Quick loading and unloading shovel plate type carrier

Abstract

The invention discloses a quick loading and unloading shovel plate type carrier, and relates to the technical field of carriers, the shovel plate type carrier comprises a tractor, an offset mechanism and a dragging mechanism, the tractor is connected with an operation headstock, a power frame is installed on the operation headstock, the output end of the power frame is connected with a fixed shovel plate, and a movable shovel plate is installed on the fixed shovel plate in a sliding mode; the driving end of the movable shovel plate is in transmission connection with a movable driving part; the deviation mechanism comprises a frustum block and a discharging assembly, a containing groove used for containing the frustum block is formed in the movable shovel plate, and the discharging assembly is used for placing the frustum block below the movable shovel plate. When the frustum block is transferred to the position below the movable shovel plate, the surface of the highest end of the frustum block abuts against the lower end face of the movable shovel plate in a friction mode. The dragging mechanism is arranged at the front end of the operation vehicle head and used for dragging equipment to be loaded and unloaded to the movable shovel plate. According to the shovel plate type carrying vehicle, the carrying area is increased by means of outward extension of the movable shovel plate, and auxiliary supporting of the movable shovel plate is achieved by means of the frustum block.

Description

Technical Field

[0001] This invention belongs to the field of pallet truck technology, and specifically relates to a fast loading and unloading pallet truck. Background Technology

[0002] In modern large-scale coal mines, various support equipment is used at longwall working faces, such as shield supports and back supports. Once one working face is completed, it needs to be moved to a new working face, and moving these heavy pieces of equipment is extremely difficult. Large transport vehicles are required for this purpose; shovel loader is a common type of specialized vehicle used for transporting large coal mine equipment and belongs to the category of mining machinery.

[0003] For the handling of extra-long equipment, two forklifts are currently required to work in tandem. Existing shovel-type transporters have shovels of fixed length. When handling longer equipment, the length of the shovel is shorter than the bottom of the equipment, causing the bottom of the equipment to be suspended in the air. When the road surface inside the mine is uneven, the shovel-type transporter will cause bumps and incomplete contact between the bottom of the equipment and the equipment, which can easily lead to the equipment shifting or even falling off. Moreover, the space inside the mine is small, making it extremely difficult to reload the equipment, thus affecting the efficiency of equipment handling. Summary of the Invention

[0004] The purpose of this invention is to provide a simple and reasonably designed fast loading and unloading pallet truck in order to solve the above problems.

[0005] The present invention achieves the above objectives through the following technical solutions: A rapid loading and unloading shovel-type transport vehicle includes a tractor and a working head, wherein the tractor is connected to the working head, and the shovel-type transport vehicle further includes: A power frame is mounted on the head of the work vehicle. A fixed shovel is connected to the output end of the power frame. A movable shovel is slidably mounted on the fixed shovel. A movable drive component is connected to the drive end of the movable shovel. The offset mechanism includes a frustum block and a material dropping assembly. A placement slot is provided on the movable shovel for placing the frustum block. The material dropping assembly is located below the movable shovel and is used to transfer the frustum block from the placement slot to below the movable shovel. When the frustum block is in the placement slot, the small diameter end of the frustum block is located on the side away from the moving axis of the moving shovel plate from the large diameter end of the frustum block; when the frustum block is moved under the moving shovel plate, the highest end surface of the frustum block in the side-lying state rubs against the lower end surface of the moving shovel plate. A towing mechanism is installed at the front end of the work vehicle head and is used to tow the equipment to be loaded or unloaded onto the mobile shovel.

[0006] As a further optimization of the present invention, the lower end of the movable shovel is fixedly connected to a sliding rail, and the fixed shovel is provided with a first sliding groove, and the sliding rail is slidably connected to the fixed shovel through the first sliding groove.

