A crane hoisting device for a construction site

Abstract

The present invention patent discloses a hoisting device for a construction site crane, comprising a mounting base, a transmission device, a clamping bracket, and a fixing device. The upper end of the mounting base is provided with a fixing flange, the lower end of the mounting base is provided with a rotating plate, the lower end of the rotating plate is provided with a fixed housing, a transmission device is provided in the middle portion of the interior of the fixed housing, the transmission device comprises a transmission motor located on one side of the interior of the fixed housing, and a first transmission gear is provided at the upper end of the transmission motor, and a second transmission gear is provided at the lower end of the first transmission gear. Beneficial effects: effectively ensures stability and safety during hoisting of materials with complex shapes, such as pipes, plates, building materials, etc., and effectively improves the stability and applicability of the device during use.

Description

Technical Field

[0001] The invention relates to the technical field of construction machinery, specifically, to a crane hoisting device for a construction site. Background Art

[0002] A crane is a multi-action lifting machine that lifts and transports heavy objects vertically and horizontally within a specific range. It is also known as an overhead crane, overhead crane, or overhead crane. Some lifting equipment features intermittent motion, meaning that the corresponding mechanisms for retrieving, transporting, and unloading operations alternate within a single cycle. Cranes are becoming increasingly widespread in the market. Because they often cause accidents while lifting without outriggers and traveling while carrying heavy objects, they are also faster than crawler cranes. They offer stable operation, large lifting capacity, and can travel while carrying heavy objects within a specific range.

[0003] Cranes currently used on construction sites usually use hooks, hook locks, etc. to lift construction materials. However, there are many materials that need to be lifted on construction sites, and their shapes are relatively complex, such as pipes, plates, building materials, etc. Ordinary hook locks and hooks are difficult to maintain stability and safety during lifting, and are easily affected by natural wind forces, which can easily lead to dangers when used. Summary of the Invention

[0004] In response to the problems in the related technology, the patent of this invention proposes a construction site crane lifting device to overcome the above-mentioned technical problems existing in the existing related technology.

[0005] To this end, the specific technical solutions adopted by the present invention are as follows:

[0006] A lifting device for a construction site crane includes a mounting base, a transmission device, a clamping bracket, and a fixing device. A fixing flange is provided at the upper end of the mounting base, a rotating plate is provided at the lower end of the mounting base, a fixed housing is provided at the lower end of the rotating plate, a transmission device is provided at the middle part of the interior of the fixed housing, the transmission device includes a transmission motor located on one side of the interior of the fixed housing, and a first transmission gear is provided at the upper end of the transmission motor, and a second transmission gear is provided at the lower end of the first transmission gear. A connecting shaft passing through the fixed housing is provided on the side of the interior of the fixed housing away from the transmission motor, one end of the connecting shaft is connected to the clamping bracket, and a fixing device is provided at the lower end of the clamping bracket, and balancing brackets connected to the clamping bracket are provided on both sides of the mounting base.

[0007] Furthermore, the clamping bracket includes a first bracket located on both sides of the fixed housing, one end of the first bracket is provided with a fixed rotating shaft connected to the fixed housing, and the opposite end of the first bracket on both sides is provided with a matching cooperative gear, and one of the first brackets is connected to the connecting shaft, and one end of the connecting shaft is provided with a driving motor connected to the fixed housing, and a first cross beam connected to the balance bracket is provided in the middle of the upper end of the first bracket, and a second cross beam is provided in the middle of the lower end of the first bracket, and a second bracket is provided in the middle of the second cross beam.

[0008] Furthermore, a connecting hole matching the second cross beam is provided in the middle of the second bracket, and a driving cross rod is provided at one end of the second bracket, and a driving bracket is provided at one end of the driving cross rod, and a driving device is provided at the end of the driving bracket away from the driving cross rod, a first screw is provided at the upper end of the driving device, and a threaded sleeve connected to the fixed housing is provided in the middle of the upper end of the first screw, and the upper end of the first screw passes through the fixed housing and is connected to the second transmission gear, and a connecting bracket is provided at the lower end of the second bracket.

