Liftable carrying vehicle special for cushion blocks

Abstract

The invention relates to a lifting type carrier special for a cushion block. The lifting type carrier mainly comprises the cushion block, a lifting device, a frame, a driving device and a control system. The lifting device is composed of an adjusting device, a lifting mechanism and a hydraulic system, the lifting mechanism can ascend and descend along with stretching of a hydraulic cylinder, design is reasonable, occupied space is small, and the structure is stable and reliable when the cushion blocks are carried. The hydraulic cylinder serves as a lifting power source of the carrying vehicle and can accurately control the lifting height, the driving device adopts four-wheel drive of a Meckoe wheel and has the functions of sufficient power, four-direction translation and in-situ rotation, carrying in a small-space place can be achieved, the position of the cushion block can be finely adjusted through the adjusting device, and the carrying vehicle is simple in design structure, small in occupied space, high in applicability and convenient to use. When the cushion block is carried, the carrier can be effectively and remotely controlled, the manual operation complexity is low, the manual labor force is reduced, and the personnel risk in the carrying process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of handling equipment, and particularly to a special liftable carrier for pads. Background Art

[0002] At present, during the installation and transportation of heavy equipment, as a supporting component, pads play roles such as supporting assembled parts, protecting the ground at the assembly site, and stabilizing components. Usually, multiple pads are required for the installation of heavy equipment, and the positions of the pads should be adjusted in a timely manner during the assembly process to avoid affecting the assembly progress. Pads are usually made of cast iron or concrete, with multiple reinforcing ribs arranged inside, having a structure capable of bearing heavy equipment, and being large in size and weight, thus requiring the assistance of lifting equipment such as overhead cranes for handling. However, the assembly workshop has a small space and a limited number of lifting equipment, making it difficult to meet the heavy demands of assembly and lifting. The existing carriers have a large body and turning radius, and are not suitable for handling pads at the assembly site. Moreover, most of the existing handling equipment adopts a general design, lacking special consideration for the size, shape, and weight of the pads, resulting in problems such as low efficiency, complex operation, and poor stability during the actual handling process.

[0003] With the increasing demand for heavy equipment and the limited number of lifting equipment in the factory area, the handling and placement of pads have become a technical problem that urgently needs to be solved. In order to improve work efficiency, ensure the safe installation of equipment, and reduce the complexity of manual operations, there is an urgent need for a special equipment that can efficiently and stably handle pads, especially to design a suitable handling method for pads of different sizes and weights. Summary of the Invention

[0004] The purpose of the present invention is to provide a special liftable carrier for pads, which can effectively solve problems such as the large body and turning radius of the existing handling equipment and the limited number of lifting equipment in the workshop.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A special liftable carrier for pads, comprising a base with a moving mechanism and a lifting mechanism installed on the base. The base is arranged in a U shape, and the U-shaped space is used to accommodate the pads, so as to hold the pads inside the base. Lower sliding shafts are arranged on the left and right sides of the base. Both ends of a connecting shaft are slidably connected to one sliding shaft respectively. A hydraulic cylinder is installed on the rear side of the base, and the front end of the piston rod of the hydraulic cylinder is hinged to the connecting shaft. The lifting mechanism includes a top frame and a scissor linkage. The top frame includes a front top frame and a rear top frame. Both ends of the front top frame are fixedly connected to upper sliding shafts, and the other ends of the upper sliding shafts are respectively fixedly connected to a rear top frame. The inner ends of the upper sides of the rear top frames are hinged to top frame load-bearing shafts, and the other ends of the top frame load-bearing shafts are slidably fitted in moving grooves formed in the front top frame, jointly forming a U-shaped top frame. The middle parts of the top frame load-bearing shafts are respectively connected with U-shaped lifting arms, which cooperate with the lifting lugs of the cushion blocks. The lower sliding shafts and the upper sliding shafts are connected by a scissor linkage. Both the lower sliding shafts and the upper sliding shafts are slidably connected with sliding shaft sleeves and fixedly connected with fixed shaft sleeves at the ends. The two installation points at the upper and lower ends of the scissor linkage are respectively hinged to the corresponding sliding shaft sleeves and fixed shaft sleeves. The sliding shaft sleeves and the fixed shaft sleeves are located on one side of the connecting shaft.