[0007] As a further optimization of the present invention, the material feeding assembly includes a pallet and a material feeding drive. The output end of the material feeding drive is connected to the pallet. The pallet is slidably disposed at the lower end of the movable shovel, and a material feeding port is provided on the pallet. The material feeding port is correspondingly disposed with the placement groove. When the pallet is in the initial position, the material feeding port and the placement groove are misaligned, and the truncated cone is located above the pallet. When the pallet is in the material feeding position, the material feeding port and the placement groove are directly opposite each other, and the truncated cone falls through the material feeding port to the position below the movable shovel.

[0008] As a further optimization of the present invention, the offset mechanisms, which are arranged in pairs, are symmetrically arranged on both sides of the moving axis of the moving shovel along the moving direction of the moving shovel.

[0009] As a further optimization of the present invention, a baffle is provided at the lower front of the movable shovel, and the lower end surface of the baffle is flush with the lower end surface of the fixed shovel.

[0010] As a further optimization of the present invention, an expansion mechanism is provided below the movable shovel plate, and the expansion mechanism is located on the side of the truncated cone block away from the moving axis of the movable shovel plate. The expansion mechanism is used to provide auxiliary support for the movable shovel plate.

[0011] As a further optimization of the present invention, the expansion mechanism includes a support base, a first spring, a slider, a locking block, and an abutment block. Multiple support bases are provided, and the multiple support bases are arranged sequentially along the moving direction of the moving shovel plate. The support base is installed below the moving shovel plate. A first spring is installed in the inner cavity of the support base. A slider is fixedly connected to the lower end of the first spring. The slider is slidably connected in the inner cavity of the support base. A main shaft is fixedly connected to the lower end of the slider. An abutment block is fixedly connected to the lower end of the main shaft. A locking block is sleeved on the main shaft. A torsion spring is provided at the sleeve joint between the locking block and the main shaft. The card block has a cam part, the lower edge of the end of the abutment block facing the fixed shovel plate has a slope, the fixed shovel plate has a storage groove, the outlet side of the storage groove is symmetrically provided with limit blocks, and the lower edge of the outlet of the storage groove is provided with an arc protrusion. When the support base is outside the storage slot and the locking block does not abut against the limiting block, the cam part of the locking block rotates to the lower edge of the support base, and the lower end of the abutting block rubs against the ground.

[0012] As a further optimization of the present invention, an upper slide rail is fixedly provided at the upper end of the support base, and a second slide groove is provided at the lower end of the movable shovel plate. The upper slide rail is slidably connected to the movable shovel plate through the second slide groove. A misalignment block is provided at the side end of the support base. Along the moving direction of the movable shovel plate, the misalignment blocks of adjacent support bases are arranged facing each other, and the misalignment blocks arranged facing each other are fixedly connected by a second spring. Among the plurality of support bases, the support bases located at the first and last positions are fixedly installed on the movable shovel plate.

[0013] As a further optimization of the present invention, the towing mechanism includes a hook, a mounting frame, a turntable, a chain, and a winding drive. The output end of the winding drive is connected to the movable end of the chain. The fixed end of the chain is fixedly mounted on the work vehicle head. The chain surrounds the turntable and rubs against the groove of the turntable. The turntable is rotatably mounted on a rotating shaft. The rotating shaft is fixedly mounted on the mounting frame. The outer end of the mounting frame is rotatably connected to a hook.

[0014] As a further optimization of the present invention, the groove includes a first groove and a second groove, which are alternately distributed. The chain includes multiple interlocking links, and the first groove and the second groove are respectively adapted to the interlocking state of the links.

