Adjustable fork structure

Abstract

The forklift truck is a kind of truck which is installed in the state of the art of forklift truck. The forklift truck is a kind of truck which is used for transporting goods by lifting the fork. The forklift truck is a kind of truck which is used for transporting goods by lifting the fork. The forklift truck is a kind of truck which is used for transporting goods by lifting the fork.

Description

Technical Field

[0001] The present invention relates to the technical field of cargo forks, and in particular to an adjustable cargo fork structure. Background Art

[0002] Forklifts are mainly used for cargo handling and are widely used in factories, warehouses, docks and many other places where cargo needs to be loaded and unloaded. Forklifts are industrial handling forklifts, which refer to various wheeled handling forklifts for loading and unloading, stacking and short-distance transportation of palletized cargo. Forklifts are generally equipped with forks. The forks are the key components for directly carrying and transporting cargo. Therefore, their structural design and performance directly affect the efficiency, safety and cost of the handling operation.

[0003] The current forks are mostly of fixed sizes. When carrying and transporting goods, it is difficult to adapt to the spacing of the forks at the bottom of base plates of different specifications. As a result, the forks cannot be accurately positioned when inserted into the base plate, the center of gravity of the goods shifts, causing overloading, affecting the stability and safety of transportation. Moreover, when the forklift is turning or driving on bumpy roads, the base plate is prone to slide along the top surface of the forks, causing overloading of the goods, which in turn causes cargo to tip over and fall, posing a major threat to the safety of the goods, equipment and operators, and causing damage to the goods, resulting in direct economic losses. In addition, when the forklift is braking suddenly or driving downhill, the goods are prone to slide forward and fall over due to inertia, and fall off the fork body, resulting in frequent cargo falling accidents, which not only damage the goods, but also generate strong impact vibration and noise during the falling process, disturbing the working environment, and may even cause accidental injury to surrounding equipment and personnel.

[0004] In view of the above problems, an adjustable fork structure is proposed. Summary of the Invention

[0005] The object of the present invention is to provide an adjustable fork structure. By adopting this device, the problem mentioned in the above background that the existing forks are difficult to flexibly match the fork accommodation spacing at the bottom of base plates of different specifications, causing the center of gravity of the cargo to shift and overload, and the cargo to be easily tipped over by inertia during loading and transportation, and separated from the fork body, thus frequently causing cargo falling accidents.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an adjustable fork structure, comprising a forklift, wherein an end side of the forklift is provided with a mounting frame, a crossbeam is fixedly connected to the mounting frame, two fork bodies are symmetrically slidably connected to the crossbeam, a recess is provided in the fork body, two symmetrical abutment plates are slidably connected in the recess, a resistance assembly is provided in the recess, the resistance assembly comprises a second motor fixedly connected to the fork body, an output end of the second motor is fixedly connected to a rotating rod, a bidirectional screw is fixedly sleeved on the outer ring of the rotating rod, two sliders are symmetrically threadedly mounted on the bidirectional screw, connecting rods are hinged on both sides of the two sliders, and the connecting rods are hinged to the abutment plates;

[0007] The top surface of the end side of the fork body is provided with a groove, and a baffle is rotatably installed in the groove, and a flip assembly is installed in the groove, and the flip assembly includes a screw groove provided on the rotating rod, and a sliding rod is installed on the outer ring of the rotating rod through the screw groove thread, and the end side of the sliding rod is fixedly connected to the U-shaped frame, and the embedded rods are symmetrically fixed on both sides of the U-shaped frame. The rotating shaft is fixed in the groove, and a crank is rotatably connected on the rotating shaft. The crank has an annular groove. The side wall of the baffle is equipped with an interception assembly, and the interception assembly includes an air tank fixedly connected to the abutment plate, a one-way air inlet valve is installed on the air tank, and the end side of the air tank is connected with a connecting pipe, and the connecting A piston rod is slidably connected in the tube, and the end side of the piston rod is fixedly connected to a piston plate, and the piston plate slides in contact with the gas tank, and the end side of the piston rod is fixedly connected to a sliding rod, and a round table is fixed on the side wall of the abutment plate, and a scissor-type lifting frame fence is fixedly installed on the side wall of the baffle, and the sliding column is hinged to the scissor-type lifting frame fence, and the side wall of the gas tank is connected to an air pipe, and the end side of the air pipe is connected to a hose, an electromagnetic valve is installed in the hose, and the end side of the hose is connected to a cylinder, and a spring 2 is fixedly connected in the cylinder, and a sliding column is slidably connected in the cylinder, and a scissor-type lifting frame fence is fixedly installed on the side wall of the baffle, and the sliding column is hinged to the scissor-type lifting frame fence.

