Small hoisting equipment for urban and rural construction

Abstract

The invention discloses small hoisting equipment for urban and rural construction, and belongs to the technical field of hoisting equipment. The small hoisting equipment for urban and rural construction comprises a portal frame, and further comprises two movable bases which are arranged on the two sides of the portal frame correspondingly and used for moving the portal frame; the movable frame is slidably connected to a cross beam of the portal frame, a first winch is arranged on the movable frame, and the first winch is connected with a hook part through a first steel wire rope; the second winch is arranged on one side of the portal frame through a support, and the second winch is used for driving the movable frame to move along the cross beam of the portal frame through a second steel wire rope; the auxiliary supporting mechanisms are arranged on the two sides of the portal frame; the unfolding width and the supporting time of the loading rod are controlled through the lifting action of the hook part and mechanical linkage, the shaking problem is solved, equipment compactness is achieved, and the space and economical requirements of urban and rural construction are met.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting equipment, in particular to a small-sized lifting and hoisting equipment for urban and rural construction. Background Art

[0002] With the rapid advancement of urban and rural construction in my country, the demand for prefabricated buildings, municipal engineering projects, and small-scale infrastructure construction has surged, placing higher demands on lightweight and highly maneuverable lifting equipment. Traditional large cranes have the following limitations: (1) They are difficult to operate in confined spaces such as narrow alleys and renovations of old residential areas; (2) The transportation and assembly costs of equipment 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; small lifting equipment is generally used.

[0003] However, existing lifting 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 shakes when the electric hoist moves along the main beam. On the one hand, this may cause the heavy object to fall, creating a safety hazard. On the other hand, the shaking of the heavy object may cause the electric hoist to shake, affecting its service life and movement stability. Summary of the Invention

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

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A small-sized lifting and hoisting equipment for urban and rural construction, comprising a gantry and: Two movable bases are provided and are respectively arranged on both sides of the gantry, for moving the gantry; A movable frame, wherein the movable frame is slidably connected to the crossbeam of the gantry frame, and a first winch is provided on the movable frame, wherein the first winch is connected to a hook portion via a first steel wire rope; a second winch, the second winch being arranged on one side of the gantry through a support, and the second winch being used to drive the movable frame to move along the crossbeam of the gantry through a second steel wire rope; And an auxiliary support mechanism, which is arranged on both sides of the gantry and is used to auxiliary support the heavy objects hooked by the hook part. The auxiliary support mechanism includes a load-bearing rod, a first swinging component for driving the load-bearing rod to move, and a second swinging component for driving the first swinging component to move.

[0006] Preferably, the movable frame includes a slide seat slidably arranged with the gantry beam, an elastic telescopic rod fixed on the slide seat, and a mounting plate arranged on the top of the elastic telescopic rod, and the first winch is fixed on the mounting plate.

[0007] Preferably, the second swing assembly includes a lifting plate slidably connected to the gantry, an L-shaped rod fixedly connected 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 via a pin shaft. The first swing assembly is arranged on the second connecting rod, and the gantry is provided with a lifting groove for the lifting plate to slide.

[0008] Preferably, the first swinging assembly includes a swinging shell connected to the second connecting rod through a rotating shaft, a U-shaped plate connected to the gantry for vertical sliding, support plates fixed on both sides of each end of the U-shaped plate, and a top rod fixed to the support plates and movably opposed to the swinging shell, a torsion spring for driving the swinging shell to reset and rotate is provided on the rotating shaft, and the U-shaped plate is slidably connected to the mounting plate.

[0009] Preferably, the load-bearing rod is slidably connected between the swing shells on both sides of the gantry, the load-bearing rod is provided with a plurality of balls along its axial direction, and the second connecting rod is provided with a baffle that resists the movement of the swing shell.

[0010] Preferably, a wedge block that is slidably connected to the swing shell and movably abuts against the load-bearing rod is provided, a top plate is fixed on the top of the wedge block, and an elastic element is provided between the top plate and the swing shell.

[0011] Preferably, the bottom of the lifting plate is slidably connected to a movable plate, a traction rope is provided between the movable plate and the top plate, and the movable plate and the hook portion are movably opposed to each other.