[0009] Furthermore, the driving device includes a connecting frame movably connected to the first screw, a fixing rod passing through the first screw and connected to the fixed housing is provided in the middle part of the connecting frame, and a trapezoidal driving block in contact with the driving bracket is provided at the lower end of the fixing rod, and limiting guide cylinders cooperating with the driving bracket are provided at both ends of the connecting frame.

[0010] Furthermore, a connecting shaft connected to the second bracket is provided in the middle of the connecting bracket, and a rotating mechanism is provided in the middle of the lower end of the connecting bracket, a fixing device is provided at the lower end of the rotating mechanism, and a balancing chamber is provided at the upper end of the rotating mechanism, and a hydraulic drive pipe is provided at the upper end of the balancing chamber, and a hydraulic pump connected to the rotating plate is provided at the end of the hydraulic drive pipe away from the balancing chamber.

[0011] Furthermore, the rotating mechanism includes a driving cylinder connected to the connecting bracket, a second screw is provided in the middle of the lower end of the driving cylinder, and a threaded sleeve matching the second screw is provided at the lower end of the driving cylinder, and a conduit connected to the balancing chamber is provided at the upper end of the driving cylinder, and a piston plate is provided in the middle of the driving cylinder.

[0012] Furthermore, the fixing device includes a rotating frame connected to the second screw, and a positioning hole is provided on one side of the rotating frame, and a fixed shaft is provided in the middle of the positioning hole, and a mounting groove is provided on the side of the rotating frame away from the positioning hole, and a falling bracket is provided in the middle of the mounting groove, and the positioning holes of the fixing devices on both sides are staggered.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. When the device is in use, the device is fixed to the upper end of the crane through the setting of the mounting base and the fixing flange. The setting of the rotating plate makes it easy to change the direction of the lifting device when in use, thereby effectively improving the applicability and use environment of the device, and the setting of the fixed housing facilitates the installation and fixation of the transmission device, and the setting of the transmission device makes the clamping bracket move relative to each other, so that the brackets on both sides cooperate with each other to achieve the effect of clamping objects. At the same time, the setting of the fixing device can fix and clamp materials of different shapes and sizes, thereby effectively improving the stability and safety of the device, thereby effectively preventing the danger caused by the detachment of materials, and facilitating the clamping and release of the auxiliary device through the setting of the transmission motor and the relative setting between the first transmission gear and the second transmission gear. The setting of the connecting shaft is driven by the setting of the drive motor to drive the connecting shaft so that the clamping brackets on both sides move relative to each other to achieve the purpose of clamping and releasing, and the setting of the balancing bracket improves the stability of the device, thereby effectively improving the safety of the device.

[0015] 2. Fix the first bracket by setting a fixed rotating shaft, rotate the connecting shaft by setting a driving motor, thereby rotating the first bracket, and at the same time, the first brackets on both sides rotate synchronously relative to each other under the influence of the cooperative gears on both sides, thereby effectively making the forces applied when clamping objects on both sides the same, thereby achieving the effect of the driving device clamping materials and building pipes, etc., effectively improving the stability of the device, and connecting the device to the balance bracket when in use to improve the stability of the device, and facilitating the fixing of the second bracket by setting the second beam, thereby effectively extending the use radius of the device, thereby improving the use efficiency of the device while avoiding safety reduction, facilitating the installation of the second bracket by setting the connecting hole, and rotating the first transmission gear by setting the transmission motor, thereby The setting of the transmission gear causes the first screw to rotate, thereby causing the first screw to move upward or downward along the threaded sleeve, thereby moving the driving device. The setting of the driving device causes the driving brackets on both sides to move relative to each other, thereby achieving the effect of making the second bracket move relative to each other, thereby achieving the clamping effect, and the setting of the driving device causes the second brackets on both sides to move synchronously, thereby improving the stability of the device. The effect of the connecting frame moving up and down with the rotation of the first screw is achieved. Due to the effect of the fixed connection between the fixing rod and the fixed housing, when the connecting frame moves, the driving brackets at both ends are effectively moved relative to each other through the setting of the trapezoidal driving block, and due to the setting of the spring in the middle of the driving bracket, it is always in contact with the trapezoidal driving block, and the setting of the limiting guide cylinder is used to guide the driving bracket while preventing the driving bracket from falling off.

