A small lifting and handling equipment

Abstract

The present invention discloses a small-scale lifting and handling equipment, which belongs to the technical field of lifting and handling equipment. When the existing small-scale lifting equipment is faced with the lifting and installation of equipment in a confined space, its coverage radius cannot meet the operation requirements; a frame plate and two rotatably mounted support plates are connected to one side of the main seat of the present invention, and a linkage control part is installed on the frame plate; a support part is rotatably mounted on the main seat, and the support part is rotatably connected to the lifting part, and the height of the rotation connection point can be controlled; the linkage control part controls the inclination angle of the main arm and the telescopic arm and provides supporting force at the same time; when the linkage control part synchronously controls the opening of the two support plates, the support radius of the lifting and handling equipment is increased at the same time; universal wheels are installed at the bottom of the main seat, the two support plates and the linkage control part, and support adjustment parts are installed at the outer ends of the two support plates and the linkage control part at the same time, and the support adjustment parts are used for positioning the equipment during lifting, so as to realize the safety and stability of lifting, increase the lifting coverage range, and can lift the installation equipment to a confined space.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting and handling equipment, and in particular to small hoisting and handling equipment. Background Art

[0002] During the power construction process, some electromechanical equipment often needs to be hoisted and moved. Since these electromechanical equipment are not heavy and the hoisting height is not high, generally 3-4 meters, such as transformers, distribution boxes or motors, when hoisting and installing these equipment, the existing method is mainly to use a truck crane or a lift truck for lifting. When performing hoisting operations indoors, the truck crane cannot meet the applicable scenarios. Generally, a gantry crane or a lift truck is used for lifting assistance. Whether it is a gantry crane or a lift truck, when lifting and installing equipment in some confined spaces, due to its small lifting coverage radius, it cannot meet the lifting needs. In the end, the only solution is to set up scaffolding, which takes a long construction period and reduces work efficiency.

[0003] Based on the above problems, the present invention proposes a small lifting and handling equipment. Summary of the Invention

[0004] In response to the problems in the above technical background, the purpose of the present invention is to provide a small-scale lifting and handling equipment, which solves the problem proposed in the background technology that the existing small-scale lifting equipment cannot be used in a variety of lifting operation scenarios, and when facing the lifting and installation of equipment in confined spaces, its coverage radius cannot meet the operational requirements.

[0005] In order to achieve the above objectives, the technical solution adopted by the present invention is:

[0006] A small-scale lifting and handling equipment comprises a lifting vehicle seat, wherein the main seat included in the lifting vehicle seat is rotatably mounted on one side of two support plates, and the other side of the main seat is mounted on a wire taking-up part, the main seat is connected to one side of a frame plate, the frame plate is located between the two support plates, and a linkage control part is installed on the frame plate; the support part is rotatably mounted on the main seat, the support part comprises a large arm, a sliding seat and a third telescopic member for controlling the lifting and lowering of the sliding seat, one side of the sliding seat is rotatably connected to a lifting part, the lifting part comprises a telescopic arm and a fourth telescopic member for controlling the extension and retraction of the telescopic arm, one end of the fourth telescopic member is rotatably connected to one side of the top of the large arm, and the fourth telescopic member simultaneously provides an oblique pulling force for the telescopic arm; the linkage control part controls the inclination angle of the large arm and the telescopic arm and provides supporting force at the same time; when the linkage control part synchronously controls the opening of the two support plates, the support radius of the lifting and handling equipment is increased; universal wheels are installed at the bottom of the main seat, the two support plates and the linkage control part, and support adjustment members are simultaneously installed at the outer ends of the two support plates and the linkage control part, which are used to position the equipment during lifting.