[0008] Furthermore, the side wall of the mounting frame is fixedly connected to a motor 1, the output end of the motor 1 is fixedly connected to a bidirectional screw rod, the bidirectional screw rod is rotatably connected to the mounting frame, and the fork body is threadedly mounted on the bidirectional screw rod.

[0009] Furthermore, two abutment plates are symmetrically provided, and the abutment components are symmetrically arranged with respect to the abutment plates.

[0010] Furthermore, a slide groove is provided in the fork body, a limit block is slidably connected in the slide groove, and the limit block is fixedly connected to the abutting plate.

[0011] Furthermore, the embedded rod is slidably connected to the annular groove.

[0012] Furthermore, the crank is fixedly connected to the baffle, and the baffle is rotatably connected to the rotating shaft.

[0013] Furthermore, a spring 1 is fixedly connected to the inner wall of the truncated cone, the other end of the spring 1 is fixedly connected to the piston rod, and an extrusion plate is fixedly connected to the end of the sliding rod.

[0014] Furthermore, the slide column and the cylinder are elastically connected via a second spring, and a pressure relief valve is installed on the bottom side of the cylinder.

[0015] Furthermore, a circular groove for accommodating the extrusion plate is provided on the side wall of the abutment plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The fork body can flexibly adjust the spacing according to the width of the base plate cavity to ensure that the fork is accurately located in the center of the base plate, solving the problem of cargo center of gravity offset caused by size mismatch between the fork and the base plate, and effectively avoiding cargo overloading; the coordinated operation of the abutment plate and the abutment component realizes the adaptive fixation of the fork to different types of base plates, making it difficult for the base plate to slide on the top surface of the fork when the forklift is turning or driving on bumpy roads, effectively reducing safety hazards in the cargo handling process, reducing cargo falling accidents, ensuring cargo transportation safety, avoiding injuries to operators, and reducing economic losses caused by cargo damage; through the interception component, a solid support is formed on the back of the cargo to offset the inertial force, preventing the cargo from sliding from the front end of the fork or tipping over backwards, effectively reducing the cargo damage rate and reducing the impact vibration and noise interference to the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0019] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0020] Figure 3 It is a schematic structural diagram of the conflict component, the flip component and the interception component of the present invention;

[0021] Figure 4 For the present invention Figure 3 Axis structure diagram Figure 1 ;

[0022] Figure 5 For the present invention Figure 3 Axis structure diagram Figure 2 ;

[0023] Figure 6 Schematic diagram of the structure of the interference component and the flip component of the present invention Figure 1;

[0024] Figure 7 Schematic diagram of the structure of the interference component and the flip component of the present invention Figure 2 ;

[0025] Figure 8 It is a schematic structural diagram of the flip assembly and the interception assembly of the present invention;

[0026] Figure 9 This is a schematic diagram of the structure of some components of the interception assembly of the present invention Figure 1 ;

[0027] Figure 10 This is a schematic diagram of the structure of some components of the interception assembly of the present invention Figure 2 ;

[0028] Figure 11 For the present invention Figure 10 Schematic diagram of the axial structure;

[0029] Figure 12 It is a schematic diagram of the cross-sectional structure of the cylinder and sliding column of the present invention.