[0016] 3. The rotating mechanism is fixed by setting a connecting bracket. The rotating mechanism makes the fixing device easy to rotate through the setting of the rotating mechanism, so that the device can use the corresponding device while clamping objects of different shapes, thereby improving the stability of the device. The hydraulic oil is pumped out by the setting of the hydraulic pump so that the hydraulic oil enters the balance chamber through the setting of the hydraulic drive pipe, and then the hydraulic oil enters the interior of the rotating mechanism, thereby rotating it, and then rotating the fixing device. The hydraulic oil enters the interior of the driving cylinder through the conduit, and the piston plate is pushed by the effect of the hydraulic oil, thereby pushing the second screw through the piston plate to rotate the second screw, thereby rotating the fixing device at its lower end. When clamping cylindrical materials such as pipes, the fixed shaft is squeezed into the interior of the positioning hole through the setting of the fixed shaft, so that the two correspond to each other, thereby achieving the effect of clamping the pipe. Through the setting of the mounting groove and the drop bracket, the device fixes the plate through the setting of the drop bracket when clamping the plate, thereby effectively improving the stability of the device and the safety of the device during clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic structural diagram of a construction site crane hoisting device according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the first bracket of a construction site crane hoisting device according to an embodiment of the present invention. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the structure of the first bracket of a construction site crane hoisting device according to an embodiment of the present invention. Figure 2 ;

[0021] Figure 4 This is a schematic structural diagram of a second bracket of a construction site crane hoisting device according to an embodiment of the present invention;

[0022] Figure 5 This is a structural schematic diagram of a rotating device of a construction site crane hoisting device according to an embodiment of the present invention.

[0023] In the picture:

[0024] 1. Mounting base; 2. Clamping bracket; 3. Fixing device; 4. Fixing flange; 5. Rotating plate; 6. Fixed housing; 7. Transmission motor; 8. First transmission gear; 9. Second transmission gear; 10. Connecting shaft; 11. Balancing bracket; 12. First bracket; 13. Fixed rotating shaft; 14. Coordinating gear; 15. First crossbeam; 16. Second crossbeam; 17. Second bracket; 18. Connecting hole; 19. Drive crossbar; 20. Drive bracket 21. First screw; 22. Threaded sleeve; 23. Connecting bracket; 24. Connecting frame; 25. Fixed rod; 26. Trapezoidal drive block; 27. Limiting guide cylinder; 28. Connecting shaft; 29. ​​Threaded inner cylinder; 30. Balance chamber; 31. Hydraulic drive pipe; 32. Hydraulic pump; 33. Drive cylinder; 34. Second screw; 35. Conduit; 36. Rotating frame; 37. Positioning hole; 38. Fixed shaft; 39. Mounting slot; 40. Drop bracket. DETAILED DESCRIPTION

[0025] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention. They are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components. Example 1

[0026] For example Figures 1 to 5 Shown:

[0027] The present invention provides a hoisting device for a construction site crane, which includes a mounting base 1, a transmission device, a clamping bracket 2, and a fixing device 3. The upper end of the mounting base 1 is provided with a fixing flange 4, the lower end of the mounting base 1 is provided with a rotating plate 5, the lower end of the rotating plate 5 is provided with a fixed housing 6, and the middle part of the inner part of the fixed housing 6 is provided with a transmission device. The device is fixed to the upper end of the crane by the arrangement of the mounting base 1 and the fixing flange 4. The arrangement of the rotating plate 5 makes it easy to change the direction of the hoisting device when in use, thereby effectively improving the applicability and use environment of the device, and the arrangement of the fixed housing 6 facilitates the installation and fixation of the transmission device, and thus the arrangement of the transmission device makes the clamping bracket 2 move relative to each other, so that the brackets on both sides cooperate with each other to achieve the effect of clamping objects, and at the same time, the arrangement of the fixing device 3 can fix and clamp materials of different shapes and sizes, thereby effectively improving the stability and safety of the device, thereby effectively preventing materials from being stuck. To avoid the danger caused by separation, the transmission device includes a transmission motor 7 located on one side of the interior of the fixed housing 6, and a first transmission gear 8 is provided at the upper end of the transmission motor 7, and a second transmission gear 9 is provided at the lower end of the first transmission gear 8. A connecting shaft 10 that passes through the fixed housing 6 is provided on the side of the interior of the fixed housing 6 away from the transmission motor 7. One end of the connecting shaft 10 is connected to the clamping bracket 2, and a fixing device 3 is provided at the lower end of the clamping bracket 2. Balance brackets 11 connected to the clamping bracket 2 are provided on both sides of the mounting base 1. The setting of the transmission motor 7 and the relative setting between the first transmission gear 8 and the second transmission gear 9 facilitate the clamping and release of the auxiliary device. The setting of the connecting shaft 10 drives the connecting shaft 10 through the setting of the drive motor so that the clamping brackets 2 on both sides move relative to each other to achieve the purpose of clamping and releasing. The setting of the balance bracket 11 improves the stability of the device, thereby effectively improving the safety of the device.