[0015] The present invention has at least the following beneficial effects: The present invention provides a fast loading and unloading shovel-type transport vehicle, including a tractor, an offset mechanism and a towing mechanism. The tractor is connected to a working head, a power frame is installed on the working head, and a fixed shovel is connected to the output end of the power frame. A movable shovel is slidably installed on the fixed shovel. By placing a frustum block in the placement slot of the movable shovel, the length of the transport platform for the equipment is extended by the forward-moving movable shovel. Furthermore, a frustum block is placed below the movable shovel. By utilizing the deflection characteristics of the frustum block, the frustum block is deflected in a direction away from the moving axis of the movable shovel, thereby expanding the support range of the movable shovel and ensuring the support stability of the movable shovel when the towing mechanism tows the equipment onto the movable shovel. Furthermore, an expansion mechanism is installed below the mobile shovel. With the cooperation of multiple support seats and corresponding abutment blocks in the expansion mechanism, when the mobile shovel extends to the end position, the multiple abutment blocks rub against the ground, further expanding the auxiliary support range for the mobile shovel. This prevents the extended mobile shovel from being suspended at the bottom and from being deformed or damaged by the inertial impact generated when the equipment is dragged up. At the same time, the deflected frustum block squeezes the adjacent support seat, causing the squeezed support seat to slide away from the frustum block. Under the mutual constraint of the second spring between adjacent support seats, multiple support seats are staggered and slide. The arrangement trajectory of multiple support seats is curved. The curved distribution of each support seat automatically adapts to the unevenness of the ground. Compared with the problem of local suspension that is easy to occur in a straight line arrangement, the curved arrangement allows more support seats to effectively contact the ground, avoids support failure, and enhances overall stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is the invention Figure 1 A partial sectional view of the side of the moving shovel and the fixed shovel. Figure 3 This is a schematic diagram of the structure of the pallet and the material feeding drive component of the present invention; Figure 4 This is a schematic diagram of the structure of the movable shovel and pallet of the present invention in their initial positions; Figure 5 This is a schematic diagram of the structure of the movable shovel and pallet of the present invention when they are in the material dropping position; Figure 6 This is a schematic diagram of the structure of the movable shovel, pallet, and frustum block of the present invention when they are in the termination position. Figure 7 This is a partial cross-sectional view of the movable shovel, fixed shovel, and outward expansion mechanism of the present invention. Figure 8 This is the present invention. Figure 7 Enlarged view of point A in the middle; Figure 9 This is a partial structural schematic diagram of the expansion mechanism of the present invention; Figure 10 This is a partial cross-sectional view of the expansion mechanism of the present invention; Figure 11 This is a top view of the frustum block and the expansion mechanism of the present invention. Figure 12 This is a partial structural schematic diagram of the dragging mechanism of the present invention.

[0017] In the diagram: 1. Tractor; 2. Work vehicle head; 21. Power frame; 3. Fixed shovel; 31. Storage trough; 4. Moving shovel; 41. Moving drive component; 42. Lower slide rail; 5. Dragging mechanism; 51. Hook; 52. Mounting bracket; 53. Chain; 54. Turntable; 541. First groove; 542. Second groove; 55. Shaft; 6. Offset mechanism; 61. Placement slot; 62. Frustum block; 63. Support plate; 64. Discharge port; 65. Discharge drive component; 7. Outward expansion mechanism; 71. Abutment block; 72. Locking block; 73. Slider; 74. Support base; 75. First spring; 76. Upper slide rail; 77. Limiting block; 78. Second spring; 8. Baffle. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] like Figure 1 , Figure 2 As shown, the present invention provides a rapid loading and unloading shovel-type transport vehicle, including a tractor 1 and a working head 2, wherein the tractor 1 is connected to the working head 2, and the shovel-type transport vehicle further includes: A power frame 21 is mounted on the working head 2. A fixed shovel 3 is connected to the output end of the power frame 21. A movable shovel 4 is slidably mounted on the fixed shovel 3. A movable drive component 41 is connected to the drive end of the movable shovel 4. Under the drive of the movable drive component 41, the movable shovel 4 can extend forward to extend the overall length of the shovel. For example, the movable drive component 41 is a hydraulic telescopic cylinder, an electric telescopic cylinder, or an electric telescopic cylinder. No limitation is made here. The offset mechanism 6 includes a frustum block 62 and a material dropping assembly. The movable shovel plate 4 has a placement groove 61 for placing the frustum block 62. The material dropping assembly is located below the movable shovel plate 4 and is used to transfer the frustum block 62 from the placement groove 61 to below the movable shovel plate 4. When the frustum block 62 is located in the placement groove 61, the small diameter end of the frustum block 62 is located on the side away from the moving axis of the moving shovel plate 4 from the large diameter end of the frustum block 62; when the frustum block 62 is moved to the underside of the moving shovel plate 4, the highest end surface of the frustum block 62 in the side-lying state rubs against the lower end surface of the moving shovel plate 4. The towing mechanism 5 is located at the front end of the work vehicle head 2 and is used to tow the equipment to be loaded or unloaded onto the mobile shovel 4.