[0006] Preferably, the fine adjustment device includes a swing hydraulic cylinder and a connecting plate. The left and right ends of the connecting plate are installed on the top frame load-bearing shafts through spherical plain bearings. The swing hydraulic cylinder is hinged to the front top frame through a connecting rod, and the piston rods at both ends of the swing hydraulic cylinder are hinged to the installation plates arranged at the upper ends of the connecting plate.

[0007] Preferably, it further includes a hoisting mechanism, which includes a motor. The motor is installed on the connecting plate and is arranged corresponding to the top frame load-bearing shaft. A rotating shaft gear is arranged on the top frame load-bearing shaft, and a motor gear on the output shaft of the motor meshes with the rotating shaft gear.

[0008] Preferably, the U-shaped structure of the base is larger than the U-shaped structure of the top frame.

[0009] Preferably, the moving mechanism includes a right-angle reduction motor, a wheel shaft, and McCallum wheels. A pair of right-angle reduction motors are symmetrically connected to the left and right sides of the base, respectively located at the front and rear sides of the base. The input shaft and the output shaft of the right-angle reduction motor are cross-connected at a right angle. The McCallum wheels are connected to the output shaft of the right-angle reduction motor through the wheel shaft.

[0010] Preferably, it further includes a control system, which is connected to the base and includes a receiving antenna and a control cabinet. The control cabinet is installed at the front end of the base, and the receiving antenna is installed at the top of the control cabinet for receiving signals. The control cabinet is used to control various motors and hydraulic cylinders on the forklift truck.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention can realize the adjustment of the opening of the lifting tool under the drive of the motor-gear mechanism through the U-shaped lifting arm, thereby increasing the adaptability of the forklift truck. 2. The hydraulic lifting mechanism of the present invention is a telescopic structure. After the lifting mechanism is lowered to the lowest position, it is lower than the height of the cushion block, which is convenient for the forklift truck to enter and exit. It is reasonably designed, occupies a small space, and the structure is stable and reliable when handling the cushion block.

[0012] 3. The mobile device of the present invention is equipped with a stable four-wheel drive system, ensuring good maneuverability and stability during the movement of the forklift truck, and enhancing the safety of the handling process. McNally wheels are selected for the wheels, enabling steering in a relatively small space.

[0013] 4. Through the angle adjustment method of "angle adjustment mechanism + McNally wheel", the posture of the cushion block can be adjusted within a small angle and a large angle range respectively, reducing the operation difficulty, avoiding frequent movement of the forklift truck, and increasing the adjustment accuracy.

[0014] A method for using a special liftable forklift truck for cushion blocks includes the following steps: 1). Initially, the piston rod of the hydraulic cylinder is fully retracted, and the lifting mechanism is in the lowest position. At this time, the height of the vehicle body is lower than the height of the cushion block. Adjust the vehicle body and the lifting mechanism so that the spreader is parallel to the cushion block. The forklift truck moves towards the cushion block until the cushion block is within the U-shaped vacancy of the base. The U-shaped boom rotates clockwise through the motor to adjust the opening of the spreader, and cooperates with the lifting mechanism to hang on the lifting lugs at both ends of the cushion block. 2). When lifting the cushion block, the piston rod of the hydraulic cylinder extends. The sliding shaft sleeve slides on the lower sliding shaft through the thrust of the hydraulic cylinder, and the scissor lifting mechanism rises, driving the cushion block away from the ground. After reaching the required height, the hydraulic cylinder is locked, and the height of the cushion block remains stable during the handling process, completing the lifting operation. 3). After transporting to the predetermined position according to the predetermined placement method of the cushion block, the posture of the cushion block is finely adjusted through the swing hydraulic cylinder. The piston rod of the hydraulic cylinder slowly retracts, and the lifting mechanism slowly descends. After the cushion block touches the ground, the bearing shaft is rotated counterclockwise by the motor, and the U-shaped boom disengages from the lifting lug, and the forklift truck drives away, completing the handling. Brief Description of the Drawings

[0015] Figure 1 It is the front view of the schematic three-dimensional structure diagram of the composition summary of the present invention.