[0028] Detailed usage and function of the first embodiment: When the device is in use, the device is fixed to the upper end of the crane by the arrangement of the mounting base 1 and the fixing flange 4. The arrangement of the rotating plate 5 makes it easy to change the direction of the lifting device when in use, thereby effectively improving the applicability and usage environment of the device. The arrangement of the fixed housing 6 facilitates the installation and fixation of the transmission device, and the arrangement of the transmission device causes the clamping bracket 2 to move relative to each other, so that the brackets on both sides cooperate with each other to achieve the effect of clamping objects. At the same time, the arrangement of the fixing device 3 allows fixed clamping of materials of different shapes and sizes, thereby effectively improving the stability and safety of the device, thereby effectively preventing the danger caused by the detachment of materials. The arrangement of the transmission motor 7 and the relative arrangement between the first transmission gear 8 and the second transmission gear 9 facilitate the clamping and release of the auxiliary device. The arrangement of the connecting shaft 10 is driven by the drive motor to drive the connecting shaft 10 so that the clamping brackets 2 on both sides move relative to each other to achieve the purpose of clamping and releasing. The arrangement of the balancing bracket 11 improves the stability of the device, thereby effectively improving the safety of the device. Example 2

[0029] For example Figures 1 to 5 Shown:

[0030] The present invention provides a construction site crane hoisting device, wherein the clamping bracket 2 includes a first bracket 12 located on both sides of the fixed housing 6, one end of the first bracket 12 is provided with a fixed rotating shaft 13 connected to the fixed housing 6, and the opposite end of the first brackets 12 on both sides is provided with a matching cooperative gear 14, and one of the first brackets 12 is connected to the connecting shaft 10, and one end of the connecting shaft 10 is provided with a driving motor connected to the fixed housing 6, and a first crossbeam 15 connected to the balancing bracket 11 is provided in the middle of the upper end of the first bracket 12, and a second crossbeam 16 is provided in the middle of the lower end of the first bracket 12, and a second crossbeam 16 is provided in the middle of the second crossbeam 16. The bracket 17 fixes the first bracket 12 by setting the fixed rotating shaft 13, and rotates the connecting shaft 10 by setting the driving motor, thereby rotating the first bracket 12, and at the same time, the first brackets 12 on both sides are caused to rotate synchronously relative to each other at the same time under the influence of the cooperative gears 14 on both sides, thereby effectively making the forces applied when clamping objects on both sides the same, thereby achieving the effect of the driving device clamping materials and construction pipes, etc., effectively improving the stability of the device, and through the setting of the first crossbeam 15, the device is connected to the balance bracket 11 when in use, thereby improving the stability of the device, and through the setting of the second crossbeam 16, it is convenient to fix the second bracket 17, thereby effectively extending the use radius of the device, thereby improving the use efficiency of the device while avoiding reduced safety. A connecting hole 18 is provided in the middle of the second bracket 17 to match the second crossbeam 16, and a driving crossbar 19 is provided at one end of the second bracket 17, and a driving bracket 20 is provided at one end of the driving crossbar 19, and a driving device is provided at the end of the driving bracket 20 away from the driving crossbar 19, and a first screw 21 is provided at the upper end of the driving device, and a threaded sleeve 22 connected to the fixed housing 6 is provided at the middle of the upper end of the first screw 21, and the upper end of the first screw 21 passes through the fixed housing 6 and is connected to the second transmission gear 9, and the lower end of the second bracket 17 A connecting bracket 23 is provided at the end, and the setting of the connecting hole 18 facilitates the installation of the second bracket 17. The first transmission gear 8 is rotated by the setting of the transmission motor 7, and the first screw 21 is rotated by the setting of the second transmission gear 9, so that the first screw 21 moves upward or downward along the threaded sleeve 22, thereby moving the driving device, and the driving brackets 20 on both sides are moved relative to each other through the setting of the driving device, so as to achieve the effect of relative movement of the second bracket 17, thereby achieving the clamping effect, and the second brackets 17 on both sides are moved synchronously through the setting of the driving device, thereby improving the stability of the device.The driving device includes a connecting frame 24 movably connected to the first screw 21, and a fixing rod 25 is provided in the middle part of the inner part of the connecting frame 24, which passes through the first screw 21 and is connected to the fixed housing 6, and the lower end of the fixing rod 25 is provided with a trapezoidal driving block 26 that contacts the driving bracket 20, and both ends of the connecting frame 24 are provided with limiting guide cylinders 27 that cooperate with the driving bracket 20. The effect of the connecting frame 24 moving up and down with the rotation of the first screw 21 is achieved by the fixed connection between the fixing rod 25 and the fixed housing 6. When the connecting frame 24 moves, the driving brackets 20 at both ends are effectively moved relative to each other through the setting of the trapezoidal driving blocks 26, and due to the setting of the spring in the middle of the driving bracket 20, it is always in contact with the trapezoidal driving block 26, and the setting of the limiting guide cylinder 27 guides the driving bracket 20 while preventing the driving bracket 20 from falling off.