[0020] It should be noted that the frustum block 62 has a large-diameter end and a small-diameter end, so that... Figure 2As shown in the example, the small-diameter end of the frustum block 62 is located on the side away from the moving axis of the moving shovel plate 4 from the large-diameter end of the frustum block 62. When the frustum block 62 is transferred to the underside of the moving shovel plate 4, as the moving shovel plate 4 continues to extend forward, the moving shovel plate 4 rubs and squeezes the frustum block 62. Due to the characteristics of the frustum block 62's own structure, the side-lying frustum block 62 deflects, thereby causing the support position of the frustum block 62 on the moving shovel plate 4 to move away from the moving axis of the moving shovel plate 4. This expands the support range of the moving shovel plate 4 while providing auxiliary support to the moving shovel plate 4. After the towing mechanism 5 drags the equipment onto the moving shovel plate 4, the equipment is lifted with the help of the power frame 21. At this time, the frustum block 62 completely separates from the moving shovel plate 4, thereby reducing the shovel end of the transport vehicle. The length of the extended moving shovel plate 4 and the fixed shovel plate 3 greatly extends the supporting area for the equipment, ensuring the transport stability of the equipment.

[0021] It should be noted that after the equipment is lifted, the frustum block 62 will be stored in the truck bed and can be carried with the vehicle for easy transport in the next operation.

[0022] For example, see [link to relevant documentation]. Figure 12 The towing mechanism 5 includes a hook 51, a mounting frame 52, a turntable 54, a chain 53, and a winding drive. The output end of the winding drive is connected to the movable end of the chain 53. The fixed end of the chain 53 is fixedly mounted on the work vehicle head 2. The chain 53 surrounds the turntable 54 and rubs against the groove of the turntable 54. The turntable 54 is rotatably mounted on a rotating shaft 55, which is fixedly mounted on the mounting frame 52. The outer end of the mounting frame 52 is rotatably connected to the hook 51. The chain 53 is hooked onto the appropriate position on the equipment via the hook 51, and driven by the winding drive, the chain 53 winds up, dragging the equipment onto the mobile shovel 4.

[0023] The groove includes a first groove 541 and a second groove 542, which are alternately distributed. The chain 53 includes multiple interlocking links. The first groove 541 and the second groove 542 are adapted to the interlocking state of the links, so that the chain 53 can be released in an orderly manner when pulled outward and can be rolled up in an orderly manner when dragged, preventing the chain 53 from getting knotted.

[0024] For example, see [link to relevant documentation]. Figure 2 The lower end of the movable shovel plate 4 is fixedly connected to a sliding rail 42. The fixed shovel plate 3 has a first sliding groove. The sliding rail 42 is slidably connected to the fixed shovel plate 3 through the first sliding groove to ensure that the movable shovel plate 4 slides outward smoothly along the fixed shovel plate 3.