[0007] In the above technical solution, after the lifting and handling equipment is positioned by the support adjustment part, the elevation angle of the boom and the telescopic arm is controlled by the linkage control part. The lifting height range can be increased by rotating the lifting part on one side of the sliding seat. At the same time, the pulling force of the telescopic arm can be transmitted to the boom while controlling the extension and retraction of the telescopic arm by the fourth telescopic part. Since the sliding seat on the boom is rotatably connected to the telescopic arm, a two-way stable force state is achieved; the linkage control part controls the elevation angle of the boom and can drive the support plates on both sides to open, thereby increasing the lateral support range. At the same time, the linkage control part increases the support radius of the lifting and handling equipment by moving outward, that is, reduces the torsional radius of the hoisted object relative to the lifting and handling equipment. The function of reducing torque is realized under the condition of increasing the safety and stability of lifting, and at the same time increasing the lifting coverage of the telescopic arm, which can meet the need of lifting the installation equipment into a confined space. At the same time, the lifting and handling equipment proposed by the present invention can also play a carrying function, that is, by retracting the telescopic arm so that the center of gravity of the lifting equipment is located within the support range of the support plates on both sides and the linkage control part, and retracting the support adjustment part, the effect of controlling the movement of the equipment handling equipment can be achieved. This function can save the use of excessive relief in the middle of the handling vehicle when carrying out equipment transfer, lifting or recycling warehouses, and finally realizes the function of safe and stable lifting using a variety of operating scenarios, and the lifting and handling equipment can be retracted and takes up little space.

[0008] In the above technical solution, further, a rotating seat is provided on the main seat, and a plurality of arc-shaped sockets are symmetrically provided on the two side plates of the rotating seat. The bottom end of the upper arm is rotatably installed on the rotating seat, and locking holes are symmetrically provided on the front and rear sides of the upper arm. The rotation of the upper arm is locked by inserting pins on the sockets.

[0009] In the above technical solution, further, a cross-shaped slide groove running through the four side surfaces is provided above the upper arm, the bottom of the cross-shaped slide groove is connected to the equipment groove with an inner recess, the third telescopic part is installed in the equipment groove, the top of the third telescopic part is connected to the sliding seat, the front and back surfaces of the sliding seat are symmetrically installed in the cross-shaped slide groove, the right end of the sliding seat is rotatably connected to the telescopic arm, and a first inner groove is provided in the inner recess on the left side of the top of the upper arm, and a first pulley is installed in the first inner groove.

[0010] In the above technical solution, further, the telescopic arm includes a lifting arm and a telescopic arm, one end of the lifting arm is rotatably connected to the right end of the sliding seat, and a telescopic groove passing through the other end is provided in the lifting arm, and the cross-section of the telescopic groove is I-shaped. The telescopic arm cooperates with the telescopic groove, and one end of the telescopic arm is slidably installed in the telescopic groove, and the top left side of the telescopic groove is connected to the through groove passing through the top surface of the lifting arm. The top of one end of the telescopic arm is rotatably connected to the fourth telescopic part, and the other end of the fourth telescopic part passes through the through groove and is rotatably connected to the right side of the top of the arm. A second inner groove is recessed in the top of the other end of the telescopic arm, and a second pulley is installed in the second inner groove.

[0011] In the above technical solution, further, the wire rope included in the take-up part is connected to a sling through a first pulley and a second pulley.

[0012] In the above technical solution, further, a rotation groove is symmetrically concave on one side of the main seat, one end of the support plate is rotatably installed in the rotation groove, and a plurality of linearly distributed positioning holes are provided on the top of the support plate. A two-way rotating seat is installed near the top of the outer end of the frame plate, and two limit rods are rotatably installed on the two-way rotating seat. A pin is inserted into the rotating end of the limit rod, and the bottom end of the pin is simultaneously inserted into the positioning hole to rotationally fix the support plate.

[0013] In the above technical solution, further, a first sliding groove is provided in the frame plate which passes through the right end, the first sliding groove is connected to the side sliding groove front and back, the first sliding groove is connected to the second sliding groove up and down, and the sliding plate included in the linkage control part is slidably installed on the first sliding groove, the right end of the sliding plate extends out of the first sliding groove, and the left end of the sliding plate is symmetrically connected to a driving connecting rod for front and back rotation, and the other end of the driving connecting rod passes through the side sliding groove and is rotationally connected to the outer side of the support plate on the same side.

[0014] In the above technical solution, further, the first telescopic member and the second telescopic member are rotatably installed at the top of the left end of the sliding plate, the telescopic end of the first telescopic member is rotatably connected to the lower side of the arm, and the telescopic end of the second telescopic member is rotatably connected to the lower middle part of the lifting arm.