[0030] Figure: 1, forklift; 2, mounting frame; 3, crossbeam; 4, fork body; 41, motor 1; 42, bidirectional screw; 5, notch; 6, contact plate; 7, contact assembly; 71, motor 2; 72, rotating rod; 73, bidirectional screw; 74, slider; 75, connecting rod; 76, slide; 77, limit block; 8, groove; 81, stopper; 9, flip assembly; 91, screw groove; 92, slide; 93, U-shaped frame; 94, embedded rod; 95, crank; 95 1. Annular groove; 96. Rotating shaft; 10. Interceptor assembly; 101. Gas tank; 102. One-way air inlet valve; 103. Connecting pipe; 104. Piston rod; 105. Piston plate; 106. Sliding rod; 107. Cone; 108. Spring 1; 109. Extrusion plate; 110. Air pipe; 111. Hose; 112. Solenoid valve; 113. Cylinder; 114. Spring 2; 115. Sliding column; 116. Pressure relief valve; 117. Scissor lift frame. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In order to solve the problem that when forking goods, due to the different spacings of the forks arranged at the bottom of the base plate where the goods are placed, when the forks are inserted into the bottom of the base plate for forking, once the transport vehicle turns or moves on a bumpy road, the base plate will be displaced along the top surface of the fork body 4. This displacement phenomenon will cause the goods to be overloaded, and in severe cases, it may even cause the goods to fall down, which may not only cause damage to the goods themselves, but also pose a risk of causing safety accidents. Figures 1-6 As shown, the following preferred technical solutions are provided:

[0033] An adjustable fork structure includes a forklift 1, with a mounting frame 2 mounted on one end thereof, a crossbeam 3 fixedly connected to the mounting frame 2, and two fork bodies 4 symmetrically slidably connected to the crossbeam 3. A motor 41 is fixedly connected to the side wall of the mounting frame 2, a bidirectional screw 42 fixedly connected to the output end of the motor 41, the bidirectional screw 42 being rotatably connected to the mounting frame 2, and the fork bodies 4 being threadedly mounted on the bidirectional screw 42. The two fork bodies 4 can flexibly and precisely adjust their spacing based on the width of the baseboard cavity where the cargo is placed, ensuring they are securely positioned in the center of the baseboard cavity, laying a solid foundation for subsequent forking operations and effectively avoiding the risk of uneven loading of cargo due to improper fork spacing.

[0034] A recess 5 is provided in the fork body 4, and two symmetrical abutment plates 6 are slidably connected in the recess 5. A resistance component 7 is provided in the recess 5, and two abutment plates 6 are symmetrically provided. The resistance components 7 are symmetrically arranged about the abutment plates 6. A slide groove 76 is provided in the fork body 4, and a limit block 77 is slidably connected in the slide groove 76. The limit block 77 is fixedly connected to the abutment plate 6. This arrangement ensures the stability of the sliding of the abutment plate 6 and also plays a guiding role.

[0035] The abutment assembly 7 includes a second motor 71 fixedly connected to the fork body 4, the output end of the second motor 71 is fixedly connected to a rotating rod 72, the outer ring of the rotating rod 72 is fixedly sleeved with a bidirectional screw 73, and two sliders 74 are symmetrically threadedly installed on the bidirectional screw 73. Connecting rods 75 are hinged on both sides of the two sliders 74, and the connecting rods 75 are hinged to the abutment plate 6. A groove 8 is provided on the top surface of the end side of the fork body 4, and a baffle 81 is rotatably installed in the groove 8. A flip assembly 9 is installed in the groove 8, and an interception assembly 10 is installed on the side wall of the baffle 81.

[0036] Specifically, such as Figure 1-2As shown, when forking and transporting goods, the staff first drives the forklift 1 and drives the forklift 1 until the fork body 4 is aligned with the cavity of the base plate where the goods are placed, and then starts the motor 41 to drive the bidirectional screw rod 42 to rotate. Since the threads on the bidirectional screw rod 42 are symmetrically and oppositely arranged, and the fork body 4 and the bidirectional screw rod 42 are threadedly installed, when the bidirectional screw rod 42 rotates, the action of the thread will drive the fork body 4 to move horizontally synchronously, so that the two fork bodies 4 can be adjusted according to the cavity of the base plate, so that the fork body 4 can be in the center position to enter the base plate for forking operation, so that the base plate and the goods will not have uneven center of gravity when the fork is lifted in the subsequent process, which will prevent the goods from tipping over and falling during the subsequent transportation.