[0025] For example, see [link to relevant documentation]. Figure 2 and Figure 3The material feeding assembly includes a pallet 63 and a material feeding drive 65. The output end of the material feeding drive 65 is connected to the pallet 63. The pallet 63 is slidably disposed at the lower end of the movable shovel 4, and a material feeding port 64 is provided on the pallet 63. The material feeding port 64 is correspondingly disposed with the placement groove 61. When the pallet 63 is in the initial position, such as... Figure 4 As shown, the dashed line indicates the structural position of the support plate 63 at the lower end of the movable shovel 4. The material discharge port 64 is offset from the placement groove 61, and the frustum block 62 is located above the support plate 63. When the support plate 63 is in the material discharge position, the movable shovel 4 has already moved forward a certain distance, which is sufficient for the frustum block 62 to fall into the position below the movable shovel 4. Figure 5 As shown, the material discharge port 64 is directly opposite the placement groove 61. The support function of the pallet 63 on the frustum block 62 is released, and the frustum block 62 falls through the material discharge port 64 to a position below the moving shovel plate 4. Subsequently, as the moving shovel plate 4 continues to move forward, as... Figure 6 As shown, at this time, the lower end face of the pallet 63 and the lower end face of the moving shovel 4 rub and squeeze the frustum block 62, causing the frustum block 62 to deflect.

[0026] In the above embodiments, please continue to refer to Figure 1 , Figure 2 and Figure 4 Along the moving direction of the moving shovel plate 4, the offset mechanisms 6, which are arranged in pairs, are symmetrically arranged on both sides of the moving axis of the moving shovel plate 4 to ensure the auxiliary support balance of the moving shovel plate 4.

[0027] Among them, such as Figure 7 As shown, a baffle 8 is provided at the lower front of the movable shovel 4. The lower end surface of the baffle 8 is flush with the lower end surface of the fixed shovel 3, so that the front end of the movable shovel 4 is supported by the baffle 8. When the baffle 8 moves forward with the movable shovel 4, the baffle 8 pushes away the obstacles in front of the movable shovel 4, ensuring smooth deflection of the rear cone block 62.

[0028] In another embodiment, see below. Figure 7 Below the movable shovel plate 4, there is also an expansion mechanism 7, and the expansion mechanism 7 is located on the side of the frustum block 62 away from the moving axis of the movable shovel plate 4. The expansion mechanism 7 is used to provide auxiliary support for the movable shovel plate 4, so as to further expand the support range of the movable shovel plate 4.

[0029] For example, see [link to relevant documentation]. Figure 8 , Figure 9 and Figure 10The expansion mechanism 7 includes a support base 74, a first spring 75, a slider 73, a locking block 72, and an abutment block 71. Multiple support bases 74 are provided, and the multiple support bases 74 are arranged sequentially along the moving direction of the moving shovel plate 4. The support base 74 is installed below the moving shovel plate 4. The first spring 75 is installed in the inner cavity of the support base 74. The lower end of the first spring 75 is fixedly connected to the slider 73. The slider 73 is slidably connected in the inner cavity of the support base 74. The lower end of the slider 73 is fixedly connected to the main shaft. The lower end of the main shaft is fixedly connected to the abutment block 71. The locking block 72 is sleeved on the main shaft. A torsion spring is provided at the sleeve joint between the locking block 72 and the main shaft. The card block 72 has a cam part, the abutting block 71 has a slope at the lower edge of the end facing the fixed shovel plate 3, the fixed shovel plate 3 has a storage groove 31, the outlet side of the storage groove 31 is symmetrically provided with limit blocks 77, and the lower edge of the outlet of the storage groove 31 is provided with an arc protrusion. When the support base 74 is outside the storage groove 31 and the locking block 72 does not abut against the limiting block 77, the cam part of the locking block 72 rotates to the lower edge of the support base 74, and the lower end of the abutting block 71 rubs against the ground.

