A small lifting and hoisting equipment for urban and rural construction

Abstract

This invention discloses a small lifting and hoisting device for urban and rural construction, belonging to the technical field of hoisting equipment. The device includes a gantry frame, and further includes: two movable bases, each located on one side of the gantry frame for moving the gantry; a movable frame slidably connected to the crossbeam of the gantry frame, with a first winch mounted on it, connected to a hook via a first wire rope; a second winch, mounted on one side of the gantry frame via a support, and used to drive the movable frame along the crossbeam of the gantry frame via a second wire rope; and an auxiliary support mechanism located on both sides of the gantry frame. This invention, through the lifting and lowering action of the hook, mechanically controls the unfolding width and support timing of the load-bearing bar, solving the swaying problem and achieving a compact design, thus adapting to the space and economic needs of urban and rural construction.

Description

Technical Field

[0001] This invention relates to the field of hoisting equipment technology, and in particular to a small hoisting equipment for urban and rural construction. Background Technology

[0002] With the rapid advancement of urban and rural construction in my country, the demand for prefabricated buildings, municipal engineering, and small-scale infrastructure construction has surged, placing higher demands on lightweight and highly mobile hoisting equipment. Traditional large cranes have the following limitations: (1) they are difficult to operate in confined spaces such as narrow alleys and old residential area renovations; (2) the equipment transportation and assembly costs are high, which does not meet the economic requirements of rural areas; (3) they are highly dependent on electricity, and energy supply is limited during field construction; therefore, small hoisting equipment is generally used.

[0003] However, existing hoisting equipment generally uses electric hoists in conjunction with wire ropes to lift heavy objects. However, due to the flexible connection between the wire rope and the heavy object, the heavy object sways when the electric hoist moves along the main beam. On the one hand, this may cause the heavy object to fall and create a safety hazard. On the other hand, the shaking of the heavy object causes the electric hoist to sway, affecting its service life and the stability of movement. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art and to propose a small lifting and hoisting device for urban and rural construction.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A small lifting and hoisting device for urban and rural construction includes a gantry frame and further includes:

[0007] Two movable bases are provided and are respectively located on both sides of the gantry frame for moving the gantry frame;

[0008] A movable frame is slidably connected to the crossbeam of the gantry frame. A first winch is installed on the movable frame, and the first winch is connected to a hook part by a first wire rope.

[0009] The second winch is mounted on one side of the gantry frame via a support, and the second winch is used to drive the moving frame to move along the crossbeam of the gantry frame via a second wire rope.

[0010] And an auxiliary support mechanism, which is set on both sides of the gantry frame to assist in supporting the weight hooked by the hook part. The auxiliary support mechanism includes a load-bearing bar, a first swing assembly for driving the load-bearing bar to move, and a second swing assembly for driving the first swing assembly to move.

[0011] Preferably, the movable frame includes a slide block slidably disposed with the gantry beam, an elastic telescopic rod fixed on the slide block, and a mounting plate disposed on the top of the elastic telescopic rod, wherein the first winch is fixed on the mounting plate.

[0012] Preferably, the second swing assembly includes a lifting plate slidably connected to the gantry frame, an L-shaped rod fixed to both sides of each end of the lifting plate, a first connecting rod connected to the end of the L-shaped rod away from the lifting plate, and a second connecting rod rotatably connected between the first connecting rod and the gantry frame via a pin. The first swing assembly is disposed on the second connecting rod, and the gantry frame is provided with a lifting groove for the sliding of the lifting plate.

[0013] Preferably, the first swing assembly includes a swing shell rotatably connected to the second connecting rod via a rotating shaft, a U-shaped plate vertically slidably connected to the gantry, support plates fixed on both sides of each end of the U-shaped plate, and a top rod fixed to the support plates and moving against the swing shell. The rotating shaft is provided with a torsion spring for driving the swing shell to reset and rotate. The U-shaped plate is slidably connected to the mounting plate.

[0014] Preferably, the load-bearing rod is slidably connected between the swing shells on both sides of the gantry frame, and the load-bearing rod is provided with a plurality of ball bearings along its axial direction. The second connecting rod is provided with a baffle that moves against the swing shell.

[0015] Preferably, a wedge-shaped block is slidably connected inside the swing shell to move against the load-bearing rod, a top plate is fixed on the top of the wedge-shaped block, and an elastic element is provided between the top plate and the swing shell.