[0037] like Figure 1-6 As shown, after the fork body 4 is adjusted to a suitable position, the forklift 1 is started to drive the fork body 4 to enter the cavity in the base plate. When the fork body 4 is completely entered into the base plate, the fork body 4 is at the center of the cavity in the base plate. Then the motor 2 71 is started to drive the rotating rod 72 on its end side to rotate. As the rotating rod 72 rotates, since the bidirectional screw 73 is fixed on the rotating rod 72, the bidirectional screw 73 will rotate with the rotating rod 72 when the rotating rod 72 rotates. Since the threads on the bidirectional screw 73 are symmetrically arranged in opposite directions, and the slider 74 is symmetrically arranged about the bidirectional screw 73, during the rotation of the bidirectional screw 73, When the two sliders 74 are moved, the connecting rods 75 hinged on both sides thereof will rotate synchronously. Moreover, since the abutment plate 6 and the slider 74 are hinged by the connecting rod 75, the limit block 77 fixed on the end side of the abutment plate 6 slides in the slide groove 76 in the fork body 4. Therefore, when the connecting rod 75 rotates, the abutment plate 6 hinged thereto will drive the limit block 77 to slide outward along the slide groove 76, so that the abutment plates 6 symmetrical at both ends slide out of the notch 5 of the fork body 4, so that the abutment plates 6 slide toward the inner wall of the base plate until the abutment plates 6 slide to fit the inner wall of the base plate and stop driving.

[0038] By adjusting the abutment plate 6, the fork body 4 can be adaptively adjusted according to the cavity in the base plate, so that it can be used for different types of base plates, reducing the limitations of the use of the fork, and through the abutment of the abutment plate 6 with the inner wall of the base plate, when the transport vehicle turns or moves on a bumpy road, the base plate will not be displaced along the top surface of the fork body 4, thereby reducing the problem of uneven loading of base plates and cargo during turning or bumpy movement, further preventing the occurrence of cargo tipping and falling, reducing damage to the cargo itself, and reducing the risk of safety accidents.

[0039] In order to solve the technical problem that when the forklift 1 performs an emergency braking operation or travels on a downhill section, the cargo is easy to slide forward due to inertia and separate from the fork body 4, thereby causing the risk of tipping and falling, thereby causing damage to the cargo, affecting transportation efficiency, and possibly posing a safety threat to operators and surrounding equipment, such as Figures 1-12 As shown, the following preferred technical solutions are provided:

[0040] The flip assembly 9 includes a screw groove 91 provided on the rotating rod 72, and a sliding rod 92 is threadedly installed on the outer ring of the rotating rod 72 through the screw groove 91. The end side of the sliding rod 92 is fixedly connected to a U-shaped frame 93, and embedded rods 94 are symmetrically fixed on both sides of the U-shaped frame 93. A rotating shaft 96 is fixed in the groove 8, and a crank 95 is rotatably connected to the rotating shaft 96. An annular groove 951 is provided in the crank 95, and the embedded rod 94 is slidably connected to the annular groove 951. The crank 95 is fixedly connected to the baffle 81, and the baffle 81 is rotatably connected to the rotating shaft 96.

[0041] The interception assembly 10 includes a gas tank 101 fixedly connected to the abutment plate 6, and a one-way air inlet valve 102 is installed on the gas tank 101, so that the gas flows into the gas tank 101 in one direction, ensuring that the gas in the tank does not flow back and maintains the stability of the system. The end side of the gas tank 101 is connected to a connecting pipe 103, and a piston rod 104 is slidably connected in the connecting pipe 103. The end side of the piston rod 104 is fixedly connected to a piston plate 105, and the piston plate 105 slides in contact with the gas tank 101. The end side of the piston rod 104 is fixedly connected to a sliding rod 106, and a round table 107 is fixed to the side wall of the abutment plate 6. A spring 108 is fixedly connected to the inner wall of the round table 107, and the other end of the spring 108 is fixedly connected to the piston rod 104. An extrusion plate 109 is fixedly connected to the end of the sliding rod 106, and a circular groove for accommodating the extrusion plate 109 is provided on the side wall of the abutment plate 6.

[0042] The side wall of the gas storage tank 101 is connected to an air pipe 110, and the end side of the air pipe 110 is connected to a hose 111, and a solenoid valve 112 is installed in the hose 111. The end side of the hose 111 is connected to a cylinder 113, and a spring 2 114 is fixedly connected in the cylinder 113. A sliding column 115 is slidably connected in the cylinder 113. The sliding column 115 and the cylinder 113 are elastically connected by the spring 2 114. A pressure relief valve 116 is installed on the bottom side of the cylinder 113. A scissor-type lifting frame fence 117 is fixedly installed on the side wall of the baffle 81, and the sliding column 115 is hinged to the scissor-type lifting frame fence 117.