[0016] Figure 2 It is the isometric view of the three-dimensional structure of the present invention from the left and right second angles.

[0017] Figure 3 It is the schematic diagram of a single driving device of the present invention.

[0018] In the figure: 1, spacer block; 2, base; 3, lifting device; 4, driving device; 5, control system; 6, hoisting mechanism; 7, lifting mechanism; 8, hydraulic system; 9, lifting lug; 10, U-shaped lifting arm; 11, top frame load-bearing shaft; 12, rear frame of top frame; 13, fixed bushing; 14, sliding bushing; 15, upper sliding shaft; 16, rotating pin; 17, scissor link shaft; 18, lower sliding shaft; 19, pin A; 20, front frame of top frame; 21, connecting shaft; 22, pin B; 23, piston rod; 24, hydraulic cylinder; 25, receiving antenna; 26, control cabinet; 27, motor; 28, rotating shaft gear; 29, motor gear; 30, oscillating hydraulic cylinder; 31, connecting plate; 32, right-angle reduction motor; 33, wheel axle; 34, McCollum wheel. Detailed implementation manners

[0019] To make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment 1: Please refer to Figures 1-3The present invention provides an embodiment of a special lift-type transport vehicle for cushion blocks, comprising a base 2 with a moving mechanism. The moving mechanism supports the movement of the entire device, ensuring that the fine-adjustment device and the lifting mechanism 7 can be flexibly moved within the required area to transport the cushion blocks 1. The lifting mechanism 7 is installed on the base 2 and is used to adapt to the transport and adjustment of cushion blocks 1 at different heights, thereby transporting cushion blocks 1 at different heights and reducing the complexity of manual operation. The base 2 is U-shaped, and the U-shaped space accommodates the cushion block 1, which is used to accommodate the cushion block 1 in the base 2. The lifting mechanism 7 includes a top frame and a scissor-type linkage. The top frame includes a top frame front frame 20 and a top frame rear frame 12. Both ends of the top frame front frame 20 are fixedly connected to the upper sliding shaft 15. The other end of the upper sliding shaft 15 is fixedly connected to a top frame rear frame 12. The inner end of the top frame rear frame 12 is hinged to the top frame load-bearing shaft 11. The top frame load-bearing shaft 11 supports and bears the weight of the entire cushion block 1. The U-shaped boom 10 is supported by the contact between the lifting ear 9 of the cushion block 1 to ensure structural stability. At the same time, the swing hydraulic cylinder 30 is driven to adjust the position of the cushion block 1 according to the actual situation. The other end of the top frame load-bearing shaft 11 slides and fits on the top frame The movable groove opened on the front frame 20 limits the moving range of the connection on the top frame load-bearing shaft 11, preventing the top frame load-bearing shaft 11 from exceeding the predetermined range of movement when the swing hydraulic cylinder 30 drives the offset, and together constitutes a U-shaped structure top frame. The middle of the top frame load-bearing shaft 11 is respectively connected with a U-shaped lifting arm 10. The U-shaped lifting arm 10 conflicts with the outer circumference of the lifting ear 9 on the cushion block 1, thereby supporting the cushion block 1 for transportation, and cooperating with the lifting ear 9 of the cushion block 1. The lifting ear 9 is cylindrical, and the cylindrical lifting ear 9 is used to connect with the U-shaped lifting arm 10 for lifting work. The fine adjustment device includes a swing hydraulic cylinder 30 and a connecting plate 31. The left and right ends of the connecting plate 31 are mounted on the top frame load-bearing shaft 11 through joint bearings. The joint shaft enables the connecting plate 31 to be fine-tuned and swung around it without affecting the stability of other components, so as to avoid that adjusting a certain part alone will cause other parts to be out of adjustment. The swing hydraulic cylinder 30 is hinged to the top frame 20 through a connecting rod. The swing hydraulic cylinder 30 is mainly used to drive the connection plate 31 to move, and synchronously drive the top frame load-bearing shaft 11 to move, thereby driving the pad 1 connected between the U-shaped boom 10 to deviate and adjust the position of the pad 1. The piston columns at both ends of the swing hydraulic cylinder 30 are hinged to the mounting plate set at the upper end of the connecting plate 31, and the connecting plate 31 is connected to the top frame load-bearing shaft 11. At the same time, it is hinged to the swing hydraulic cylinder 30 through the vertically set mounting plate, and the piston rod of the swing hydraulic cylinder 30 is extended, thereby driving