[0030] In the above embodiment, when the movable shovel 4 is in its initial position, the support base 74 is located in the receiving groove 31. After the movable shovel 4 extends forward, the support base 74 slides out of the receiving groove 31 along with the movable shovel 4. At this time, as Figure 8 As shown, under the elastic force of the first spring 75, the slider 73 slides down, causing the locking block 72 and the abutment block 71 to move outside the support seat 74, and the locking block 72 deflects under the action of the torsion spring, as shown. Figure 9 As shown, the cam portion of the locking block 72 is positioned at the lower edge of the support base 74. Thus, after the abutting block 71 abuts against the ground, the abutting block 71 transmits the supporting force to the support base 74 through the locking block 72. The auxiliary support of the moving shovel plate 4 by the multiple abutting blocks 71 on both sides further increases the support range of the moving shovel plate 4, preventing the extended moving shovel plate 4 from being deformed and damaged due to the inertial impact generated when the equipment is dragged up because the lower part is suspended. After the transport is completed, when storing the movable shovel plate 4, the limiting block 77 first presses the cam part of the locking block 72, causing the cam part of the locking block 72 to exit the lower edge position of the support seat 74. Then, under the abutting action of the arc protrusion against the abutting block 71, the abutting block 71 drives the locking block 72 to move upward into the inner cavity of the support seat 74, compressing the first spring 75, thereby realizing the storage of the support seat 74.

[0031] For example, see [link to relevant documentation]. Figure 8 , Figure 9 and Figure 11The upper end of the support base 74 is fixedly provided with an upper slide rail 76, and the lower end of the movable shovel plate 4 is provided with a second slide groove. The upper slide rail 76 is slidably connected to the movable shovel plate 4 through the second slide groove. The side end of the support base 74 is provided with a misalignment block. Along the moving direction of the movable shovel plate 4, the misalignment blocks of adjacent support bases 74 are arranged facing each other, and the misalignment blocks arranged facing each other are fixedly connected by a second spring 78. Among the multiple support bases 74, the support bases 74 located at the beginning and end are fixedly installed on the movable shovel plate 4.

[0032] Under the deflection of the frustum block 62, as Figure 11 As shown, the deflected frustum block 62 will laterally push the adjacent support seat 74, causing the pushed support seat 74 to slide away from the frustum block 62. Under the mutual constraint of the second spring 78 between adjacent support seats 74, the multiple support seats 74 can slide out of alignment. It should be noted that because the abutment block 71 rubs against the ground, the deformation of the second spring 78 between the support seats 74 is different, resulting in a curved distribution of the multiple support seats 74. Compared with a straight distribution, when the abutment block 71 rubs against the ground, the curved distribution of each support seat 74 automatically adapts to the unevenness of the ground. Compared with the problem of local suspension that is easy to occur in a straight arrangement, the curved arrangement allows more support seats 74 to effectively contact the ground, avoids support failure, and enhances overall stability.