[0031] Detailed usage and function of the second embodiment: the first bracket 12 is fixed by the setting of the fixed rotating shaft 13, the connecting shaft 10 is rotated by the setting of the driving motor, thereby rotating the first bracket 12, and at the same time, the first brackets 12 on both sides are rotated relatively and synchronously under the influence of the cooperative gears 14 on both sides, thereby effectively making the forces applied when clamping objects on both sides the same, thereby achieving the effect of the driving device clamping materials and building pipes, etc., effectively improving the stability of the device, and the setting of the first crossbeam 15 enables the device to be connected to the balance bracket 11 when in use, thereby improving the stability of the device, and facilitating the fixing of the second bracket 17 by the setting of the second crossbeam 16, thereby effectively extending the use radius of the device, thereby improving the use efficiency of the device while avoiding safety reduction, and facilitating the installation of the second bracket 17 by the setting of the connecting hole 18, and the first transmission gear 8 is rotated by the setting of the transmission motor 7, thereby The setting of the second transmission gear 9 causes the first screw 21 to rotate, thereby causing the first screw 21 to move upward or downward along the threaded sleeve 22, thereby causing the driving device to move, and the driving brackets 20 on both sides to move relative to each other through the setting of the driving device, thereby achieving the effect of causing the second bracket 17 to move relative to each other, thereby achieving a clamping effect, and the second brackets 17 on both sides to move synchronously through the setting of the driving device, thereby improving the stability of the device, and the effect of the connecting frame 24 moving up and down with the rotation of the first screw 21. Due to the effect of the fixed connection between the fixing rod 25 and the fixed housing 6, when the connecting frame 24 moves, the driving brackets 20 at both ends are effectively moved relative to each other through the setting of the trapezoidal driving block 26, and due to the setting of the spring in the middle of the driving bracket 20, it is always in contact with the trapezoidal driving block 26, and the setting of the limiting guide cylinder 27 guides the driving bracket 20 while preventing the driving bracket 20 from falling off. Example 3

[0032] For example Figures 1 to 5 Shown:

[0033] The present invention provides a construction site crane hoisting device, wherein a connecting shaft 28 connected to the second bracket 17 is provided in the middle of the connecting bracket 23, and a rotating mechanism is provided in the middle of the lower end of the connecting bracket 23, a fixing device 3 is provided at the lower end of the rotating mechanism, and a balancing chamber 30 is provided at the upper end of the rotating mechanism, and a hydraulic drive pipe 31 is provided at the upper end of the balancing chamber 30, and a hydraulic pump 32 connected to the rotating plate 5 is provided at one end of the hydraulic drive pipe 31 away from the balancing chamber 30. The rotating mechanism is fixed by the setting of the connecting bracket 23, and the setting of the rotating mechanism makes the fixing device 3 easy to rotate so that the device can use the corresponding device while clamping objects of different shapes, thereby improving the stability of the device, and the hydraulic oil is pumped out by the setting of the hydraulic pump 32 so that the hydraulic oil enters the balancing chamber 30 through the setting of the hydraulic drive pipe 31, and then the hydraulic oil enters the interior of the rotating mechanism, thereby rotating it, thereby rotating the fixing device. The rotating mechanism includes a driving cylinder 33 connected to the connecting bracket 23, a second screw 34 is provided in the middle of the lower end of the driving cylinder 33, and a threaded inner cylinder 29 is provided at the lower end of the driving cylinder 33 to cooperate with the second screw 34, and a conduit 35 connected to the balancing chamber 30 is provided at the upper end of the driving cylinder 33, and a piston plate is provided in the middle of the driving cylinder 33, hydraulic oil enters the interior of the driving cylinder 33 through the conduit 35, and the piston plate is pushed by the effect of the hydraulic oil, thereby pushing the second screw 34 through the piston plate to rotate the second screw 34, thereby rotating the fixing device 3 at its lower end. The fixing device 3 includes a rotating frame 36 connected to the second screw 34, and a positioning hole 37 is provided on one side of the rotating frame 36, and a fixing shaft 38 is provided in the middle of the positioning hole 37, and a mounting groove 39 is provided on the side of the rotating frame 36 away from the positioning hole 37, and a drop bracket 40 is provided in the middle of the mounting groove 39, and the positioning holes 37 of the fixing devices 3 on both sides are staggered. Through the arrangement of the positioning holes 37 and the coordination of the fixing shaft 38, when clamping cylindrical materials such as pipes, the fixing shaft 38 is squeezed into the interior of the positioning hole 37 so that the two correspond to each other, thereby achieving the effect of clamping the pipe. Through the arrangement of the mounting groove 39 and the drop bracket 40, the device fixes the plate through the arrangement of the drop bracket 40 when clamping the plate, thereby effectively improving the stability of the device and the safety of the device during clamping.

[0034] Detailed usage and function of the third embodiment: The rotating mechanism is fixed by the connection bracket 23. The rotating mechanism makes the fixing device 3 easy to rotate, so that the device can use the corresponding device while clamping objects of different shapes, thereby improving the stability of the device. The hydraulic oil is pumped out by the hydraulic pump 32, so that the hydraulic oil enters the balance chamber 30 through the hydraulic drive pipe 31, and then the hydraulic oil enters the interior of the rotating mechanism, thereby rotating it, thereby rotating the fixing device. The hydraulic oil enters the interior of the driving cylinder 33 through the conduit 35. The piston plate is pushed by the effect of the hydraulic oil, thereby pushing the second screw 34 through the piston plate, so that the second screw 34 rotates, thereby rotating the fixing device 3 at its lower end. When clamping cylindrical materials such as pipes, the fixing shaft 38 is squeezed into the interior of the positioning hole 37 so that the two correspond to each other, thereby achieving the effect of clamping the pipe. The installation groove 39 and the drop bracket 40 enable the device to fix the plate when clamping the plate through the drop bracket 40, thereby effectively improving the stability of the device and the safety of the device during clamping.