[0012] Preferably, the end of the traction rope away from the lifting plate is arranged in sequence along the L-shaped rod, the first connecting rod and the length direction of 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.

[0013] Preferably, the movable plate includes a plate body and a sliding rod fixed on the plate body, a limiting plate is fixed on the sliding rod, and a concave hole for sliding of the sliding rod is opened on the lifting plate.

[0014] Preferably, the second winch is provided with two groups of second steel wire ropes, and the ends of the two groups of second steel wire ropes away from the second winch are respectively fixed to the two ends of the movable frame, and the movable frame is driven to move left or right along the gantry beam by retracting and extending the two groups of second steel wire ropes.

[0015] Compared with the prior art, the present invention provides a small-scale lifting and hoisting equipment for urban and rural construction, which has the following beneficial effects: 1. This small-scale lifting and hoisting equipment for urban and rural construction works together through the first swing assembly and the second swing assembly, so that the swing shell drives the load-bearing rod to fit the side wall of the gantry and be stored vertically, reducing the size of the lifting equipment, making it easier to pass through narrow alleys and carry out lifting operations in old communities. The mobile base can achieve rapid transfer without the need for disassembly and reorganization.

[0016] 2. This small-scale lifting and hoisting equipment for urban and rural construction can cushion the impact of the hook when lifting heavy objects by arranging an elastic telescopic rod between the mounting plate and the slide, thereby protecting the safe use of the first winch. The load-bearing rod forms a rigid support platform to assist in supporting the heavy objects when lifting heavy objects, eliminating the hanging and swinging of the heavy objects, thereby forming a double anti-sway protection, improving the stability of the heavy objects during lifting and transfer and the service life of the lifting equipment.

[0017] 3. This small-scale lifting equipment for urban and rural construction links the expansion and contraction of the load-bearing rod through the lifting and lowering action of the hook part. It has zero electricity dependence. The traction rope and wedge block realize the self-locking release of the load-bearing rod, and the operation fault tolerance rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the middle part A; Figure 3 for Figure 1 A schematic diagram of the enlarged structure of the middle B part; Figure 4 This is a schematic structural diagram of the hook portion of the present invention when it is lowered without any heavy objects being hung on it; Figure 5 This is a schematic structural diagram of the hook portion of the present invention when it is rolled up to the top; Figure 6 for Figure 5 Another perspective structural diagram; Figure 7 It is a structural schematic diagram of the load-bearing rod being limited when the hook portion of the present invention is hanging a heavy object; Figure 8 It is a structural schematic diagram of the hook portion of the present invention after the load rod is released when the load is hung on the hook portion; Figure 9 It is a structural schematic diagram of the mobile rack of the present invention; Figure 10 It is a structural schematic diagram of the end portion of the U-shaped plate of the present invention; Figure 11 It is a schematic diagram of the external structure of the swing shell of the present invention.