[0033] It should be noted that when using this quick loading and unloading shovel-type transport vehicle, the tractor 1 drives to the side of the equipment to be transported, so that the movable shovel 4 faces one end of the equipment. Under the drive of the movable drive unit 41, the movable shovel 4 moves forward. After moving forward a certain distance, the material dropping drive unit 65 drives the pallet 63 to move backward, so that the material dropping port 64 is directly opposite the placement groove 61, thereby causing the truncated cone block 62 to fall under the movable shovel 4. As the movable shovel 4 continues to move forward, the truncated cone block 62 is subjected to friction and compression by the movable shovel 4 and the pallet 63, causing the truncated cone block 62 to deflect, thereby expanding the auxiliary support range for the movable shovel 4. Moreover, when the movable shovel plate 4 moves forward, the abutment block 71 inside the support base 74 pops out and rubs against the ground, and the locking block 72 locks the support base 74. The cooperation of multiple support bases 74 and abutment blocks 71 provides auxiliary support for the movable shovel plate 4. Meanwhile, under the deflection of the frustum block 62, the deflected frustum block 62 will laterally push the adjacent support seat 74, causing the pushed support seat 74 to slide away from the frustum block 62. Under the mutual constraint of the second spring 78 between adjacent support seats 74, the staggered sliding of multiple support seats 74 is realized. The arrangement trajectory of multiple support seats 74 is a curved distribution. The curved distribution of each support seat 74 automatically adapts to the unevenness of the ground. Compared with the problem of local suspension that is easy to occur in a straight arrangement, the curved arrangement allows more support seats 74 to effectively contact the ground, avoids support failure, and enhances overall stability. Next, the chain 53 is released outward by the rewinding drive, and the chain 53 is pulled outward so that the hook 51 is attached to the appropriate position of the equipment. The rewinding drive is reversed to retract the chain 53 inward and drag the equipment onto the mobile shovel plate 4. With the multi-point support of the frustum block 62 and the abutment block 71, the mobile shovel plate 4 is stabilized. It should be noted that when large equipment needs to be moved from both ends, after the equipment is dragged onto the movable shovel 4 of a transport vehicle, the fixed shovel 3 and the movable shovel 4 are moved upward under the drive of the power frame 21, lifting one end of the equipment. When another transport vehicle is dragging the equipment, the transport vehicle moves towards the other transport vehicle in sync. Finally, transport vehicles are set up at the front and rear ends of the equipment respectively for coordinated transport.

[0034] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A quick detachable blade type carrier vehicle comprising a tractor (1) and a work carrier head (2), said tractor (1) is connected with the work carrier head (2), characterized in that, The shovel plate carrier further comprises: A power frame (21) is mounted on the work truck head (2), and the output end of the power frame (21) is connected with a fixed shovel plate (3), the fixed shovel plate (3) is slidably connected with a movable shovel plate (4), and the driving end of the movable shovel plate (4) is drivingly connected with a moving driving member (41); An offset mechanism (6) comprises a conical block (62) and a blanking assembly, a placing groove (61) is formed in the movable shovel plate (4) and used for placing the conical block (62), and the blanking assembly is arranged below the movable shovel plate (4) and used for transferring the conical block (62) from the placing groove (61) to the position below the movable shovel plate (4); When the conical block (62) is located in the placing groove (61), the small-diameter end of the conical block (62) is located on the side away from the moving axis of the movable shovel plate (4) relative to the large-diameter end of the conical block (62); when the conical block (62) is transferred to the position below the movable shovel plate (4), the highest end surface of the conical block (62) in the lateral lying state is in frictional abutment with the lower end surface of the movable shovel plate (4); A dragging mechanism (5) is arranged at the front end of the work truck head (2) and used for dragging the equipment to be loaded or unloaded onto the movable shovel plate (4).

2. A quick attach / detach pallet truck according to claim 1, characterized in that The lower end of the movable shovel plate (4) is fixedly connected with a lower sliding rail (42), a first sliding groove is formed in the fixed shovel plate (3), and the lower sliding rail (42) is slidably connected with the fixed shovel plate (3) through the first sliding groove.

3. A quick attach / detach pallet truck according to claim 1, characterized in that, The blanking assembly comprises a supporting plate (63) and a blanking driving member (65), the output end of the blanking driving member (65) is drivingly connected with the supporting plate (63), the supporting plate (63) is slidably arranged at the lower end of the movable shovel plate (4), a blanking opening (64) is formed in the supporting plate (63), and the blanking opening (64) is arranged in correspondence with the placing groove (61); when the supporting plate (63) is located at an initial position, the blanking opening (64) is arranged in dislocation with the placing groove (61), and the conical block (62) is located above the supporting plate (63); when the supporting plate (63) is located at a blanking position, the blanking opening (64) is arranged in directness with the placing groove (61), and the conical block (62) falls to the position below the movable shovel plate (4) through the blanking opening (64).

4. A quick attach / detach pallet truck according to claim 3, characterized in that The offset mechanisms (6) arranged in pairs are symmetrically arranged on the two sides of the moving axis of the movable shovel plate (4) along the moving direction of the movable shovel plate (4).