[0016] Preferably, a movable plate is slidably connected to the bottom of the lifting plate, and a traction rope is provided between the movable plate and the top plate, with the movable plate moving against the hook portion.

[0017] Preferably, the end of the traction rope away from the lifting plate is arranged sequentially along the length of the L-shaped rod, the first connecting rod, and the swing shell. The L-shaped rod and the first connecting rod are provided with positioning rings for positioning the traction rope, and the top of the swing shell is provided with a guide tube for the traction rope to pass through.

[0018] Preferably, the movable plate includes a plate body and a slide rod fixed on the plate body, a limiting plate is fixed on the slide rod, and a concave hole for sliding of the slide rod is provided on the lifting plate.

[0019] Preferably, the second winch has two sets of second wire ropes, with the ends of the two sets of second wire ropes away from the second winch respectively fixed to the two ends of the moving frame. By winding and unwinding the two sets of second wire ropes, the moving frame is driven to move left or right along the gantry beam.

[0020] Compared with the prior art, the present invention provides a small lifting and hoisting device for urban and rural construction, which has the following beneficial effects:

[0021] 1. This small lifting and hoisting equipment for urban and rural construction works in conjunction with the first and second swing components to make the swing shell drive the load-bearing rod to fit vertically against the side wall of the gantry frame, reducing the size of the hoisting equipment, making it easier to pass through narrow alleys, and making it easier to carry out hoisting operations in old residential areas. The movable base enables rapid relocation without the need for disassembly and reassembly.

[0022] 2. This small lifting and hoisting equipment for urban and rural construction, by setting an elastic telescopic rod between the mounting plate and the slide, can buffer the impact of the hook part on the lifting of heavy objects, protect the safety of the first winch, and the load-bearing rod forms a rigid support platform to assist in the support of the heavy objects when lifting them, eliminating the swaying of the heavy objects in the air, thus forming a double anti-sway protection, improving the stability of the lifting and moving of heavy objects and the service life of the hoisting equipment.

[0023] 3. This small lifting and hoisting equipment for urban and rural construction uses the lifting action of the hook to link the unfolding and retracting action of the load bar, with zero power dependence. The traction rope and wedge block realize the self-locking release of the load bar, and the operation fault tolerance rate is high. Attached Figure Description

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 for Figure 1 Enlarged structural diagram of section A in the middle;

[0026] Figure 3 for Figure 1 Enlarged structural diagram of section B in the middle;

[0027] Figure 4 This is a schematic diagram of the hook portion of the present invention when it is lowered without any load attached.

[0028] Figure 5 This is a schematic diagram of the structure of the hook portion of the present invention when it is rolled up to the top;

[0029] Figure 6 for Figure 5 Another perspective structural diagram;

[0030] Figure 7 This is a schematic diagram of the structure in which the load-bearing rod is limited when the hook part of the present invention is loaded with a heavy object;

[0031] Figure 8 This is a schematic diagram of the structure of the hook part of the present invention after the load-bearing bar is released when a heavy object is hung on it.

[0032] Figure 9 This is a schematic diagram of the structure of the mobile frame of the present invention;

[0033] Figure 10This is a schematic diagram of the structure of the end of the U-shaped plate of the present invention;

[0034] Figure 11 This is a schematic diagram of the external structure of the swing shell of the present invention.

[0035] In the diagram: 1. Gantry frame; 2. Movable base; 3. Movable frame; 301. Slide seat; 302. Elastic telescopic rod; 303. Mounting plate; 4. First winch; 5. Hook part; 6. Second winch; 7. Load-bearing rod; 701. Ball bearing; 8. Lifting plate; 801. L-shaped rod; 802. First connecting rod; 803. Second connecting rod; 8031. Baffle; 804. Lifting groove; 805. Concave hole; 9. Swing shell; 901. U-shaped plate; 902. Support plate; 903. Top rod; 10. Wedge block; 1001. Top plate; 1002. Elastic element; 11. Movable plate; 111. Plate body; 112. Slide rod; 113. Limiting plate; 12. Positioning ring; 13. Guide tube; 14. Traction rope. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, 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 invention.