[0019] In the figure: 1. Gantry; 2. Mobile base; 3. Mobile frame; 301. Sliding seat; 302. Elastic telescopic rod; 303. Mounting plate; 4. First winch; 5. Hook part; 6. Second winch; 7. Load-carrying rod; 701. Ball bearing; 8. Lifting plate; 801. L-shaped rod; 802. First connecting rod; 803. Second connecting rod; 8031. Baffle; 804. Lifting slot; 805. Concave hole; 9. Swing shell; 901. U-shaped plate; 902. Support plate; 903. Push rod; 10. Wedge block; 1001. Top plate; 1002. Elastic element; 11. Movable plate; 111. Plate body; 112. Sliding rod; 113. Limiting plate; 12. Positioning ring; 13. Guide tube; 14. Traction rope. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0022] like Figure 1 and Figure 4 As shown, this embodiment proposes a small-scale lifting and hoisting equipment for urban and rural construction, including a gantry 1, and also includes: a mobile base 2, a mobile frame 3, a second winch 6 and an auxiliary support mechanism. The gantry 1 serves as the main supporting structure, and the movable bases 2 installed on both sides realize overall displacement; the mobile frame 3 is connected to the crossbeam of the gantry 1 through a slide rail, and carries a first winch 4 and a hook part 5; the second winch 6 is arranged on one side of the gantry 1 through a support, and the second winch 6 is used to drive the mobile frame 3 to move along the crossbeam of the gantry 1 through a second steel wire rope; the auxiliary support mechanism is arranged on both sides of the gantry 1, for auxiliary supporting the heavy object hooked by the hook part 5, and the auxiliary support mechanism includes a load rod 7, a first swing assembly for driving the load rod 7 to move, and a second swing assembly for driving the first swing assembly to move; By pushing the mobile base 2, the entire equipment is moved to the working position, the second winch 6 is operated to retract and release the second wire rope, and the mobile frame 3 is driven to accurately position horizontally. The first winch 4 lowers the hook part 5 to hook the heavy object and then lift it. Through the lifting and lowering action of the hook part 5, the first swing assembly and the second swing assembly work together, and the mechanical linkage controls the expansion width and support timing of the load-bearing rod 7, which not only solves the shaking problem, but also realizes the compactness of the equipment, and adapts to the space and economic requirements of urban and rural construction.

[0023] like Figure 1 、 Figure 4 and Figure 9 As shown, as a preferred embodiment, on the basis of the above method, the movable frame 3 further includes a slide 301 slidingly arranged with the crossbeam of the gantry 1, an elastic telescopic rod 302 fixed on the slide 301 and a mounting plate 303 arranged on the top of the elastic telescopic rod 302, and the first winch 4 is fixed on the mounting plate 303; the slide 301 is slidably connected to the crossbeam of the gantry 1 through a guide rail to achieve lateral movement, the elastic telescopic rod 302 adopts a spring or hydraulic buffer structure, is vertically fixed to the top of the slide 301, the mounting plate 303 is rigidly connected to the top of the elastic telescopic rod 302, and the first winch 4 is fixed to the plane of the mounting plate 303 by bolts; the slide 301 slides along the crossbeam of the gantry 1, driving the first winch 4 to accurately position to the lifting point. When lifting heavy objects, the elastic telescopic rod 302 is compressed to absorb impact force to prevent the wire rope from being overloaded and broken. The mounting plate 303 provides rigid support for the first winch 4 to ensure that there is no deviation during the lifting process.

[0024] like Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, as a preferred embodiment, on the basis of the above method, further, the second swing assembly includes a lifting plate 8 connected to the gantry 1 in a sliding manner, 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 connected between the first connecting rod 802 and the gantry 1 through a pin. The first swing assembly is arranged on the second connecting rod 803, and the lifting plate 8 is vertically slidably connected to the gantry 1 through a lifting slot 804 to achieve up and down movement. Displacement; the external power, that is, the hook part 5, can lift the lifting plate 8. When the hook part 5 moves downward, the lifting plate 8 moves downward under the action of its own gravity, so that the lifting plate 8 slides up and down along the lifting groove 804. The L-shaped rod 801 converts the linear motion of the lifting plate 8 into an inclined motion of the first connecting rod 802. The second connecting rod 803 rotates around the pin shaft, driving the first swing assembly to expand or retract the load rod 7; through the cooperation of the first swing assembly and the second swing assembly, the volume of the lifting equipment is reduced, which is convenient for passing through narrow alleys and convenient for lifting operations in old communities.

[0025] like Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 10 and Figure 11 As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, 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 1, support plates 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 opposed to the swing shell 9. The torsion spring preload on the rotating shaft ensures the reset function, and the U-shaped plate 901 is slidably connected to the mounting plate 303. When the second swing assembly drives the first swing assembly away from the gantry 1, the swing shell 9 moves away from the gantry 1 and resets and tilts under the action of the torsion spring. At this time, the proximal end of the swing shell 9 is higher than the distal end of the gantry 1. When the mounting plate 303 moves downward, 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 1 is lowered and the distal end is raised, so that the load-bearing rod 7 in the swing shell 9 can slide from the high end to the low end, so that the distance between the two sides of the gantry 1 is reduced, thereby forming a support platform for heavy objects. It should be noted that in order to reduce the wear and movement resistance of the heavy object on the load-bearing rod 7, the load-bearing rod 7 is slidably connected between the swing shells 9 on both sides of the gantry 1, and the load-bearing rod 7 is provided with a number of balls 701 along its axial direction. The second connecting rod 803 is provided with a baffle 8031 ​​that is movably opposed to the swing shell 9. The setting of the baffle 8031 ​​can effectively limit and support the flipped swing shell 9, thereby ensuring the support stability of the load-bearing rod 7 for the heavy object.