5. A quick attach / detach pallet truck according to claim 4, characterized in that A baffle (8) is arranged at the front lower end of the movable shovel plate (4), and the lower end surface of the baffle (8) is flush with the lower end surface of the fixed shovel plate (3).

6. A quick attach / detach pallet truck according to claim 5, characterized in that An outward expansion mechanism (7) is further arranged below the movable shovel plate (4) and located on the side of the conical block (62) away from the moving axis of the movable shovel plate (4), and the outward expansion mechanism (7) is used for assisting in supporting the movable shovel plate (4).

7. A quick attach / detach pallet truck according to claim 6, characterized in that The outer expansion mechanism (7) comprises support seats (74), first springs (75), sliding blocks (73), clamping blocks (72) and abutting blocks (71), the support seats (74) are provided in plurality, the plurality of support seats (74) are sequentially arranged along the moving direction of the moving shovel plate (4), the support seats (74) are installed below the moving shovel plate (4), the first springs (75) are installed in the inner cavities of the support seats (74), the lower ends of the first springs (75) are fixedly connected with the sliding blocks (73), the sliding blocks (73) are slidingly connected in the inner cavities of the support seats (74), the lower ends of the sliding blocks (73) are fixedly connected with main shafts, the lower ends of the main shafts are fixedly connected with the abutting blocks (71), the main shafts are sleeved with the clamping blocks (72), and the clamping blocks (72) are provided with torsion springs at the sleeving positions with the main shafts; Wherein, the clamping block (72) has a cam part, the abutting block (71) has an inclined surface at one end of the lower edge towards the fixed shovel plate (3), the fixed shovel plate (3) is provided with a receiving groove (31), the outlet side of the receiving groove (31) is symmetrically provided with a limiting block (77), and the outlet lower edge of the receiving groove (31) is provided with a circular arc convex part; When the support seat (74) is located outside the receiving groove (31) and the clamping block (72) does not abut against the limiting block (77), the cam part of the clamping block (72) rotates to the lower end edge position of the support seat (74), and the lower end of the abutting block (71) frictionally abuts against the ground.

8. A quick attach / detach pallet truck according to claim 7, characterized in that The upper ends of the support seats (74) are fixedly provided with upper sliding rails (76), the lower end of the moving shovel plate (4) is provided with a second sliding groove, the upper sliding rails (76) are slidingly connected with the moving shovel plate (4) through the second sliding groove, the side ends of the support seats (74) are provided with staggered blocks, the staggered blocks of adjacent support seats (74) are oppositely arranged along the moving direction of the moving shovel plate (4), and the oppositely arranged staggered blocks are fixedly connected through second springs (78), wherein, among the plurality of support seats (74), the support seats (74) at the head and tail positions are fixedly installed on the moving shovel plate (4).

9. A quick attach / detach pallet truck according to claim 1, wherein The dragging mechanism (5) comprises a hook (51), a mounting frame (52), a rotating disc (54), a chain (53) and a winding driving element, the output end of the winding driving element is in transmission connection with the movable end of the chain (53), the fixed end of the chain (53) is fixedly installed on the work vehicle head (2), the chain (53) surrounds the rotating disc (54) and frictionally abuts against the groove of the rotating disc (54), the rotating disc (54) is rotatably installed on a rotating shaft (55), the rotating shaft (55) is fixedly installed on the mounting frame (52), and the outer end of the mounting frame (52) is rotatably connected with the hook (51).

10. A quick attach / detach pallet truck according to claim 9, characterized in that The groove comprises a first groove (541) and a second groove (542), and the first groove (541) and the second groove (542) are alternately distributed, wherein the chain (53) comprises a plurality of ring-coupled chain links, and the first groove (541) and the second groove (542) are respectively matched with the buckling state of the chain links.

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