the connecting plate 31 to deviate slightly to the left and right side ends of the pad 1, and synchronously driving the top frame load-bearing shaft 11 to deviate slightly, thereby adjusting the position of the pad 1. It also includes a lifting mechanism 6, which includes a motor 27. The motor 27 is installed on the connecting plate 31 and is arranged corresponding to the top frame load-bearing shaft 11. A rotating shaft gear 28 is arranged on the top frame load-bearing shaft 11. The rotating shaft gear 28 is used to drive the rotation of the top frame load-bearing shaft 11, and at the same time drive the U-shaped lifting arm 10 to rotate, so that the U-shaped lifting arm 10 can lift or place the cushion block 1. The motor gear 29 on the output shaft of the motor 27 meshes with the rotating shaft gear 28. According to the sizes of different transported objects, the opening of the lifting tool can be adjusted by the U-shaped lifting arm 10 rotating around the axis, reducing production costs and operating costs. When starting to lift the cushion block 1, the U-shaped lifting arm 10 is placed horizontally. When the transporter moves to a suitable position, the motor 27 rotates clockwise, synchronously driving the motor gear 29 to rotate, and synchronously driving the rotating shaft gear 28 to rotate. Under the action of the gears, the motor 27 rotates 90° clockwise, and the U-shaped lifting arm 10 is sleeved on the lifting lug 9. When placing the cushion block 1, the motor 27 rotates counterclockwise, and the motor 27 rotates 90° counterclockwise, and the U-shaped lifting arm 10 disengages from the lifting lug 9, realizing automatic lifting. At the same time, according to the sizes of different transported objects, the opening of the lifting tool can be adjusted by the U-shaped lifting arm 10 rotating around the axis, reducing production costs and operating costs. The U-shaped structure of the base 2 is larger than the U-shaped structure of the top frame. The U-shaped structure of the base 2 is larger than the U-shaped structure of the top frame, so that when adjusting the position of the cushion block 1, the cushion block 1 does not touch the base 2. When lifting the cushion block 1, the base 2 moves to move the U-shaped end and the placement space to the position of the cushion block 1. At the same time, through the rotation of the top frame load-bearing shaft 11, the U-shaped lifting arm 10 is abutted and fitted with the lifting lug 9 of the cushion block 1, and after being lifted by the scissor linkage, it is carried. The moving mechanism includes a right-angle reduction motor 32, a wheel shaft 33 and McCallum wheels 34. A pair of right-angle reduction motors 32 are symmetrically connected to the left and right sides of the base 2. The right-angle reduction motor 32 has the function of reducing speed and increasing torque, providing greater torque for the transporter to ensure the driving force, and is convenient to install. They are respectively located at the front and rear sides of the base 2. The input shaft and the output shaft of the right-angle reduction motor 32 are cross-connected at 90°. The McCallum wheels 34 are connected to the output shaft of the right-angle reduction motor 32 through the wheel shaft 33. The moving mechanism drives the transporter to perform four-way translation and in-situ rotation on the ground. The wheels are powered by the right-angle reduction motor 32. At the same time, a signal receiver is connected to the right-angle reduction motor 32, which is used to receive the signal sent by the control cabinet 26 when the receiving antenna 25 receives the signal and transmits it to the control cabinet 26. When the control system 5 receives a moving command, the system will accurately control the rotation direction and speed of each motor according to the characteristics of the McCallum wheels 34, so as to drive the vehicle to perform operations such as forward, backward, leftward, rightward and in-situ rotation. It has a small turning radius. The driving wheels are selected as McCallum wheels 34, which can achieve four-way translation and in-situ rotation, ensuring that the transporter can drive flexibly under different ground conditions. It also includes a control system 5, which is connected to the base 2 and includes a receiving antenna 25 and a control cabinet 26. The control cabinet 26 is installed at the front end of the base 2 for better receiving and transmitting signals. The receiving antenna 25 is installed on the top of the control cabinet 26 for receiving signals. The control cabinet 26 is used to control various motors and hydraulic cylinders on the forklift truck. Lifting and traveling are both realized through remote control, reducing manual labor and avoiding personnel risks during the handling process.