[0043] Specifically, the above technical solution mentioned that after the motor 2 71 is started, the rotating rod 72 is driven to rotate, and the rotating rod 72 further drives the bidirectional screw 73 connected thereto to rotate. Based on the principle of screw transmission, the two sliders 74 on the outer shaft of the bidirectional screw 73 begin to slide away from each other in opposite directions, thereby pushing the abutment plate 6 to slide toward the inner wall of the substrate until it is closely fitted with the substrate. When the abutment plate 6 and the substrate are in contact with each other, as shown in FIG. Figure 7-9 As shown, the substrate applies pressure to the extrusion plate 109 on the side wall of the abutment plate 6. Since the extrusion plate 109 is fixedly connected to the sliding rod 106, the sliding rod 106 is firmly connected to the piston rod 104, and the piston rod 104 is slidably connected to the connecting tube 103, once the substrate applies an extrusion force, the sliding rod 106 and the piston rod 104 will slide synchronously in the connecting tube 103. As the piston rod 104 slides, the piston plate 105 fixed on its end side will also slide along the inner wall of the gas tank 101. In this way, the gas originally stored in the gas tank 101 will be squeezed out.

[0044] It should be noted that the gas tank 101 stores a sufficient amount of gas in the initial state. At the same time, the sliding rod 106 and the round table 107 are elastically connected by a spring 108. During the sliding of the sliding rod 106, the spring 108 is stretched and the elastic potential energy is stored. As the piston plate 105 continues to push the gas, the squeezed gas is transported along the pipeline to the air pipe 110 and the hose 111 in turn for storage for subsequent use.

[0045] like Figure 2-5 As shown, when the motor 2 71 drives the rotating rod 72 to rotate, since the screw groove 91 is provided on the end side of the rotating rod 72, the slide rod 92 is screwed to the rotating rod 72 through the screw groove 91. Therefore, when the rotating rod 72 rotates, the action of the screw thread causes the slide rod 92 to slide toward the side close to the abutment plate 6. As the slide rod 92 slides, as shown in FIG. Figure 5-6 As shown, since the slide bar 92 is fixedly connected to the U-shaped frame 93, and the two sides of the U-shaped frame 93 are fixed to the embedded rod 94, the U-shaped frame 93 and the embedded rod 94 will slide with the slide bar 92. During the sliding process, since the crank 95 is rotatably connected to the rotating shaft 96, the embedded rod 94 is slidably connected to the annular groove 951 in the crank 95. Therefore, when the embedded rod 94 slides with the U-shaped frame 93, the embedded rod 94 will be placed in the annular groove 951 of the crank 95 and slide, thereby generating a pulling effect on the crank 95, causing the crank 95 to rotate around the rotating shaft 96. The crank 95 is fixedly connected to the baffle 81, so the baffle 81 rotates with the crank 95 until the crank 95 rotates to a perpendicular state with the fork body 4. At this time, Figure 6 As shown, the interception component 10 is completely exposed and enters a working standby state.

[0046] Then, the solenoid valve 112 is opened. As a key component of gas circuit control, the solenoid valve 112 generates electromagnetic force through its electromagnetic coil after being energized, pushing the valve core to move, thereby accurately adjusting the gas output flow. Since the hose 111 and the cylinder 113 are interconnected, the compressed gas originally stored in the hose 111 will quickly flow into the cylinder 113 under the drive of the pressure difference when the solenoid valve 112 is opened.

[0047] After the gas enters the cylinder 113, it immediately creates a thrust on the sliding column 115 in the cylinder, causing the sliding column 115 to extend outward. It is worth noting that the sliding column 115 and the cylinder 113 are elastically connected via the second spring 114. During the extension of the sliding column 115, the second spring 114 will be stretched synchronously. The reverse elastic force generated when the second spring 114 is stretched can not only buffer the movement of the sliding column 115, making its movement more stable and smooth, but also can cope with external force impact to a certain extent, thereby enhancing the stability of the entire device.

[0048] At the same time, the sliding column 115 and the scissor-type lifting frame barrier 117 are hingedly connected. This design allows the force generated by the extension of the sliding column 115 to be effectively transmitted to the scissor-type lifting frame barrier 117, so that the entire scissor-type lifting frame barrier 117 is gradually unfolded and stretched upward. As the stretching action continues, the scissor-type lifting frame barrier 117 continues to rise until it reaches the expected height that can effectively intercept the back of the cargo.