[0015] In the above technical solution, further, support adjustment parts are installed on the outer ends of the two support plates and the right end of the sliding plate. The support adjustment parts include a handle, a threaded rod, a rotating joint and a support plate connected in sequence. The threaded rod passes through the outer ends of the support plates and the right end of the sliding plate. The threaded rod is rotated by the handle to control the lifting and lowering of the support plate. When lifting is required, the lifting and handling equipment can be positioned through the support of the support adjustment parts without sliding, thereby increasing the stability of the lifting.

[0016] In the above technical solution, further, the first telescopic member, the second telescopic member, the third telescopic member and the fourth telescopic member adopt electric telescopic rods. Since the required lifting equipment is not heavy, the use of existing electric telescopic rods has the characteristics of low cost and high control accuracy.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] After the hoisting and handling equipment is positioned by the support adjustment part, the elevation angle of the boom and the telescopic arm is controlled by the linkage control part. The lifting height range can be increased by rotating the lifting part on one side of the sliding seat. At the same time, the pulling force of the telescopic arm can be transmitted to the boom while controlling the extension and retraction of the telescopic arm by the fourth telescopic part. Since the sliding seat on the boom is rotatably connected to the telescopic arm, a two-way stable force state is achieved; the linkage control part controls the elevation angle of the boom and can drive the support plates on both sides to open, thereby increasing the lateral support range. At the same time, the linkage control part moves outward to increase the support radius of the hoisting and handling equipment, that is, to reduce the torsional radius of the hoisted object relative to the hoisting and handling equipment, and to achieve the same weight. The function of reducing torque is now realized, which increases the safety and stability of lifting and increases the lifting coverage of the telescopic arm, which can meet the needs of lifting the installation equipment into a confined space. At the same time, the lifting and handling equipment proposed by the present invention can also play a carrying function, that is, by retracting the telescopic arm so that the center of gravity of the lifting equipment is within the support range of the support plates on both sides and the linkage control part, and retracting the support adjustment part can achieve the effect of controlling the movement of the equipment handling equipment. This function can save the use of excessive relief in the middle of the handling vehicle when carrying out equipment transfer, lifting or recycling warehouses, and finally realizes the function of safe and stable lifting using a variety of operating scenarios, and the lifting and handling equipment can be retracted and takes up little space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of the lifting and handling equipment provided by an embodiment of the present invention Figure 1 ;

[0020] Figure 2 A three-dimensional diagram of the lifting and handling equipment provided by an embodiment of the present invention Figure 2 ;

[0021] Figure 3 A three-dimensional diagram of a support portion provided by an embodiment of the present invention;

[0022] Figure 4 A three-dimensional diagram of a hoisting portion provided in an embodiment of the present invention;

[0023] Figure 5 A perspective view of the installation of a lifting vehicle seat and a linkage control unit provided in an embodiment of the present invention;

[0024] Figure 6A three-dimensional diagram of a linkage control unit provided in an embodiment of the present invention;

[0025] Figure 7 A three-dimensional diagram of a lifting vehicle seat provided in an embodiment of the present invention.

[0026] In the figure: 100, hoisting vehicle seat; 110, main seat; 111, rotating groove; 112, rotating seat; 113, socket; 114, pin; 120, frame plate; 121, first sliding groove; 122, side sliding groove; 123, second sliding groove; 124, two-way rotating seat; 130, support plate; 131, positioning hole; 140, limit rod; 141, latch; 150, take-up unit;

[0027] 200, support adjustment member; 210, handle; 220, threaded rod; 230, rotary joint; 240, support plate;

[0028] 300, linkage control unit; 310, sliding plate; 320, first telescopic member; 330, second telescopic member; 340, driving connecting rod;

[0029] 400, support portion; 410, upper arm; 411, equipment slot; 420, cross-shaped slide; 430, first inner groove; 440, first pulley; 450, third telescopic member; 460, sliding seat; 461, side sliding wing; 470, locking hole;

[0030] 500, hoisting part; 510, hoisting arm; 520, telescopic slot; 530, through slot; 540, telescopic arm; 541, second inner groove; 542, second pulley; 550, fourth telescopic member;