[0024] Embodiment 2: Please refer to Figures 1-2 , on the basis of Embodiment 1, it also has the following structure: Lower sliding shafts 18 are arranged on both left and right sides of the base 2. Both ends of a connecting shaft 21 are slidably connected to a sliding shaft 18 respectively. A hydraulic cylinder 24 is installed on the rear side of the base 2. The rodless cavity of the hydraulic cylinder 24 is connected to the connecting shaft 21 through a pin B22. The front end of the piston rod 23 of the hydraulic cylinder 24 is hinged to the connecting shaft 21. A signal receiver is also arranged on the hydraulic cylinder 24 for receiving signals sent by the control cabinet 26. When lifting the cushion block 1, the hydraulic cylinder 24 extends. The connecting shaft 21 is displaced by the thrust of the hydraulic cylinder 24, synchronously driving the sliding shaft sleeve 14 to slide on the lower sliding shaft 18, and the scissor linkage rises, and the cushion block 1 leaves the ground. The lifting height is controlled by the hydraulic cylinder 24. After reaching the required height, the hydraulic cylinder 24 locks to complete the lifting. After the cushion block 1 is transported to the predetermined position, the piston rod 23 of the hydraulic cylinder 24 slowly retracts, and the scissor linkage slowly descends. After the cushion block 1 touches the ground, the U-shaped lifting arm 10 disengages, and the forklift truck drives away to complete the handling. When not working, it occupies little space. When handling the cushion block 1, the structure is stable and the handling is smooth. At the same time, after the lifting mechanism 7 is lowered to the lowest position, the height of the forklift truck is lower than that of the cushion block 1, and the forklift truck can freely enter and exit. When lifting and placing the cushion block 1, only a very small stroke of the hydraulic cylinder 24 needs to be pushed, greatly reducing the handling time and power, achieving the effect of low energy and high efficiency. The lower sliding shaft 18 and the upper sliding shaft 15 are connected through a scissor linkage. Sliding shaft sleeves 14 are slidably connected to both the lower sliding shaft 18 and the upper sliding shaft 15, and fixed shaft sleeves 13 are fixedly connected to the ends. The two installation points at the upper and lower ends of the scissor linkage are respectively hinged to the corresponding sliding shaft sleeves 14 and fixed shaft sleeves 13. The sliding shaft sleeves 14 and the fixed shaft sleeves 13 are located on one side of the connecting shaft 21. The scissor linkage is composed of inner scissors and outer scissors, which are a pair of spaced support frames. The outer scissors are located outside the inner scissors. The corresponding support rods between the inner scissors and the outer scissors are hinged in the middle through a rotating pin 16. The bottom ends of the outer scissors are respectively hinged to the fixed shaft sleeves 13 of the lower sliding shaft 18, and the top ends are respectively hinged to the sliding shaft sleeves 14 of the upper sliding shaft 15. The bottom ends of the inner scissors are respectively hinged to the sliding shaft sleeves 14 of the lower sliding shaft 18, and the top ends are respectively hinged to the fixed shaft sleeves 13 of the upper sliding shaft 15. The hinged joints between the inner scissors, the outer scissors and the sliding shaft sleeves 14 and the fixed shaft sleeves 13 are connected through pins A19.