[0026] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 10 and Figure 11 As shown, as a preferred embodiment, on the basis of the above method, further, a wedge block 10 is slidably connected in the swing shell 9 and is movably opposed to the load rod 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; Furthermore, the bottom of the lifting plate 8 is slidably connected to a movable plate 11, a traction rope 14 is provided between the movable plate 11 and the top plate 1001, and the movable plate 11 and the hook portion 5 are movably opposed to each other; When the first swing assembly is in motion, the support plate 902 at the end of the U-shaped plate 901 presses down the swing shell 9 through the top rod 903, causing the swing shell 9 to deflect relative to the second connecting rod 803, so that the end of the swing shell 9 close to the side wall of the gantry 1 is at the lower side, and the end of the swing shell 9 away from the side wall of the gantry 1 is at the upper side. However, at this time, the load-bearing rods 7 between the swing shells 9 on both sides of the gantry 1 are blocked by the wedge blocks 10 and cannot slide down along the inclined swing shells 9. The hook part 5 drives the weight to cross the two load-bearing rods 7 and continue 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, so that the top plate 1001 drives the wedge block 10 to move relative to the swing shell 9. The wedge block 10 The load rod 7 is no longer restricted, and the unrestricted load rod 7 moves down along the inclined swing shell 9. At this time, the distance between the load rods 7 on both sides of the gantry 1 is shortened, and then the first winch 4 lowers the hook part 5, so that the weight hooked by the hook part 5 slowly falls on the two load rods 7, providing auxiliary support for the hooked weight; when the swing shell 9 is close to one end of the gantry 1 and is on the upper side again, the load rod 7 will slide down from the high end of the swing shell 9 to the low end, and in this process, the load rod 7 applies a thrust to the inclined surface of the wedge block 10, so that the wedge block 10 avoids the load rod 7. After the load rod 7 passes over 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 the positioning of the load rod 7; 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 in sequence along the L-shaped rod 801, the first connecting rod 802 and the length direction of 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, and the top of the swing shell 9 is provided with a guide tube 13 for the traction rope 14 to pass through. The traction rope 14 is guided by the provided positioning ring 12 and the guide tube 13.

[0027] like Figure 1 and Figure 2 As shown, as a preferred embodiment, on the basis of the above method, further, the movable plate 11 includes a plate body 111 and a slide rod 112 fixed on the plate body 111, a limit plate 113 is fixed on the slide rod 112, and a recessed hole 805 for the slide rod 112 to slide is opened on the lifting plate 8; when the hook portion 5 is pulled up by the first steel wire rope, a thrust is first applied to the movable plate 11, and the movable plate 11 slides in the recessed hole 805 through the slide rod 112. At this time, the lifting plate 8 will not be displaced temporarily under the action of its own gravity. As the movable plate 11 rises and abuts against the lifting plate 8, the force applied to the movable plate 11 is transmitted to the lifting plate 8, and the lifting plate 8 rises synchronously with the movable plate 11.

[0028] like Figure 1 and Figure 4As shown, as a preferred embodiment, on the basis of the above method, further, the second steel wire rope of the second winch 6 is provided with two groups, and the ends of the two groups of second steel wire ropes away from the second winch 6 are respectively fixed to the two ends of the movable frame 3 to form a symmetrical traction structure, and the two groups of second steel wire ropes are retracted and released to drive the movable frame 3 to move left or right along the crossbeam of the gantry 1; the second winch 6 tightens the left steel wire rope and loosens the right steel wire rope at the same time, pulling the movable frame 3 to slide to the right, and retracts and releases the steel wire rope group in the opposite direction to drive the movable frame 3 to move to the left. The length of the steel wire rope retraction and release 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 both existing structures and will not be elaborated here.