[0031] 600. Universal wheel. DETAILED DESCRIPTION

[0032] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0033] Example 1

[0034] like Figure 1-7As shown, a small-scale lifting and handling equipment includes a lifting vehicle seat 100, a main seat 110 of the lifting vehicle seat 100 is rotatably mounted on one side with two support plates 130, a wire take-up unit 150 is mounted on the other side of the main seat 110, a wire rope included in the wire take-up unit 150 is connected to a sling through a first pulley 440 and a second pulley 542, the wire take-up unit 150 is composed of an existing motor, a wire take-up drum and other components, a frame plate 120 is connected to one side of the main seat 110, and the main seat 110 and the frame plate 120 are connected in a T-shape, and the frame plate 120 is connected to the main seat 110. 0 is located between the two support plates 130. In the non-transportation and hoisting state, the two support plates 130 rotate and retract to form a square with the main seat 110 and the frame plate 120 to reduce the storage space. The linkage control unit 300 is installed on the frame plate 120; the support unit 400 is rotatably installed on the main seat 110. The support unit 400 includes a large arm 410, a sliding seat 460 and a third telescopic member 450 for controlling the lifting of the sliding seat 460. One side of the sliding seat 460 is rotatably connected to the hoisting unit 500, and the hoisting unit 500 includes The fourth telescopic member 550 includes a telescopic arm and a control member for extending and retracting the telescopic arm. One end of the fourth telescopic member 550 is rotatably connected to one side of the top of the boom 410. The fourth telescopic member 550 also provides oblique pulling force for the telescopic arm. The linkage control unit 300 cooperates with the support adjustment member 200 to control the inclination angle of the boom 410. The linkage control unit 300 can also control the inclination angle of the telescopic arm and provide support force during lifting. When the linkage control unit 300 synchronously controls the opening of the two support plates 130, it increases the support radius of the lifting and handling equipment, increases the stability of the lifting, and increases the extension coverage of the lifting telescopic arm. Universal wheels 600 are installed at the bottom of the sliding plate 310 included in the main seat 110, the two support plates 130 and the linkage control unit 300, which are convenient to move when transporting equipment. The outer ends of the two support plates 130 and the linkage control unit 300 are simultaneously installed with support adjustment members 200. The support adjustment member 200 is used to position the equipment during lifting. When the equipment is hoisted and transported, the support adjustment member 200 is retracted.

[0035] Principle of lifting and handling:

[0036] After the lifting and handling equipment is positioned by the support adjustment member 200, the elevation angle of the boom 410 and the telescopic arm is controlled by the linkage control unit 300. The angle of the boom 410 does not need to be adjusted every time it is lifted. By setting the elevation angle used normally, it can be rotated and locked by the pin 114, and then the support adjustment member 200 is released. The lifting height range can be increased by rotating the sliding seat 460 on one side, and the lifting part can be connected to the lifting height range. At the same time, the fourth telescopic member 550 can be used to control the extension and retraction of the telescopic arm while transmitting the pulling force of the telescopic arm to the boom 410. Since the sliding seat 460 on the boom 410 is rotatably connected to the telescopic arm, a two-way stable force state is achieved; the linkage control unit 300 can also drive the support plates 130 on both sides to open, thereby increasing the lateral support range. At the same time, the linkage control unit 300 moves outward to increase the lifting and handling equipment The support radius of the equipment is reduced, that is, the torsional radius of the hoisted object relative to the hoisting and handling equipment is reduced, and the function of reducing torque is achieved under the condition of the same weight, which increases the safety and stability of the hoisting. At the same time, the hoisting coverage of the telescopic arm is increased, which can meet the needs of hoisting the installation equipment into a confined space. At the same time, the hoisting and handling equipment proposed by the present invention can also play a carrying function, that is, by retracting the telescopic arm so that the center of gravity of the hoisting equipment is located within the support range of the support plates 130 on both sides and the linkage control part 300, and retracting the support adjustment part 200 can achieve the effect of controlling the movement of the equipment handling equipment. This function can save the use of excessive relief in the middle of the handling vehicle when carrying out equipment transfer, hoisting or recycling warehouses, and finally realizes the function of using a variety of operation scenarios to perform safe and stable hoisting, and the hoisting and handling equipment can be retracted and takes up a small space.