[0025] Specific usage steps: 1). Initially, the piston rod 23 of the hydraulic cylinder 24 is fully retracted, and the lifting mechanism 7 is in the lowest position. At this time, the height of the vehicle body is lower than the height of the cushion block 1. Adjust the vehicle body and the lifting mechanism 6 to make the spreader parallel to the cushion block 1. The transporter moves towards the cushion block 1 until the cushion block 1 is placed within the U-shaped vacancy of the base 2. The U-shaped boom 10 rotates clockwise through the motor 27 to adjust the opening of the spreader, and cooperates with the lifting mechanism 7 to hook onto the lifting lugs 9 at both ends of the cushion block 1; 2). When lifting the cushion block 1, the piston rod 23 of the hydraulic cylinder 24 extends. Through the thrust of the hydraulic cylinder 24, the sliding bushing 14 slides on the lower sliding shaft 18, and the scissor lifting mechanism 7 rises, driving the cushion block 1 away from the ground. After reaching the required height, the hydraulic cylinder 24 is locked, and the height of the cushion block 1 remains stable during the transportation process, completing the lifting operation; 3). After transporting to the predetermined position according to the predetermined placement method of the cushion block 1, the attitude of the cushion block 1 is finely adjusted through the swing hydraulic cylinder 30. The piston rod 23 of the hydraulic cylinder 24 slowly retracts, and the lifting mechanism 7 slowly descends. After the cushion block 1 touches the ground, the motor 27 rotates the load-bearing shaft counterclockwise, and the U-shaped boom 10 disengages from the lifting lug 9, and the transporter drives away, completing the transportation.

[0026] The above are only the embodiments of the present invention. Specific structures and common knowledge such as characteristics well known in the art are not described in detail herein. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A special lift-type transport vehicle for cushion blocks, characterized by: It includes a base (2) with a moving mechanism, and a lifting mechanism (7) installed on the base (2). The base (2) is arranged in a U shape. The U-shaped vacancy accommodates a cushion block for accommodating the cushion block into the base (2). Lower sliding shafts (18) are arranged on the left and right side edges of the base (2). Both ends of a connecting shaft (21) are slidably connected to a sliding shaft (18). A hydraulic cylinder (24) is installed on the rear side edge of the base (2). The front end of the piston rod (23) of the hydraulic cylinder (24) is hinged to the connecting shaft (21). The lifting mechanism (7) includes a top frame and a scissor linkage. The top frame includes a front top frame (20) and a rear top frame (12). Both ends of the front top frame (20) are fixedly connected to upper sliding shafts (15). The other ends of the upper sliding shafts (15) are respectively fixedly connected to a rear top frame (12). The inner ends of the rear top frame (12) are hinged to a top frame bearing shaft (11). The other end of the top frame bearing shaft (11) is slidably fitted in a moving groove formed on the front top frame (20), jointly forming a U-shaped top frame. The middle parts of the top frame bearing shafts (11) are respectively connected with U-shaped lifting arms (10), which cooperate with the lifting lugs of the cushion block (1). The lower sliding shafts (18) and the upper sliding shafts (15) are connected by a scissor linkage. Sliding shaft sleeves (14) are slidably connected to both the lower sliding shafts (18) and the upper sliding shafts (15), and fixed shaft sleeves (13) are fixedly connected to the ends. The two installation points at the upper and lower ends of the scissor linkage are respectively hinged to the corresponding sliding shaft sleeves (14) and fixed shaft sleeves (13). The sliding shaft sleeves (14) and the fixed shaft sleeves (13) are located on one side of the connecting shaft (21).