[0038] like Figure 1 and Figure 4 As shown, this embodiment proposes a small lifting and hoisting equipment for urban and rural construction, including a gantry frame 1, and further including: a movable base 2, a movable frame 3, a second winch 6, and an auxiliary support mechanism. The gantry frame 1 serves as the main support structure, and the movable bases 2 installed on both sides enable overall displacement. The movable frame 3 is connected to the crossbeam of the gantry frame 1 via a slide rail and carries a first winch 4 and a hook part 5. The second winch 6 is mounted on one side of the gantry frame 1 via a support, and the second winch 6 is used to drive the movable frame 3 to move along the crossbeam of the gantry frame 1 via a second steel wire rope. The auxiliary support mechanism is located on both sides of the gantry frame 1 and is used to assist in supporting the weight hooked by the hook part 5. The auxiliary support mechanism includes a load-bearing rod 7, a first swing assembly for driving the movement of the load-bearing rod 7, and a second swing assembly for driving the movement of the first swing assembly.

[0039] The entire equipment is moved to the working position by pushing the mobile base 2. The second winch 6 is operated to raise and lower the second steel wire rope, and the mobile frame 3 is driven to be precisely positioned laterally. The first winch 4 lowers the hook part 5 to hook the heavy object and then lifts it. Through the lifting and lowering action of the hook part 5, the first swing component and the second swing component work together. The mechanical linkage controls the unfolding width and support timing of the load bar 7, which not only solves the swaying problem, but also makes the equipment compact and adapts to the space and economic needs of urban and rural construction.

[0040] like Figure 1 , Figure 4 and Figure 9 As shown, in a preferred embodiment, based on the above method, the movable frame 3 further includes a slide block 301 slidably disposed with the crossbeam of the gantry frame 1, an elastic telescopic rod 302 fixed on the slide block 301, and a mounting plate 303 disposed on the top of the elastic telescopic rod 302. The first winch 4 is fixed on the mounting plate 303. The slide block 301 is slidably connected to the crossbeam of the gantry frame 1 via a guide rail to achieve lateral movement. The elastic telescopic rod 302 adopts a spring or hydraulic buffer structure and is vertically fixed to the top of the slide block 301. The mounting plate 303 is rigidly connected to the top of the elastic telescopic rod 302. The first winch 4 is fixed to the plane of the mounting plate 303 by bolts. The slide block 301 slides along the crossbeam of the gantry frame 1, driving the first winch 4 to be precisely positioned to the lifting point. When lifting heavy objects, the elastic telescopic rod 302 compresses and absorbs the impact force to prevent the wire rope from breaking due to overload. The mounting plate 303 provides rigid support for the first winch 4 to ensure that there is no deviation during the lifting process.

[0041] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in a preferred embodiment, based on the above method, the second swing assembly further includes a lifting plate 8 slidably connected to the gantry frame 1, an L-shaped rod 801 fixedly connected to both sides of each end of the lifting plate 8, a first connecting rod 802 connected to the end of the L-shaped rod 801 away from the lifting plate 8, and a second connecting rod 803 rotatably connected between the first connecting rod 802 and the gantry frame 1 via a pin. The first swing assembly is disposed on the second connecting rod 803, and the lifting plate 8 forms a vertical sliding connection with the gantry frame 1 through the lifting groove 804, realizing vertical movement. Displacement; external power, i.e., hook 5, can lift the lifting plate 8. When hook 5 moves down, the lifting plate 8 moves down under its own weight, causing the lifting plate 8 to slide up and down along the lifting groove 804. L-shaped rod 801 converts the linear motion of the lifting plate 8 into the tilting motion of the first connecting rod 802. The second connecting rod 803 rotates around the pin, driving the first swing assembly to unfold or retract the load bar 7. By working together with the first swing assembly and the second swing assembly, the volume of the hoisting equipment is reduced, making it easier to pass through narrow alleys and to carry out hoisting operations in old residential areas.

[0042] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 10 and Figure 11 As shown, in a preferred embodiment, based on the above method, the first swing assembly further includes a swing shell 9 rotatably connected to the second connecting rod 803 via a rotating shaft, a U-shaped plate 901 vertically slidably connected to the gantry frame 1, a support plate 902 fixed on both sides of each end of the U-shaped plate 901, and a top rod 903 fixed to the support plate 902 and movably abutting against the swing shell 9. The preload of the torsion spring on the rotating shaft ensures the reset function, and the U-shaped plate 901 is slidably connected to the mounting plate 303.