[0049] In this way, at the moment when the forklift 1 performs an emergency braking operation, even if the cargo tends to move forward due to inertia, the center of gravity of the cargo will not move forward excessively because the scissor-type lifting frame bar 117 has formed a stable support on the back of the cargo, thereby avoiding the risk of the cargo sliding from the front end of the forks and effectively preventing the cargo from tipping over and falling backwards. This not only reduces the possibility of damage to the cargo due to falling, but also reduces the impact vibration and noise caused by the falling cargo to the surrounding environment.

[0050] It should be noted that the scissor-type lifting frame barrier 117 is usually composed of multiple groups of cross-arranged rods, shaped like a scissors structure, and the rods are hinged to each other by means of pins, etc. When the slide column 115 is extended to apply external force, the relative positions of the intersections of the scissor-type structure change, and the angles and lengths between the rods are also adjusted accordingly, and the entire scissor-type lifting frame barrier 117 will undergo a lifting and stretching action. As this action continues, the scissor-type lifting frame barrier 117 continues to stretch until it reaches the desired height, thereby effectively intercepting the back of the goods and preventing the goods from slipping due to factors such as forward tilting and displacement during transportation. It should be noted that Figure 1-12 The scissor-type lifting frame barrier 117 shown in the figure is only a schematic diagram, and its illustrated height does not fully reflect the actual working status. In actual application, the specifications and parameters of the scissor-type lifting frame barrier 117 need to be selected and adjusted according to specific requirements such as cargo size and handling scenarios to ensure the effectiveness and applicability of its interception function.

[0051] After the cargo is intercepted, it is driven by the forklift 1 to move it to the desired transport location. Once in place, the pressure relief valve 116 is first opened to quickly discharge the gas in the cylinder 113. As the gas is discharged, the slide column 115 retracts into the cylinder 113 under the elastic restoring force of the spring 2 114, driving the scissor-type lifting frame 117 to descend and fold, thereby releasing the interception support on the back of the cargo.

[0052] Subsequently, the motor 2 71 is started in reverse, driving the rotating rod 72 to rotate counterclockwise. Due to the threaded connection between the screw groove 91 at the end of the rotating rod 72 and the sliding rod 92, the sliding rod 92 slides in the direction away from the abutment plate 6, and drives the crank 95 to rotate in the opposite direction through the U-shaped frame 93 and the embedded rod 94, so that the baffle 81 rotates around the rotating shaft 96, and the interception assembly 10 is retracted and reset.

[0053] At the same time, motor 2 71 drives bidirectional screw 73 in reverse rotation. Due to the symmetrical, reversed threading characteristics of bidirectional screw 73, the two sliders 74 threaded therewith synchronously move in opposite directions, approaching each other horizontally. This pulls abutment plate 6 inward of the fork body 4 via connecting rod 75, sliding until abutment plate 6 is fully retracted into recess 5 of the fork body 4, releasing its contact with the inner wall of the baseplate. At this point, in the gas tank 101 system, as abutment plate 6 retracts, the pressure from the baseplate on extrusion plate 109 disappears. Under the elastic restoring force of spring 108, sliding rod 106 and piston rod 104 drive piston plate 105 in the opposite direction, allowing gas to be redrawn through one-way inlet valve 102, returning to its initial storage state.

[0054] After the abutment plate 6 and the interception assembly 10 have been reset, the forklift 1 is operated to slowly move backwards, allowing the fork body 4 to be smoothly withdrawn from the cavity of the base plate. Since the position of the fork body 4 has been accurately adjusted when picking up the goods, and all fixing and protective measures have been released before unloading, the base plate and the goods will not be displaced or tipped over due to inertia and impact during the fork withdrawal process.

[0055] In addition, since the fork is in the cavity within the base plate spacing before unloading and does not contact the base plate, even if the ground at the transportation location is uneven, has a slope, or has a vibration source, when the fork is withdrawn, even if the forklift 1 happens to pass through a pothole on the ground or is affected by the vibration transmission of other equipment, it will not cause the goods to fall. When the fork body 4 is completely withdrawn, the goods have been stably placed at the target position, and the unloading operation is successfully completed.

