft 61. A hydraulic rod for tilting the lifting boom 6 is installed inside the rotating platform 42 at the bottom of the tilting shaft 61. The hydraulic cylinder 11 pushes the lifting mechanism 4 to lift, adjusting the base height of the lifting boom 6. The rotating platform 42 drives the lifting boom 6 to rotate, adjusting its direction according to the position of the lifted object, thus realizing the normal operation of the crane. A docking frame 121 is welded and installed on one side of the chassis base 1, and a welding frame 66 is fixedly installed on the boom 6. A diagonal brace hydraulic cylinder 12 is connected between the bottom of the welding frame 66 and the docking frame 121. The diagonal brace hydraulic cylinder 12 and the welding frame 66 are connected and installed through a rotating shaft 661. The bottom of the boom 6 is supported by the diagonal brace hydraulic cylinder 12. Through the principle of geometric stability, the balance and safety of the crane during operation are ensured, and the stability of the boom 6 is guaranteed. Therefore, when lifting loads at its end, the force can be evenly transmitted to the support system of the counterweight mechanism 2, thereby significantly improving the adaptive stability and anti-overturning ability of the crane.

[0026] A hydraulic pump box 5 is fixedly installed on the top of the lifting mechanism 4 at the end of the lifting arm 6. A telescopic cylinder 51 is fixedly installed on the top of the hydraulic pump box 5. A take-up and release roller 52 is fixedly installed on the top of the telescopic cylinder 51. An A telescopic arm 63 is installed at the end of the lifting arm 6 via a cylinder. A B telescopic arm 64 is installed at the end of the A telescopic arm 63 via a cylinder. Pull rings 65 are fixedly installed on both the A telescopic arm 63 and the B telescopic arm 64. The take-up and release roller 52 and the pull rings 65 are connected and tightened by a pulling steel cable 53. A lifting frame 67 is fixedly installed at the end of the B telescopic arm 64. The pull cable 53 on the take-up and extend roller 52 pulls the A telescopic boom 63 or B telescopic boom 64, effectively counteracting the downward pressure caused by the load. This significantly reduces the risk of structural deformation caused by the load on the hook 672 pressing down on the port of the B telescopic boom 64 or the pull ring 65. More importantly, the take-up and extend roller 52 is installed on the other side of the chassis base 1. When the counterweight mechanism 2 provides support, the chassis base 1 acts as the fulcrum. The pull cable 53 on the take-up and extend roller 52 better balances the downward pressure on the lifting boom 6. Compared to the take-up and extend roller 52 installed on the lifting boom 6, changing the stress point of the take-up and extend roller 52 reduces the load on the lifting boom 6, thus better ensuring the stable use of the lifting boom 6. A rigid support rod 62 is fixedly installed on the top of the lifting boom 6. The rigid support rod 62 reduces the deformation of the lifting boom 6 caused by the force. The lifting frame 67 includes two sets of wire rope pulleys 671 fixedly mounted via bearings, a wire rope 673 wound onto the wire rope pulleys 671, and a lifting hook 672 fixedly connected to the wire rope 673 for lifting. The object is lifted and secured using the lifting hook 672, and then lifted in conjunction with the lifting boom 6. Both the wire rope pulleys 671 and the take-up / unwind rollers 52 are equipped with drive motors at one end, and are controlled and adjusted via wires and an electrical control system. The counterweight mechanism 2 includes a connecting frame 23 fixedly mounted at the bottom of the chassis 1, with four sets of support mechanisms 3 fixedly mounted on the outside of the connecting frame 23.

[0027] The support mechanism 3 includes a support plate 31 fixedly installed on the side of the connecting frame 23, a support leg 32 flipped and installed at the end of the support plate 31, and a support block 34 flipped and installed at the end of the support leg 32. The bottom of the support block 34 is connected to the base frame 33, and the bottom of the support block 34 is connected to the inside of the base frame 33 through a shock-absorbing spring assembly 35. The support leg 32 supports the bottom of the chassis 1, increasing the support area of ​​the bottom of the crane, reducing the long-term pressure deformation of the chassis 1, and reducing the risk of center of gravity shift. The counterweight mechanism 2 also includes a counterweight seat 21 fixedly installed at the bottom of the connecting frame 23 and a parking block 22 fixedly installed at the bottom of the counterweight seat 21. The parking block 22 cooperates with the support mechanism 3 to ensure the stability of the chassis during the use of the crane.