[0043] When the second swing assembly drives the first swing assembly away from the gantry frame 1, the swing shell 9 moves away from the gantry frame 1 and returns to its tilted position under the action of the torsion spring. At this time, the swing shell 9 is higher at the near end and lower at the far end from the gantry frame 1. When the mounting plate 303 moves down, it drives the U-shaped plate 901 to descend synchronously. The top rod 903 pushes the swing shell 9 to rotate. At this time, the end near the gantry frame 1 is lowered and the far end is raised, so that the load-bearing rod 7 inside the swing shell 9 can slide down from the high end to the low end, thereby reducing the distance between the two sides of the gantry frame 1 and forming a support platform for the heavy object.

[0044] It should be noted that, in order to reduce the wear and movement resistance of the heavy object on the load bar 7, the load bar 7 is slidably connected between the swing shells 9 on both sides of the gantry frame 1. The load bar 7 is provided with a number of ball bearings 701 along its axial direction. The second connecting rod 803 is provided with a baffle 8031 ​​that moves against the swing shell 9. The baffle 8031 ​​can effectively limit and support the tilting swing shell 9, thereby ensuring the stability of the load bar 7 in supporting the heavy object.

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 10 and Figure 11 As shown, in a preferred embodiment, based on the above method, a wedge block 10 is slidably connected inside the swing shell 9 to move against the load bar 7, a top plate 1001 is fixed on the top of the wedge block 10, and an elastic element 1002 is provided between the top plate 1001 and the swing shell 9.

[0046] Furthermore, a movable plate 11 is slidably connected to the bottom of the lifting plate 8, and a traction rope 14 is provided between the movable plate 11 and the top plate 1001. The movable plate 11 and the hook part 5 move against each other.

[0047] When the first swing assembly operates, the support plate 902 at the end of the U-shaped plate 901 presses down on the swing shell 9 via the top rod 903, causing the swing shell 9 to deflect relative to the second connecting rod 803. This results in the end of the swing shell 9 near the side wall of the gantry frame 1 being on the lower side and the end of the swing shell 9 away from the side wall of the gantry frame 1 being on the upper side. However, at this time, the load bar 7 between the swing shells 9 on both sides of the gantry frame 1 is blocked by the wedge block 10 and cannot slide down along the inclined swing shell 9. The hook part 5 drives the weight past the two load bars 7 and continues to move upward until the hook part 5 lifts the movable plate 11. The movable plate 11 moves upward relative to the lifting plate 8. The movable plate 11 pulls the top plate 1001 via the traction rope 14, causing the top plate 1001 to drive the wedge block 10 to move relative to the swing shell 9. The load bar 7 is no longer restricted, and the unrestricted load bar 7 moves down along the inclined swing shell 9. At this time, the distance between the load bars 7 on both sides of the gantry frame 1 is shortened. Then, the first winch 4 lowers the hook part 5, so that the weight hooked by the hook part 5 slowly falls onto the two load bars 7, providing auxiliary support for the hooked weight. When the end of the swing shell 9 near the gantry frame 1 is back on the upper side, the load bar 7 will slide down from the high end to the low end of the swing shell 9. During this process, the load bar 7 applies a pushing force to the inclined surface of the wedge block 10, so that the wedge block 10 avoids the load bar 7. After the load bar 7 passes the wedge block 10, the wedge block 10 is reset under the elastic force of the elastic element 1002. At this time, the wedge block 10 cooperates with the swing shell 9 to restrict and position the load bar 7.

[0048] It should be noted that, in order to ensure that the traction rope 14 effectively pulls the movable plate 11, the end of the traction rope 14 away from the lifting plate 8 is arranged sequentially along the length of the L-shaped rod 801, the first connecting rod 802 and the swing shell 9. The L-shaped rod 801 and the first connecting rod 802 are provided with positioning rings 12 for positioning the traction rope 14. The top of the swing shell 9 is provided with a guide tube 13 for the traction rope 14 to pass through. The positioning rings 12 and the guide tube 13 guide the traction rope 14.

[0049] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, the movable plate 11 further includes a plate body 111 and a slide rod 112 fixed on the plate body 111. A limiting plate 113 is fixed on the slide rod 112. The lifting plate 8 has a recessed hole 805 for sliding the slide rod 112. When the hook part 5 is pulled up by the first wire rope, it will first apply a pushing force to the movable plate 11. The movable plate 11 slides in the recessed hole 805 through the slide rod 112. At this time, the lifting plate 8 will not move temporarily under its own weight. As the movable plate 11 rises and comes into contact with the lifting plate 8, the force on the movable plate 11 is transmitted to the lifting plate 8, and the lifting plate 8 rises synchronously with the movable plate 11.