[0035] To sum up, with the help of the above-mentioned technical solution of the patent of this invention, the stability and safety of the lifting of complex shapes such as pipes, plates, building materials, etc. are effectively guaranteed, and the stability and applicability of the device during use are effectively improved.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A crane hoisting device for a construction site, characterized in that: The invention comprises a mounting base (1), a transmission device, a clamping bracket (2), and a fixing device (3), wherein a fixing flange (4) is provided at the upper end of the mounting base (1), a rotating plate (5) is provided at the lower end of the rotating plate (5), a fixed housing (6) is provided at the lower end of the rotating plate (5), a transmission device is provided in the middle of the interior of the fixed housing (6), the transmission device comprises a transmission motor (7) located on one side of the interior of the fixed housing (6), a first transmission gear (8) is provided at the upper end of the transmission motor (7), and a second transmission gear (9) is provided at the lower end of the first transmission gear (8), a connecting shaft (10) passing through the fixed housing (6) is provided on the side of the interior of the fixed housing (6) away from the transmission motor (7), one end of the connecting shaft (10) is connected to the clamping bracket (2), and a fixing device (3) is provided at the lower end of the clamping bracket (2), and a balancing bracket (11) connected to the clamping bracket (2) is provided on both sides of the mounting base (1); The clamping bracket (2) includes a first bracket (12) located on both sides of the fixed housing (6), one end of the first bracket (12) is provided with a fixed rotating shaft (13) connected to the fixed housing (6), and the opposite ends of the first brackets (12) on both sides are provided with matching cooperative gears (14), and one of the first brackets (12) is connected to the connecting shaft (10), and one end of the connecting shaft (10) is provided with a driving motor connected to the fixed housing (6), and a first crossbeam (15) connected to the balancing bracket (11) is provided in the middle of the upper end of the first bracket (12), and a second crossbeam (16) is provided in the middle of the lower end of the first bracket (12), and a second bracket (17) is provided in the middle of the second crossbeam (16); A connecting bracket (23) is provided at the lower end of the second bracket (17), a connecting shaft (28) connected to the second bracket (17) is provided in the middle of the connecting bracket (23), and a rotating mechanism is provided in the middle of the lower end of the connecting bracket (23), and a fixing device (3) is provided at the lower end of the rotating mechanism; The rotating mechanism comprises a driving cylinder (33) connected to the connecting bracket (23), and a second screw (34) is provided at the middle portion of the lower end of the driving cylinder (33); The fixing device (3) includes a rotating frame (36) connected to the second screw (34), and a positioning hole (37) is provided on one side of the rotating frame (36), and a fixing shaft (38) is provided in the middle of the positioning hole (37), and a mounting groove (39) is provided on the side of the rotating frame (36) away from the positioning hole (37), and a drop bracket (40) is provided in the middle of the mounting groove (39), and the positioning holes (37) of the fixing devices (3) on both sides are staggered.

2. A construction site crane hoisting device according to claim 1, characterized in that: A connecting hole (18) matching with the second crossbeam (16) is provided in the middle of the second bracket (17), and a driving crossbar (19) is provided at one end of the second bracket (17), and a driving bracket (20) is provided at one end of the driving crossbar (19), and a driving device is provided at one end of the driving bracket (20) away from the driving crossbar (19), and a first screw (21) is provided at the upper end of the driving device, and a threaded sleeve (22) connected to the fixed housing (6) is provided at the middle of the upper end of the first screw (21), and the upper end of the first screw (21) passes through the fixed housing (6) and is connected to the second transmission gear (9).

3. A construction site crane hoisting device according to claim 2, characterized in that: The driving device includes a connecting frame (24) movably connected to the first screw (21), a fixing rod (25) penetrating the first screw (21) and connected to the fixed housing (6) is provided in the middle of the interior of the connecting frame (24), and a trapezoidal driving block (26) in contact with the driving bracket (20) is provided at the lower end of the fixing rod (25), and limiting guide cylinders (27) cooperating with the driving bracket (20) are provided at both ends of the connecting frame (24).

4. A construction site crane hoisting device according to claim 1, characterized in that: A balancing chamber (30) is provided at the upper end of the rotating mechanism, a hydraulic drive pipe (31) is provided at the upper end of the balancing chamber (30), and a hydraulic pump (32) connected to the rotating plate (5) is provided at one end of the hydraulic drive pipe (31) away from the balancing chamber (30).

5. A construction site crane hoisting device according to claim 4, characterized in that: The lower end of the drive cylinder (33) is provided with a threaded inner cylinder (29) that matches the second screw (34), the upper end of the drive cylinder (33) is provided with a guide tube (35) connected to the balance chamber (30), and the middle part of the drive cylinder (33) is provided with a piston plate.

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