[0056] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable fork structure, comprising a forklift (1), characterized in that: The forklift (1) is provided with a mounting frame (2) at the end side, a crossbeam (3) is fixedly connected to the mounting frame (2), two fork bodies (4) are symmetrically slidably connected to the crossbeam (3), a recess (5) is provided in the fork body (4), two symmetrical abutment plates (6) are slidably connected in the recess (5), a resistance assembly (7) is provided in the recess (5), the resistance assembly (7) comprises a second motor (71) fixedly connected to the fork body (4), a rotating rod (72) is fixedly connected to the output end of the second motor (71), a bidirectional screw (73) is fixedly sleeved on the outer ring of the rotating rod (72), two sliders (74) are symmetrically threadedly installed on the bidirectional screw (73), connecting rods (75) are hinged on both sides of the two sliders (74), and the connecting rods (75) are hinged to the abutment plates (6); The fork body (4) is provided with a groove (8) on the top surface of the end side, a baffle (81) is rotatably installed in the groove (8), a flip assembly (9) is installed in the groove (8), the flip assembly (9) includes a screw groove (91) provided on the rotating rod (72), a sliding rod (92) is threadedly installed on the outer ring of the rotating rod (72) through the screw groove (91), the end side of the sliding rod (92) is fixedly connected to a U-shaped frame (93), and the inner side of the U-shaped frame (93) is symmetrically fixed on both sides. The embedded rod (94) is fixed with a rotating shaft (96) in the groove (8), and a crank (95) is rotatably connected to the rotating shaft (96). An annular groove (951) is provided in the crank (95). An interception assembly (10) is installed on the side wall of the baffle (81), and the interception assembly (10) includes an air storage tank (101) fixedly connected to the abutting plate (6). A one-way air inlet valve (102) is installed on the air storage tank (101). The air storage tank (101) is connected to the side of the air storage tank (101). A connecting pipe (103) is provided, a piston rod (104) is slidably connected to the connecting pipe (103), a piston plate (105) is fixedly connected to the end side of the piston rod (104), the piston plate (105) slides in contact with the gas storage tank (101), a sliding rod (106) is fixedly connected to the end side of the piston rod (104), a round table (107) is fixed to the side wall of the abutting plate (6), and an air pipe (110) is connected to the side wall of the gas storage tank (101). The end side of the hose (110) is connected to a hose (111), a solenoid valve (112) is installed in the hose (111), the end side of the hose (111) is connected to a cylinder (113), a spring 2 (114) is fixedly connected in the cylinder (113), a sliding column (115) is slidably connected in the cylinder (113), a scissor-type lifting frame (117) is fixedly installed on the side wall of the baffle (81), and the sliding column (115) is hinged to the scissor-type lifting frame (117).

2. The adjustable fork structure according to claim 1, characterized in that: The side wall of the mounting frame (2) is fixedly connected to a motor 1 (41), the output end of the motor 1 (41) is fixedly connected to a bidirectional screw rod (42), the bidirectional screw rod (42) is rotatably connected to the mounting frame (2), and the fork body (4) is threadedly mounted on the bidirectional screw rod (42).

3. The adjustable fork structure according to claim 1, characterized in that: Two abutment plates (6) are symmetrically provided, and the abutment components (7) are symmetrically arranged with respect to the abutment plates (6).

4. The adjustable fork structure according to claim 3, characterized in that: A sliding groove (76) is provided in the fork body (4), a limiting block (77) is slidably connected in the sliding groove (76), and the limiting block (77) is fixedly connected to the abutting plate (6).

5. The adjustable fork structure according to claim 1, characterized in that: The embedded rod (94) is slidably connected to the annular groove (951).

6. The adjustable fork structure according to claim 5, characterized in that: The crank (95) is fixedly connected to the baffle (81), and the baffle (81) is rotatably connected to the rotating shaft (96).

7. The adjustable fork structure according to claim 1, characterized in that: A spring 1 (108) is fixedly connected to the inner wall of the truncated cone (107), the other end of the spring 1 (108) is fixedly connected to the piston rod (104), and an extrusion plate (109) is fixedly connected to the end of the sliding rod (106).

8. The adjustable fork structure according to claim 1, characterized in that: The slide column (115) and the cylinder (113) are elastically connected via a second spring (114), and a pressure relief valve (116) is installed on the bottom side of the cylinder (113).

9. The adjustable fork structure according to claim 7, characterized in that: The side wall of the abutment plate (6) is provided with a circular groove for accommodating the extrusion plate (109).

Images