[0050] like Figure 1 and Figure 4 As shown, in a preferred embodiment, based on the above method, the second winch 6 is further provided with two sets of second wire ropes. The ends of the two sets of second wire ropes away from the second winch 6 are respectively fixed to the two ends of the moving frame 3, forming a symmetrical traction structure. By winding and unwinding the two sets of second wire ropes, the moving frame 3 is driven to move left or right along the crossbeam of the gantry frame 1. The second winch 6 tightens the left wire rope while simultaneously loosening the right wire rope, pulling the moving frame 3 to slide to the right. By winding and unwinding the wire rope sets in the opposite direction, the moving frame 3 is driven to move to the left. The winding and unwinding length of the wire ropes can be monitored in real time by the winch encoder. It should be noted that the first winch 4 and the second winch 6 are existing structures, and will not be described in detail here.

[0051] Working principle: When the hoisting equipment is not in use, the hook part 5 of the first winch 4 is wound up to the upper side and the lifting plate 8 is lifted by the movable plate 11. The L-shaped rod 801 connected to the end of the lifting plate 8 pulls the second connecting rod 803 upward through the first connecting rod 802, so that the second connecting rod 803 moves closer to the side wall of the gantry frame 1. When the swing shell 9 of the first swing assembly moves closer to the side wall of the gantry frame 1, it will abut against the side wall of the gantry frame 1 and then flip over, so that the swing shell 9 is gradually placed vertically, shortening the unfolding space of the swing shell 9, thereby reducing the space occupied by the hoisting equipment when it is not in use.

[0052] When a heavy object needs to be hoisted, the hoisting equipment is moved to the location of the object via the movable base 2. The hook part 5 is positioned directly above the object, and the first winch 4 lowers the hook part 5 via the first wire rope. The hook part 5 no longer lifts the lifting plate 8, and the lifting plate 8 and the movable plate 11 automatically move downwards under their own weight. The L-shaped rod 801 at the end of the lifting plate 8 presses down on one end of the second connecting rod 803 via the first connecting rod 802, so that the second connecting rod 803 is aligned with the gantry frame 1. The hinge point is a circular deflection. When the second link 803 deflects, it drives the swing shell 9 away from the side wall of the gantry frame 1. The swing shell 9 no longer abuts against the side wall of the gantry frame 1 and returns to its original position under the action of the torsion spring. At this time, the end of the swing shell 9 close to the gantry frame 1 is on the upper side and the side away from the gantry frame 1 is on the lower side. The load bar 7 is on the lower side of the swing shell 9. At this time, the distance between the load bars 7 on both sides of the gantry frame 1 is relatively wide, which can meet the distance of the heavy object being lifted by the hook part 5 and passing over the two load bars 7.

[0053] As the hook part 5 hooks the heavy object, the first winch 4 pulls the hook part 5 upward through the first wire rope. The first winch 4, subjected to the reaction force of the heavy object, causes the mounting plate 303 to press down on the elastic telescopic rod 302. The mounting plate 303 then moves the U-shaped plate 901 downward synchronously. The support plate 902 at the end of the U-shaped plate 901 presses down on the swing shell 9 through the top rod 903, causing the swing shell 9 to deflect relative to the second connecting rod 803. This results in the end of the swing shell 9 near the side wall of the gantry frame 1 being on the lower side and the end of the swing shell 9 away from the side wall of the gantry frame 1 being on the upper side. However, at this time, the load-bearing rod 7 between the swing shells 9 on both sides of the gantry frame 1 is blocked by the wedge block 10 and cannot move smoothly. As the tilted swing shell 9 slides down, the hook part 5 carries the heavy object over the two load bars 7 and continues to move upward until the hook part 5 lifts the movable plate 11. The movable plate 11 moves upward relative to the lifting plate 8. The movable plate 11 pulls the top plate 1001 through the traction rope 14, causing the top plate 1001 to move the wedge block 10 relative to the swing shell 9. The wedge block 10 no longer restricts the load bar 7. The unrestricted load bar 7 moves downward along the tilted swing shell 9. At this time, the distance between the load bars 7 on both sides of the gantry frame 1 is shortened. Then the first winch 4 lowers the hook part 5, so that the heavy object hooked by the hook part 5 slowly falls onto the two load bars 7, providing auxiliary support for the hooked heavy object.