[0037] like Figure 1 、 3 As shown in Figures 7 and 8, a rotating seat 112 is provided on the main seat 110, and a plurality of arc-shaped sockets 113 are symmetrically provided on the two side plates of the rotating seat 112. The bottom end of the boom 410 is rotatably mounted on the rotating seat 112. The angle of the boom 410 does not need to be adjusted every time it is hoisted. The rotation can be locked by the pin 114 by setting the elevation angle for normal use. Locking holes 470 are symmetrically provided on the front and rear sides of the boom 410, and the rotation of the boom 410 is locked by inserting the pin 114 on the socket 113.

[0038] like Figure 1 、 3As shown, a cross-shaped slide groove 420 is provided above the upper arm 410 and passes through the four side surfaces. The bottom of the cross-shaped slide groove 420 is connected to the inner recess and provided with an equipment groove 411 for installing the third telescopic member 450. The installation stability of the third telescopic member 450 is improved by setting the equipment groove 411. At the same time, the specification length of the third telescopic member 450, that is, the telescopic stroke, is increased under the condition of the same height of the upper arm 410. The top of the third telescopic member 450 is connected to the sliding seat 460. The front and rear surfaces of the sliding seat 460 are symmetrically installed in the cross-shaped slide groove 420 through side sliding wings 461. The right end of the sliding seat 460 is rotatably connected to the telescopic arm. A first inner groove 430 is provided in the inner recess on the left side of the top of the upper arm 410, and a first pulley 440 is installed in the first inner groove 430.

[0039] like Figure 4 As shown, the telescopic arm includes a lifting arm 510 and a telescopic arm 540. One end of the lifting arm 510 is rotatably connected to the right end of the sliding seat 460. A telescopic slot 520 is provided in the lifting arm 510 and passes through the other end. The cross section of the telescopic slot 520 is I-shaped. The telescopic arm 540 cooperates with the telescopic slot 520. The cross section of the telescopic arm 540 is also I-shaped, which increases the structural strength on the one hand and the sliding stability on the other hand. One end of the telescopic arm 540 is slidably installed in the telescopic slot 520. The top left side of the telescopic slot 520 is connected to the through slot 530 that passes through the top surface of the lifting arm 510. The top of one end of the telescopic arm 540 is rotatably connected to the fourth telescopic part 550, and the other end of the fourth telescopic part 550 passes through the through slot 530 and is rotatably connected to the right side of the top of the arm 410. The telescopic arm 540 is pushed to slide on the telescopic slot 520 by controlling the extension of the fourth telescopic part 550. At the same time, the fourth telescopic part 550 also plays a role in providing reverse pulling force during hoisting, thereby increasing the stability of the telescopic arm hoisting. A second inner groove 541 is recessed in the top of the other end of the telescopic arm 540, and a second pulley 542 is installed in the second inner groove 541. The wire rope hangs down through the second pulley 542 and is connected to the sling.

[0040] like Figure 7 As shown, a rotation groove 111 is symmetrically concave on one side of the main seat 110, and one end of the support plate 130 is rotatably installed in the rotation groove 111. This design allows the support plates 130 on both sides to be merged with the frame plate 120 when the support plate 130 is reset, reducing the occupied space. A plurality of linearly distributed positioning holes 131 are provided on the top of the support plate 130, and a two-way rotating seat 124 is installed near the top of the outer end of the frame plate 120. Two limit rods 140 are rotatably installed on the two-way rotating seat 124, and the rotating end of the limit rod 140 is inserted with a latch 141. The bottom end of the latch 141 is simultaneously inserted into the positioning hole 131 to rotate and fix the support plate 130. When adjusting the opening of the support plate 130, the latch 141 needs to be pulled out. After the adjustment is completed, the support plate 130 is locked relative to the frame plate 120 by the latch 141 to avoid deflection and sliding.

[0041] like Figure 5-7 As shown, a first sliding groove 121 is provided in the frame plate 120 that passes through the right end. The first sliding groove 121 is connected to the side sliding groove 122 in front and back, and is connected to the second sliding groove 123 in top and bottom. A sliding plate 310 included in the linkage control unit 300 is slidably installed on the first sliding groove 121. The right end of the sliding plate 310 extends out of the first sliding groove 121. The left end of the sliding plate 310 is symmetrically connected to a driving link 340 for front and back rotation. The other end of the driving link 340 passes through the side sliding groove 122 and is rotatably connected to the outer side of the support plate 130 on the same side.

