Large efficient hydraulic lifting device for tower crane

Abstract

The utility model relates to tower crane technical field, especially large -scale efficient hydraulic pressure jacking device for tower crane, including vertical main body frame, the vertical main body frame includes the upper layer frame, middle layer frame and lower layer frame who links together, be provided with bolt automatic extension mechanism in the upper layer frame, middle layer frame one side is provided with standard section introduction entrance, standard section introduction entrance is connected with the pull mechanism and the bearing platform, the fixed length support rod and telescopic support rod of swingable are arranged between middle layer frame and lower layer frame, the pull mechanism includes horizontal guide rail and symmetrical embrace based on horizontal guide rail movement, the moving range of symmetrical embrace covers the above of lower layer frame and bearing platform, the utility model effectively speeds up the loading speed of standard section, plays good longitudinal direction and transverse limiting effect in the process of jacking, creates the condition for the further improvement of jacking speed, sets up bolt automatic extension mechanism, need not manual installation and disassembly bolt, improves operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tower crane technology, and in particular to a large-scale, high-efficiency hydraulic jacking device for tower cranes. Background Technology

[0002] Tower cranes are widely used in construction, undertaking important tasks such as hoisting building materials. As building heights increase, tower cranes need to be raised continuously to meet construction demands, thus placing higher demands on their lifting capacity and efficiency. The performance of the lifting device directly affects construction efficiency and operational safety. If the lifting speed is slow, completing a single lifting operation often takes a long time, severely impacting construction progress. Without auxiliary lifting devices, significant manual intervention is required, failing to meet the high-efficiency construction needs of large-scale building projects. Furthermore, poor stability during the lifting process can easily lead to swaying and shifting of the tower, affecting construction safety.

[0003] With increasing technical requirements, higher demands are being placed on the lifting efficiency and stability of tower cranes. Utility Model Content

[0004] The purpose of this invention is to provide a large-scale, high-efficiency hydraulic jacking device for tower cranes, so as to improve the jacking efficiency of tower cranes, ensure construction safety, and reduce maintenance costs.

[0005] To achieve the above objectives, the solution adopted by this utility model is as follows:

[0006] A large, high-efficiency hydraulic jacking device for tower cranes includes a vertical main frame, which comprises an upper frame, a middle frame, and a lower frame connected together.

[0007] The upper frame is equipped with an automatic bolt extension mechanism; the middle frame is equipped with a standard section inlet on one side, and the standard section inlet is connected to a clamping mechanism and a support platform; the middle frame and the lower frame are equipped with swingable fixed-length support rods and telescopic support rods.

[0008] The clamping mechanism includes a transverse guide rail and symmetrical clamps that move based on the transverse guide rail. The range of movement of the symmetrical clamps covers the area above the lower frame and the support platform.

[0009] Furthermore, the automatic bolt extension mechanism includes a connecting base sleeve fixed to the upper frame, in which bolts are movably disposed vertically, and the lower part of the bolts is threaded while the upper part is connected to a telescopic cylinder.

[0010] Furthermore, the transverse guide rail extends through the inner and outer sides of the standard section inlet, and the symmetrical clamps are movably connected to the transverse guide rail via a slide block. Each symmetrical clamp includes two parallel fixed sleeves, and the fixed sleeves are connected to a rotating clamping arm via a rotating cylinder.

[0011] Furthermore, the upper ends of both the fixed-length struts and the telescopic struts are hinged to the middle frame. The number of fixed-length struts is twice that of the telescopic struts, with every two fixed-length struts sandwiching one telescopic strut in the middle.

[0012] Furthermore, the telescopic strut includes a hydraulic lifting cylinder and a lifting clamp connected to its lower end.

[0013] Furthermore, the rotating arm is provided at both the front and rear ends of the fixed sleeve, and the upper and lower fixed sleeves are connected by an X-shaped support.

[0014] Furthermore, a guide device is provided at the inner corner of the lower frame. The guide device includes a corner seat, and a support shaft is laterally connected to the inner corner of the corner seat. A V-groove guide wheel is connected through the support shaft, and an adjustment spring is clamped between the two sides of the V-groove guide wheel and the two ends of the support shaft.

[0015] Furthermore, the bottom ends of the lifting feet and the fixed-length support rods are both provided with "𠃍"-shaped notches facing the center of the lower frame.