[0054] Subsequently, the second winch 6, in conjunction with the second wire rope, applies tension to the moving frame 3, causing the moving frame 3 to move along the crossbeam of the gantry frame 1, thereby enabling the moving frame 3 to smoothly lift and transfer the heavy object through the hook part 5 connected to the first winch 4.

[0055] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0056] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A small lifting and hoisting equipment for urban and rural construction, comprising a gantry (1), characterized in that, Also includes: Two movable bases (2) are provided and are respectively located on both sides of the gantry (1) for moving the gantry (1). The mobile frame (3) is slidably connected to the crossbeam of the gantry frame (1). The mobile frame (3) is equipped with a first winch (4), and the first winch (4) is connected to a hook part (5) by a first wire rope. The second winch (6) is mounted on one side of the gantry frame (1) via a support, and the second winch (6) is used to drive the moving frame (3) to move along the crossbeam of the gantry frame (1) via a second wire rope; And an auxiliary support mechanism, which is set on both sides of the gantry (1) to assist in supporting the weights hooked by the hook part (5). The auxiliary support mechanism includes a load bar (7), a first swing assembly for driving the load bar (7) to move, and a second swing assembly for driving the first swing assembly to move. The movable frame (3) includes a slide block (301) that is slidably disposed with the crossbeam of the gantry frame (1), an elastic telescopic rod (302) fixed on the slide block (301), and a mounting plate (303) disposed on the top of the elastic telescopic rod (302). The first winch (4) is fixed on the mounting plate (303). The second swing assembly includes a lifting plate (8) slidably connected to the gantry (1), an L-shaped rod (801) fixed to both sides of each end of the lifting plate (8), a first connecting rod (802) connected to the end of the L-shaped rod (801) away from the lifting plate (8), and a second connecting rod (803) rotatably connected between the first connecting rod (802) and the gantry (1) by a pin. The first swing assembly is disposed on the second connecting rod (803), and the gantry (1) is provided with a lifting groove (804) for the sliding of the lifting plate (8). The first swing assembly includes a swing shell (9) rotatably connected to the second connecting rod (803) via a rotating shaft, a U-shaped plate (901) vertically slidably connected to the gantry frame (1), a support plate (902) fixed on both sides of each end of the U-shaped plate (901), and a top rod (903) fixedly connected to the support plate (902) and movingly abutting against the swing shell (9). A torsion spring for driving the swing shell (9) to reset and rotate is provided on the rotating shaft. The U-shaped plate (901) is slidably connected to the mounting plate (303). The load-bearing rod (7) is slidably connected between the swing shells (9) on both sides of the gantry frame (1). The load-bearing rod (7) is provided with a number of ball bearings (701) along its axial direction. The second connecting rod (803) is provided with a baffle (8031) that moves against the swing shell (9). The swing shell (9) is slidably connected to a wedge block (10) that moves against the load bar (7). A top plate (1001) is fixed on the top of the wedge block (10). An elastic element (1002) is provided between the top plate (1001) and the swing shell (9). The bottom of the lifting plate (8) is slidably connected to a movable plate (11), and a traction rope (14) is provided between the movable plate (11) and the top plate (1001). The movable plate (11) and the hook part (5) move against each other.

2. The small lifting and hoisting equipment for urban and rural construction according to claim 1, characterized in that, The end of the traction rope (14) away from the lifting plate (8) is arranged sequentially along the length of the L-shaped rod (801), the first connecting rod (802) and the swing shell (9). The L-shaped rod (801) and the first connecting rod (802) are provided with positioning rings (12) for positioning the traction rope (14). The top of the swing shell (9) is provided with a guide tube (13) for the traction rope (14) to pass through.

3. The small lifting and hoisting equipment for urban and rural construction according to claim 2, characterized in that, The movable plate (11) includes a plate body (111) and a slide rod (112) fixed on the plate body (111). A limiting plate (113) is fixed on the slide rod (112), and a recessed hole (805) for sliding the slide rod (112) is provided on the lifting plate (8).

4. The small lifting and hoisting equipment for urban and rural construction according to claim 1, characterized in that, The second winch (6) has two sets of second wire ropes. The ends of the two sets of second wire ropes away from the second winch (6) are respectively fixed to the two ends of the moving frame (3). By winding and unwinding the two sets of second wire ropes, the moving frame (3) is driven to move left or right along the crossbeam of the gantry frame (1).

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