[0042] The first telescopic member 320 and the second telescopic member 330 are rotatably mounted on the top of the left end of the sliding plate 310. The telescopic end of the first telescopic member 320 is rotatably connected to the lower side of the boom 410, and the telescopic end of the second telescopic member 330 is rotatably connected to the lower middle portion of the lifting boom 510.

[0043] When controlling the positioning of the equipment, first, the support adjustment member 200 installed at the outer end of the frame plate 120 and the support plate 130 is adjusted to extend and support the positioning, and then the elevation angle of the boom 410 is controlled by controlling the extension of the first telescopic member 320. After adjusting to the required elevation angle, the boom 410 is rotated and locked. This step does not need to be adjusted every time the equipment is hoisted. It can be rotated and locked after adjusting to the elevation angle of the boom 410 that meets the normal hoisting operation.

[0044] The three support adjustment members 200 are controlled to retract, and the sliding plate 310 is pushed outward by controlling the extension of the first telescopic member 320. During the extension of the sliding plate 310 outward, the driving connecting rods 340 on both sides push the support plates 130 on both sides to open. After opening to the specified angle, the two limit rods 140 and the latch 141 are used to limit the opening angle of the support plates 130 on both sides. At this time, the three support adjustment members 200 are controlled to extend for positioning, thereby completing the positioning of the lifting and handling equipment.

[0045] like Figure 7 As shown, the outer ends of the two support plates 130 and the right end of the sliding plate 310 are both installed with support adjustment members 200, and the support adjustment member 200 includes a handle 210, a threaded rod 220, a rotary joint 230 and a support plate 240 connected in sequence. The threaded rod 220 passes through the outer ends of the support plates 130 and the right end of the sliding plate 310. The threaded rod 220 is rotated by the handle 210 to control the lifting and lowering of the support plate 240. Before hoisting, select the working area, and rotate the threaded rod 220 by the handle 210 to control the lifting and lowering of the support plate 240. The support plate 240 is supported on the ground to achieve positioning of the hoisting and handling equipment without sliding, thereby increasing the stability of the hoisting.

[0046] In the present invention, the first telescopic member 320, the second telescopic member 330, the third telescopic member 450 and the fourth telescopic member 550 use electric telescopic rods. Since the required lifting equipment is not heavy, generally around 150 kg, the use of existing electric telescopic rods has the characteristics of low cost and high control accuracy.

[0047] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A small-sized lifting and handling device, comprising a lifting vehicle seat (100), wherein the lifting vehicle seat (100) comprises a main seat (110) on one side of which two support plates (130) are rotatably mounted, and a wire take-up unit (150) is mounted on the other side of the main seat (110), characterized in that: A frame plate (120) is connected to one side of the main seat (110), the frame plate (120) is located between the two support plates (130), and a linkage control unit (300) is installed on the frame plate (120); A support portion (400) is rotatably mounted on the main seat (110), the support portion (400) comprising a large arm (410), a sliding seat (460) and a third telescopic member (450) for controlling the lifting of the sliding seat (460), one side of the sliding seat (460) is rotatably connected to a hoisting portion (500), the hoisting portion (500) comprising a telescopic arm and a fourth telescopic member (550) for controlling the extension and retraction of the telescopic arm, one end of the fourth telescopic member (550) being rotatably connected to one side of the top of the large arm (410), and the fourth telescopic member (550) simultaneously providing an oblique pulling force for the telescopic arm; The linkage control unit (300) controls the tilt angles of the upper arm (410) and the telescopic arm, and provides support force at the same time; When the linkage control unit (300) synchronously controls the opening of the two support plates (130), the support radius of the lifting and handling equipment is increased at the same time; Universal wheels (600) are installed at the bottom of the main seat (110), the two support plates (130) and the linkage control unit (300), and support adjustment members (200) are installed at the outer ends of the two support plates (130) and the linkage control unit (300). The support adjustment member (200) is used to position the equipment during hoisting; The main seat (110) is provided with a rotating seat (112), and a plurality of arc-shaped jacks (113) are symmetrically provided on both side plates of the rotating seat (112). The bottom end of the upper arm (410) is rotatably mounted on the rotating seat (112). At the same time, locking holes (470) are symmetrically provided on the front and rear sides of the upper arm (410). The rotation of the upper arm (410) is locked by inserting a pin (114) on the jack (113); A cross-shaped slide groove (420) is provided above the upper arm (410) and passes through the four side surfaces. The bottom of the cross-shaped slide groove (420) is connected to the equipment groove (411) provided therein. The third telescopic member (450) is installed in the equipment groove (411). The top of the third telescopic member (450) is connected to the sliding seat (460). The front and rear surfaces of the sliding seat (460) are slidably installed in the cross-shaped slide groove (420) through symmetrical side sliding wings (461). The right end of the sliding seat (460) is rotatably connected to the telescopic arm. A first inner groove (430) is provided in the left inner groove of the top of the upper arm (410). A first pulley (440) is installed in the first inner groove (430).