[0016] Furthermore, both the middle and lower frames are equipped with personnel passageways on their periphery, and the two personnel passageways are connected by a vertical ladder.

[0017] Furthermore, the number of guide devices is ≥2 groups, with 4 guide devices in each group and set at the same height.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This utility model uses a transverse guide rail to drive the symmetrical clamps and standard sections to move quickly to the standard section inlet, reducing manual intervention, effectively speeding up the installation of standard sections, and improving the lifting efficiency of tower cranes.

[0020] This utility model uses V-groove guide wheels to tightly engage with the four corners of the standard tower section, providing good longitudinal guidance and lateral limiting during the jacking process. This effectively prevents the main frame from swaying and shifting, ensuring the stability of the jacking operation and creating conditions for further improvement in jacking speed.

[0021] This utility model features an automatic bolt extension mechanism. A telescopic cylinder moves the bolts up or down, and the bolts and nuts work together to fix the vertical main frame and standard sections. This eliminates the need for manual installation and removal of bolts, thus improving the efficiency of lifting operations. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0025] Figure 4 This is a side view of the present invention.

[0026] Figure 5 This is a front structural diagram of the present invention;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0028] Figure 7 This is a schematic diagram of the clamping mechanism in this utility model;

[0029] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0030] Figure 9 This is a schematic diagram of the telescopic strut structure in this utility model;

[0031] Figure 10 This is a schematic diagram of the guiding device in this utility model.

[0032] In the diagram: 1. Vertical main frame; 1a. Upper frame; 1b. Middle frame; 1c. Lower frame; 2. Automatic bolt extension mechanism; 2a. Connecting base sleeve; 2b. Bolt; 2c. Telescopic cylinder; 3. Standard section inlet; 4. Pulling mechanism; 4a. Transverse guide rail; 4b. Symmetrical clamp; 4b-1. Fixed sleeve; 4b-2. Rotating arm; 4b-3. X-shaped support frame; 5. Bearing platform; 6. Fixed-length support rod; 7. Telescopic support rod; 7a. Hydraulic lifting cylinder; 7b. Lifting foot; 8. Guide device; 8a. Corner seat; 8b. Support shaft; 8c. V-groove guide wheel; 8d. Adjusting spring; 9. Personnel passageway; 10. Vertical ladder. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present utility model.

[0034] Example: Figures 1-6 As shown, a large-scale, high-efficiency hydraulic jacking device for tower cranes includes a vertical main frame 1. The vertical main frame 1 includes an upper frame 1a, a middle frame 1b, and a lower frame 1c connected together. The whole is made of high-strength steel and has a triangular stable support structure inside. The top of the upper frame 1a is connected to the rotating disk of the tower crane.

[0035] Specifically, the upper frame 1a is equipped with an automatic bolt extension mechanism 2. The automatic bolt extension mechanism 2 includes a connecting base sleeve 2a fixed to the upper frame 1a. A bolt 2b is movably installed in the connecting base sleeve 2a. The lower part of the bolt 2b is threaded and the upper part is connected to a telescopic cylinder 2c. The telescopic cylinder 2c drives the bolt 2b to move up or down. The bolt 2b and the nut cooperate to fix the vertical main frame 1 and the standard section. There is no need for manual installation and removal of the bolt 2b, which improves work efficiency.

[0036] Specifically, a standard section inlet 3 is provided on one side of the middle frame 1b. The standard section inlet 3 is connected to a clamping mechanism 4 and a bearing platform 5. The bearing platform 5 extends outward from the standard section inlet 3 towards the outside of the middle frame 1b; combined with Figure 7 , Figure 8 As shown, the clamping mechanism 4 includes a transverse guide rail 4a and symmetrical clamps 4b that move based on the transverse guide rail 4a. The movement range of the symmetrical clamps 4b covers the upper part of the lower frame 1c and the support platform 5. The transverse guide rail 4a runs through the inner and outer sides of the standard section inlet 3. The symmetrical clamps 4b are movably connected to the transverse guide rail 4a through a sliding seat. Each symmetrical clamp 4b includes two parallel fixed sleeves 4b-1. The fixed sleeves 4b-1 are connected to rotating clamping arms 4b-2 through a rotating cylinder. The rotating clamping arms 4b-2 are set at both ends of the fixed sleeves 4b-1. The upper and lower fixed sleeves 4b-1 are connected by an X-shaped support 4b-3. The rotating clamping arms 4b-2 on both sides rotate in opposite directions to clamp the standard section. The transverse guide rail 4a drives the symmetrical clamps 4b and the standard section to move quickly into the standard section inlet 3, reducing manual intervention, effectively speeding up the loading of the standard section, and improving the lifting efficiency of the tower crane.