2. The liftable special pallet truck for cushion blocks according to claim 1, characterized in that: The fine adjustment device includes a swing hydraulic cylinder (30) and a connecting plate (31). The left and right ends of the connecting plate (31) are installed on the top frame bearing shaft (11) through spherical plain bearings. The swing hydraulic cylinder (30) is hinged to the front top frame (20) through a connecting rod. The piston columns at both ends of the swing hydraulic cylinder (30) are hinged to the mounting plates arranged at the upper ends of the connecting plate (31).

3. The liftable handling cart dedicated to cushion blocks according to claim 1, wherein: It also includes a hoisting mechanism (6), which includes a motor (27). The motor (27) is installed on the connecting plate (31), corresponding to the top frame bearing shaft (11). A rotating shaft gear (28) is arranged on the top frame bearing shaft (11). The motor gear (29) on the output shaft of the motor (27) meshes with the rotating shaft gear (28).

4. The liftable handling cart dedicated to the spacer block according to claim 1, wherein: The U-shaped structure of the base (2) is larger than the U-shaped structure of the top frame.

5. The liftable transporter dedicated to the spacer block according to claim 1, wherein: The moving mechanism includes a right-angle reduction motor (32), a wheel shaft (33), and McCallum wheels (34). A pair of right-angle reduction motors (32) are symmetrically connected to the left and right side ends of the base (2), respectively located at the front and rear side ends of the base (2). The input shaft and the output shaft of the right-angle reduction motor (32) are cross-connected at 90°. The McCallum wheels (34) are connected to the output shaft of the right-angle reduction motor (32) through the wheel shaft (33).

6. The liftable handling truck dedicated to the spacer block according to claim 1, wherein: It further includes a control system (5) connected to the base (2), which includes a receiving antenna (25) and a control cabinet (26). The control cabinet (26) is installed at the front end of the base (2), and the receiving antenna (25) is installed at the top of the control cabinet (26) for receiving signals. The control cabinet (26) is used to control various motors and hydraulic cylinders on the forklift truck.

7. The method for using the special liftable forklift truck for pads according to claim 1 includes the following steps. 1) Initially, the piston rod (23) of the hydraulic cylinder (24) is fully retracted, and the lifting mechanism (7) is in the lowest position. At this time, the height of the vehicle body is lower than the height of the pad (1). Adjust the vehicle body and the lifting mechanism (6) so that the spreader is parallel to the pad 1. The forklift truck moves towards the pad (1) until the pad (1) is within the U-shaped vacancy of the base (2). The U-shaped boom (10) adjusts the opening of the spreader by rotating the motor (27) clockwise, and cooperates with the lifting mechanism (7) to hang on the lifting lugs (9) at both ends of the pad (1). 2) When lifting the pad (1), the piston rod (23) of the hydraulic cylinder (24) extends. The sliding shaft sleeve (14) slides on the lower sliding shaft (18) by the thrust of the hydraulic cylinder (24), and the scissor lifting mechanism (7) rises, driving the pad (1) off the ground. After reaching the required height, the hydraulic cylinder (24) is locked, and the height of the pad (1) remains stable during the handling process, completing the lifting operation. 3) After transporting the pad (1) to the predetermined position according to the predetermined placement method of the pad (1), the attitude of the pad (1) is finely adjusted by the swing hydraulic cylinder (30). The piston rod (23) of the hydraulic cylinder (24) slowly retracts, and the lifting mechanism (7) slowly descends. After the pad (1) touches the ground, the motor (27) rotates the load-bearing shaft counterclockwise, and the U-shaped boom (10) disengages from the lifting lug (9), and the forklift truck drives away, completing the handling.

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