[0028] The crane is positioned and supported by the counterweight mechanism 2 and support mechanism 3 at the bottom of the chassis base 1. The lifting mechanism 4 is raised and lowered by the hydraulic cylinder 11 to adjust the height of the boom 6. The hydraulic rod at the bottom of the tilting shaft 61, which is used to tilt the boom 6, is pushed by the electrical control system inside the crane's rotating platform 42. This allows the boom 6 to adjust its angle under the action of the tilting shaft 61. Depending on the position and distance of the object to be lifted, either the A telescopic boom 63 or the B telescopic boom 64 is selected for lifting. At the same time, the pull steel cable 53 on the take-up and release roller 52 is fixedly connected to the corresponding pull ring 65. Finally, the wire rope wheel assembly 671 is driven to rotate by the electrical control system to take up and release the hook 672 and lift the object.

[0029] All technical features in this embodiment can be freely combined according to actual needs.

[0030] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A multi-mode telescopic boom crane comprising a chassis base (1), a counterweight mechanism (2) fixedly installed at the bottom of the chassis base (1), a hoisting mechanism (4) installed at the top of the chassis base (1), and a hoisting arm (6) installed at the top of the hoisting mechanism (4), characterized in that, A hydraulic pump box (5) is fixedly installed at the top of the crane mechanism (4) at the end of the boom (6). A telescopic cylinder (51) is fixedly installed at the top of the hydraulic pump box (5). A take-up and release roller (52) is fixedly installed at the top of the telescopic cylinder (51). An A telescopic arm (63) is installed at the end of the boom (6) by a cylinder. A B telescopic arm (64) is installed at the end of the A telescopic arm (63) by a cylinder. Pull rings (65) are fixedly installed on both the A telescopic arm (63) and the B telescopic arm (64). The take-up and release roller (52) and the pull ring (65) are connected and tightened by a pulling steel cable (53). A lifting frame (67) is fixedly installed at the end of the B telescopic arm (64). The counterweight mechanism (2) includes a connecting frame (23) fixedly installed at the bottom of the chassis base (1). Four sets of support mechanisms (3) are fixedly installed on the outside of the connecting frame (23).

2. Multi-mode telescopic boom crane according to claim 1, characterized in that: A docking frame (121) is welded and installed on one side of the chassis base (1), and a welding frame (66) is fixedly installed on the lifting arm (6). A diagonal bracing hydraulic cylinder (12) is connected between the bottom of the welding frame (66) and the docking frame (121). The diagonal bracing hydraulic cylinder (12) and the welding frame (66) are connected and installed through a rotating shaft (661).

3. Multi-mode telescoping jib crane according to claim 1, characterized in that: A hydraulic cylinder (11) is installed on the top of the chassis base (1), and the top of the hydraulic cylinder (11) is fixedly installed with the lifting mechanism (4). The top of the hydraulic cylinder (11) is provided with a push end (13). The lifting mechanism (4) includes a rotating platform (42) for supporting the lifting arm (6) and an operating table (41) fixedly installed on one side of the rotating platform (42). One end of the lifting arm (6) is connected to the top of the rotating platform (42) through a flipping shaft (61).

4. A multi-mode telescoping jib crane according to claim 1, characterized in that: The top of the lifting arm (6) is fixedly installed with a rigid support rod (62), and the lifting frame (67) includes two sets of wire rope pulleys (671) fixedly installed by bearings, a wire rope (673) wound on the wire rope pulleys (671), and a lifting hook (672) fixedly connected to the wire rope (673) for lifting.

5. Multi-mode telescoping jib crane according to claim 1, characterized in that: The support mechanism (3) includes a support plate (31) fixedly installed on the side of the connecting frame (23), a support leg (32) flipped and installed at the end of the support plate (31), and a support block (34) flipped and installed at the end of the support leg (32). The bottom of the support block (34) is connected to the base frame (33), and the bottom of the support block (34) is connected to the inside of the base frame (33) through a shock-absorbing spring assembly (35).

6. Multi-mode telescoping jib crane according to claim 1, characterized in that: The counterweight mechanism (2) further includes a counterweight seat (21) fixedly installed at the bottom of the connecting frame (23) and a parking block (22) fixedly installed at the bottom of the counterweight seat (21).

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