[0037] Specifically, a swingable fixed-length support rod 6 and a telescopic support rod 7 are provided between the middle frame 1b and the lower frame 1c; the upper ends of both the fixed-length support rod 6 and the telescopic support rod 7 are hinged to the middle frame 1b. The number of fixed-length support rods 6 is twice that of the telescopic support rods 7, and every two fixed-length support rods 6 sandwich one telescopic support rod 7 in the middle. Figure 9 As shown, the telescopic strut 7 includes a hydraulic lifting cylinder 7a and a lifting clamp 7b connected to its lower end. The bottom ends of the lifting clamp 7b and the fixed-length strut 6 are both provided with a "𠃍"-shaped concave notch facing the center of the lower frame 1c. The "𠃍"-shaped notch better connects with the lower standard section frame, and the support point is stable. The hydraulic lifting cylinder 7a is powered by a hydraulic pump station. The piston rod in the hydraulic lifting cylinder 7a is connected to the lifting clamp 7b and is used to extend downwards and push the vertical main frame 1 upwards along the tower body. During the lifting operation, the contact between the fixed-length strut 6 and the telescopic strut 7 and the lower standard section frame switches back and forth until the standard section inlet 3 is cleared with enough space to accommodate a new standard section.

[0038] In addition, a feature is provided at the inner corner of the lower frame 1c. Figure 10 The guide device 8 shown has at least two sets, with four guide devices 8 in each set, all at the same height. The height difference between any two adjacent sets of guide devices 8 is 1 to 1.5 meters. Each guide device 8 includes a corner seat 8a, with a support shaft 8b laterally connected to the inner corner of the corner seat 8a. A V-groove guide wheel 8c is threaded through the support shaft 8b. Adjusting springs 8d are clamped between the two sides of the V-groove guide wheel 8c and the two ends of the support shaft 8b, allowing the position of the V-groove guide wheel 8c to be adaptively adjusted. Through this configuration, the V-groove guide wheel 8c engages tightly with the four corners of the standard tower section, providing good longitudinal guidance and lateral limiting during the jacking process. This effectively prevents the main frame 1 from swaying or shifting, ensuring the stability of the jacking operation and creating conditions for further increases in jacking speed.

[0039] In this embodiment, both the middle frame 1b and the lower frame 1c are provided with personnel passage corridors 9 on their periphery, and the two personnel passage corridors 9 are connected by a vertical ladder 10; protective railings and safety nets are provided around the corridors 9 and the vertical ladder 10 to provide a safe working environment for the operators.

[0040] Further optimization involves installing rollers on the support platform 5 to reduce friction as the standard section moves on the platform, accelerating the insertion speed and improving lifting efficiency; the hydraulic pump station adopts a dual-pump parallel structure, where both pumps work simultaneously under heavy loads to provide sufficient power and achieve efficient hydraulic power output.

[0041] This utility model discloses a large-scale, high-efficiency hydraulic jacking device for tower cranes. During operation, the nut is loosened, bolt 2b rises, releasing the lock between the upper frame 1a and the installed standard section. The jacking foot 7b presses against the support point of the lower standard section. The control system activates the hydraulic jacking cylinder 7a, and hydraulic oil enters the cylinder through pipelines, pushing the piston rod of 7a to extend, lifting the vertical main frame 1 to a certain height. The control system stops the hydraulic pump, the piston rod of 7a locks, and the fixed-length support rod 6 swings downwards into the lower frame 1c for support. After the support point of the jacking foot 7b is moved upwards, the hydraulic jacking cylinder 7a continues to operate. This process repeats until the predetermined height is reached. The pulling mechanism 4 then quickly moves the newly added standard section on the support platform 5 into place, completing one lifting operation. The bottom end of the newly added standard section connects to the top end of the lower standard section. This process repeats until the tower crane reaches a certain height. Finally, the bolt 2b descends via the automatic bolt extension mechanism 2, achieving a fixed connection between the top of the highest standard section and the upper frame 1a.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. It should be noted that for those skilled in the art, any changes, modifications or additions without departing from the concept of the present utility model should fall within the protection scope of the present utility model.