[0029] Working principle: When the hoisting equipment is not in use, the hook portion 5 of the first winch 4 is reeled up and lifts the lifting plate 8 upward through the movable plate 11. The L-shaped rod 801 connected to the end of the lifting plate 8 pulls up the second connecting rod 803 through the first connecting rod 802, so that the second connecting rod 803 approaches the side wall of the gantry 1. When the swing shell 9 of the first swing assembly approaches the side wall of the gantry 1, it abuts against the side wall of the gantry 1 and then flips over, so that the swing shell 9 is gradually placed vertically, shortening the deployment space of the swing shell 9, thereby reducing the space occupied by the hoisting equipment when not in use; When it is necessary to hoist a heavy object, the hoisting device is moved to the heavy object to be hoisted through the mobile base 2, the hook part 5 is placed just above the heavy object, the first winch 4 lowers the hook part 5 through the first twisted wire rope, the hook part 5 no longer lifts the lifting plate 8, the lifting plate 8 and the movable plate 11 automatically move downward under the action of their own gravity, and the L-shaped rod 801 at the end of the lifting plate 8 presses down one end of the second connecting rod 803 through the first connecting rod 802, so that the second connecting rod 803 is aligned with the gantry 1 The hinge point is deflected at the center of the circle. When the second connecting rod 803 deflects, it drives the swing shell 9 away from the side wall of the gantry 1. The swing shell 9 no longer abuts against the side wall of the gantry 1 and is reset under the action of the torsion spring. At this time, the end of the swing shell 9 close to the gantry 1 is on the upper side, and the side away from the gantry 1 is on the lower side. The load rod 7 is on the lower side of the swing shell 9. At this time, the distance between the load rods 7 on both sides of the gantry 1 is wide, which can meet the requirements of heavy objects being lifted up with the hook part 5 and crossing the distance between the two load rods 7; As the hook portion 5 hooks the weight, the first winch 4 pulls up the hook portion 5 through the first steel wire rope, and the first winch 4 is subjected to the reaction force of the weight, and the first winch 4 drives the mounting plate 303 to press down the elastic telescopic rod 302, and the mounting plate 303 drives the U-shaped plate 901 to move down synchronously, and the support plate 902 at the end of the U-shaped plate 901 presses down the swing shell 9 through the top rod 903, so that the swing shell 9 deflects relative to the second connecting rod 803, so that the end of the swing shell 9 close to the side wall of the gantry 1 is at the lower side, and the end of the swing shell 9 away from the side wall of the gantry 1 is at the upper side, but at this time the load-bearing rod 7 between the swing shells 9 on both sides of the gantry 1 is blocked by the wedge block 10 and cannot move forward As the tilted swing shell 9 slides down, the hook part 5 drives the weight to pass over the two load bars 7 and then continues to move upward until the hook part 5 lifts the movable plate 11, and 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, so that the top plate 1001 drives the wedge block 10 to move relative to the swing shell 9. The wedge block 10 no longer restricts the load bar 7. The unrestricted load bar 7 moves down along the tilted swing shell 9. At this time, the distance between the load bars 7 on both sides of the gantry 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 on the two load bars 7, providing auxiliary support for the hooked weight. Then, the second winch 6 is used in conjunction with the second wire rope to apply tension to the mobile frame 3, so that the mobile frame 3 moves along the crossbeam of the gantry frame 1, and then the mobile frame 3 drives the heavy object to be lifted and transferred smoothly through the hook part 5 connected to the first winch 4.

[0030] The drawings in this application are for illustrative purposes only. The sizes and shapes of the components shown are not intended to be limiting but are merely schematic representations. In actual implementation, the components may be appropriately configured and adjusted based on specific needs and actual conditions.