2. A small-sized lifting and handling equipment according to claim 1, characterized in that: The telescopic arm includes a hoisting arm (510) and a telescopic arm (540), one end of the hoisting arm (510) is rotatably connected to the right end of the sliding seat (460), and a telescopic slot (520) is provided in the hoisting arm (510) and passes through the other end. The cross section of the telescopic slot (520) is I-shaped, and the telescopic arm (540) cooperates with the telescopic slot (520), and one end of the telescopic arm (540) is slidably installed in the telescopic slot (520). The top left side of the contraction groove (520) is connected to the through groove (530) that passes through the top surface of the lifting arm (510); the top of one end of the telescopic arm (540) is rotatably connected to the fourth telescopic member (550); the other end of the fourth telescopic member (550) passes through the through groove (530) and is rotatably connected to the right side of the top of the arm (410); the top of the other end of the telescopic arm (540) is concavely provided with a second inner groove (541), and a second pulley (542) is installed in the second inner groove (541).

3. A small-sized lifting and handling equipment according to claim 2, characterized in that: The wire rope included in the wire take-up portion (150) is connected to a sling via a first pulley (440) and a second pulley (542).

4. A small-sized lifting and handling equipment according to claim 2, characterized in that: A rotation groove (111) is symmetrically concavely provided on one side of the main seat (110) in the front and rear directions. One end of the support plate (130) is rotatably installed in the rotation groove (111). A plurality of linearly distributed positioning holes (131) are provided on the top of the support plate (130). A bidirectional rotation seat (124) is installed near the top of the outer end of the frame plate (120). Two limiting rods (140) are rotatably installed on the bidirectional rotation seat (124). A latch (141) is inserted into the rotating end of the limiting rod (140). The bottom end of the latch (141) is simultaneously inserted into the positioning hole (131) to rotationally fix the support plate (130).

5. A small-sized lifting and handling equipment according to claim 4, characterized in that: The frame plate (120) is provided with a first sliding groove (121) passing through the right end, the first sliding groove (121) is connected to the side sliding groove (122) front and back, the first sliding groove (121) is connected to the second sliding groove (123) top and bottom, the sliding plate (310) included in the linkage control part (300) is slidably installed on the first sliding groove (121), the right end of the sliding plate (310) extends out of the first sliding groove (121), and the left end of the sliding plate (310) is symmetrically connected to the driving connecting rod (340) in a front-to-back rotational manner, and the other end of the driving connecting rod (340) passes through the side sliding groove (122) and is rotatably connected to the outer side of the support plate (130) on the same side.

6. The small-sized lifting and handling equipment according to claim 5, characterized in that: A first telescopic member (320) and a second telescopic member (330) are rotatably mounted on the top of the left end of the sliding plate (310), the telescopic end of the first telescopic member (320) being rotatably connected to a lower side of the boom (410), and the telescopic end of the second telescopic member (330) being rotatably connected to a lower middle portion of the hoisting boom (510).

7. The small-sized lifting and handling equipment according to claim 6, characterized in that: The outer ends of the two support plates (130) and the right end of the sliding plate (310) are both installed with support adjustment members (200), and the support adjustment member (200) comprises a handle (210), a threaded rod (220), a rotating joint (230) and a support plate (240) connected in sequence. The threaded rod (220) passes through the outer ends of the support plates (130) and the right end of the sliding plate (310), and the threaded rod (220) is rotated by the handle (210) to control the lifting of the support plate (240).

8. The small-sized lifting and handling equipment according to claim 6, characterized in that: The first telescopic member (320), the second telescopic member (330), the third telescopic member (450) and the fourth telescopic member (550) are electrically driven telescopic rods.

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