Claims

1. A large, high-efficiency hydraulic jacking device for tower cranes, characterized in that: It includes a vertical main frame (1), which includes an upper frame (1a), a middle frame (1b) and a lower frame (1c) connected to each other; The upper frame (1a) is provided with an automatic bolt extension mechanism (2); the middle frame (1b) is provided with a standard section inlet (3) on one side, and the standard section inlet (3) is connected to a clamping mechanism (4) and a support platform (5); the middle frame (1b) and the lower frame (1c) are provided with a swingable fixed-length support rod (6) and a telescopic support rod (7); The clamping mechanism (4) includes a transverse guide rail (4a) and a symmetrical clamp (4b) that moves based on the transverse guide rail (4a). The range of movement of the symmetrical clamp (4b) covers the area above the lower frame (1c) and the support platform (5).

2. The large-scale, high-efficiency hydraulic jacking device for tower cranes according to claim 1, characterized in that: The automatic bolt extension mechanism (2) includes a connecting base sleeve (2a) fixed to the upper frame (1a), and a bolt (2b) is movably disposed in the connecting base sleeve (2a). The lower part of the bolt (2b) is threaded and the upper part is connected to a telescopic cylinder (2c).

3. The large-scale, high-efficiency hydraulic jacking device for tower cranes according to claim 1, characterized in that: The transverse guide rail (4a) passes through the inner and outer sides of the standard section inlet (3). The symmetrical clamp (4b) is movably connected to the transverse guide rail (4a) through a slide block. Each symmetrical clamp (4b) includes two parallel fixed sleeves (4b-1) arranged on the upper and lower sides. The fixed sleeve (4b-1) is connected to a rotating clamp arm (4b-2) through a rotating cylinder.

4. The large-scale, high-efficiency hydraulic jacking device for tower cranes according to claim 1, characterized in that: The upper ends of the fixed-length support rod (6) and the telescopic support rod (7) are hinged to the middle frame (1b). The number of fixed-length support rods (6) is twice that of telescopic support rods (7), and every two fixed-length support rods (6) sandwich one telescopic support rod (7) in the middle.

5. The large-scale, high-efficiency hydraulic jacking device for tower cranes according to claim 4, characterized in that: The telescopic strut (7) includes a hydraulic lifting cylinder (7a) and a lifting clamp (7b) connected to its lower end.

6. The large-scale, high-efficiency hydraulic jacking device for tower cranes according to claim 3, characterized in that: The rotating arm (4b-2) is provided at both the front and rear ends of the fixed sleeve (4b-1), and the upper and lower fixed sleeves (4b-1) are connected by an X-shaped support (4b-3).

7. The large-scale, high-efficiency hydraulic jacking device for tower cranes according to claim 1, characterized in that: The lower frame (1c) is provided with a guide device (8) at the inner corner. The guide device (8) includes a corner seat (8a). A support shaft (8b) is laterally connected to the inner corner of the corner seat (8a). A V-groove guide wheel (8c) is connected through the support shaft (8b). An adjusting spring (8d) is sandwiched between the two sides of the V-groove guide wheel (8c) and the two ends of the support shaft (8b).

8. The large-scale, high-efficiency hydraulic jacking device for tower cranes according to claim 5, characterized in that: The bottom ends of the lifting foot (7b) and the fixed-length support rod (6) are both provided with "𠃍" shaped slots facing the center of the lower frame (1c).

9. The large-scale, high-efficiency hydraulic jacking device for tower cranes according to claim 1, characterized in that: Both the middle frame (1b) and the lower frame (1c) are provided with personnel passage corridors (9) on their periphery, and the two personnel passage corridors (9) are connected by a vertical ladder (10).

10. The large-scale, high-efficiency hydraulic jacking device for tower cranes according to claim 7, characterized in that: The number of guide devices (8) is ≥2 groups, and each group has 4 guide devices (8) set at the same height.

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