[0031] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A small-sized lifting and hoisting equipment for urban and rural construction, comprising a gantry (1), characterized in that: Also includes: A movable base (2), wherein two movable bases (2) are provided and are respectively arranged on both sides of the gantry (1) and are used to move the gantry (1); A movable frame (3), the movable frame (3) being slidably connected to a crossbeam of the gantry frame (1), the movable frame (3) being provided with a first winch (4), the first winch (4) being connected to a hook portion (5) via a first steel wire rope; A second winch (6), the second winch (6) being arranged on one side of the gantry (1) via a support, and the second winch (6) being used to drive the movable frame (3) to move along the crossbeam of the gantry (1) via a second steel wire rope; and an auxiliary support mechanism, the auxiliary support mechanism being arranged on both sides of the gantry (1) and being used for auxiliary supporting a heavy object hooked by the hook portion (5), the auxiliary support mechanism comprising a load-bearing rod (7), a first swinging assembly for driving the load-bearing rod (7) to move, and a second swinging assembly for driving the first swinging assembly to move.

2. A small-sized lifting and hoisting equipment for urban and rural construction according to claim 1, characterized in that: The mobile frame (3) comprises a slide (301) slidably arranged with the crossbeam of the gantry frame (1), an elastic telescopic rod (302) fixed on the slide (301), and a mounting plate (303) arranged on the top of the elastic telescopic rod (302); the first winch (4) is fixed on the mounting plate (303).

3. A small-sized lifting and hoisting equipment for urban and rural construction according to claim 2, characterized in that: The second swing assembly comprises a lifting plate (8) connected to the gantry (1) in a sliding manner, 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 (1) via a pin shaft, the first swing assembly being arranged on the second connecting rod (803), and a lifting groove (804) for the sliding of the lifting plate (8) being provided on the gantry (1).

4. A small-sized lifting and hoisting equipment for urban and rural construction according to claim 3, characterized in that: The first swing assembly comprises 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 (1), support plates (902) fixedly arranged on both sides of each end of the U-shaped plate (901), and a top rod (903) fixedly connected to the support plates (902) and movably opposed to the swing shell (9), a torsion spring for driving the swing shell (9) to reset and rotate is provided on the rotating shaft, and the U-shaped plate (901) is slidably connected to the mounting plate (303).

5. A small-sized lifting and hoisting equipment for urban and rural construction according to claim 4, characterized in that: The load-bearing rod (7) is slidably connected between the swing shells (9) on both sides of the gantry (1); the load-bearing rod (7) is provided with a plurality of balls (701) along its axial direction; and the second connecting rod (803) is provided with a baffle (8031) that is movably opposed to the swing shell (9).

6. A small-sized lifting and hoisting equipment for urban and rural construction according to claim 5, characterized in that: A wedge block (10) is slidably connected in the swing shell (9) and is movably opposed to the load-bearing rod (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).

7. A small-sized lifting and hoisting equipment for urban and rural construction according to claim 6, characterized in that: The bottom of the lifting plate (8) is slidably connected to a movable plate (11), a traction rope (14) is provided between the movable plate (11) and the top plate (1001), and the movable plate (11) and the hook portion (5) are movably opposed to each other.

8. A small-sized lifting and hoisting equipment for urban and rural construction according to claim 7, characterized in that: The end of the traction rope (14) away from the lifting plate (8) is arranged in sequence along the length direction 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); and the top of the swing shell (9) is provided with a guide tube (13) for the traction rope (14) to pass through.

9. A small-sized lifting and hoisting equipment for urban and rural construction according to claim 8, characterized in that: The movable plate (11) comprises a plate body (111) and a slide rod (112) fixed on the plate body (111); a limit plate (113) is fixed on the slide rod (112); and a recessed hole (805) for the slide rod (112) to slide is provided on the lifting plate (8).

10. The small-sized lifting and hoisting equipment for urban and rural construction according to claim 1, characterized in that: The second winch (6) is provided with two groups of second steel wire ropes, and the ends of the two groups of second steel wire ropes away from the second winch (6) are respectively fixed to the two ends of the movable frame (3). By retracting and extending the two groups of second steel wire ropes, the movable frame (3) is driven to move left or right along the crossbeam of the gantry frame (1).

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