A heavy-duty warehouse door opening and closing machine

Abstract

The present invention provides a heavy-duty warehouse door opening and closing machine, including a frame, a driving member fixed on the frame, the driving member is fixedly connected to one end of a pulley block through a connecting member, the pulley block is connected to a steering pulley through a rope, one end of the rope is fixed to the pulley block, the other end of the rope is fixedly connected to one end of a door body, and the other end of the door body is hinged to the left side of a ground groove through a hinge support. The heavy-duty warehouse door horizontal opening and closing machine of the present invention has a simple structure, ingenious design, low cost, safety and stability. During the process of opening and closing the door body, the space required for the door body to rotate is small, and the height requirement for the warehouse is not high; the oil cylinder drives the door body to rotate around the hinge support through two sets of pulley blocks to realize opening and closing, and the door body is opened quickly and efficiently, saving time and horizontal space. It is particularly suitable for occasions where the warehouse height is not high and the horizontal space is small.

Description

Technical Field

[0001] The invention relates to the technical field of opening and closing of heavy-duty doors, and in particular to a heavy-duty warehouse door opening and closing machine. Background Art

[0002] At present, most heavy warehouse doors are opened and closed by vertical lifting / lowering. This opening and closing method needs to overcome the gravity of the heavy warehouse door and completely lift the warehouse door when opening. However, due to its large mass, the heavy warehouse door needs to use a door-opening machine with a large opening and closing force, which increases the investment cost. In addition, the start-up has certain height requirements for the warehouse, which is not suitable for occasions where the warehouse height is not enough.

[0003] The rotary opening and closing method does not need to completely overcome the gravity to lift the warehouse door when opening, which reduces the opening and closing force; and the rotary opening and closing does not need to lift the warehouse door upward, so the height requirement of the warehouse is relatively low. Therefore, the rotary opening and closing method can use a hoist with a smaller opening and closing force, which greatly reduces the investment cost and is suitable for occasions with low warehouse height.

[0004] However, the current heavy warehouse door opening and closing machine uses a rotating door axis that is perpendicular to the ground. Generally, a thrust is applied to rotate the warehouse door along the door axis to open and close the door. Although this method does not require a high warehouse height, the door body is still perpendicular to the ground when it is open. In order to prevent the door body from blocking the cargo transportation channel when it is open, a larger rotation angle needs to be set so that the door body is close to the warehouse wall when it is open. Therefore, the lateral space required for opening and closing this type of warehouse door is large, which is not suitable for occasions with small warehouse sizes. In addition, the warehouse door is not very stable when it is open and closed, which poses certain safety hazards.

[0005] Therefore, a heavy-duty warehouse door opening and closing machine suitable for low warehouse height, small lateral space, high opening and closing efficiency and stability needs to be studied urgently. Summary of the invention

[0006] In order to overcome the deficiencies of existing research, the present invention provides a heavy-duty warehouse door opening and closing machine, which has a simple structure, ingenious design, low cost, safety and stability. During the process of opening and closing the door body, the space required for the door body to rotate is small, and the height requirement for the warehouse is not high; the oil cylinder drives the door body to rotate around the hinge support through two sets of pulleys to achieve opening and closing, and the door body is opened quickly and efficiently, saving time and space, and is particularly suitable for occasions where the warehouse height is not high and the lateral space is small. In order to achieve the above functions, the above technical problems of the present invention are mainly solved by the following technical solutions:

[0007] The present invention provides a heavy-duty warehouse door opening and closing machine, comprising a frame, on which a driving member is fixed, the driving member being fixedly connected to one end of a pulley block via a connecting member, the pulley block being connected to a steering pulley via a rope, one end of the rope being fixed to the pulley block, the other end of the rope being fixedly connected to one end of a door body, and the other end of the door body being hinged to the left side of a ground groove via a hinge support.

[0008] Furthermore, the driving member is a cylinder, the cylinder is horizontally mounted on a cylinder seat, and the cylinder seat is fixed on the frame.

[0009] Furthermore, the pulley block includes a movable pulley block, a fixed pulley block, a movable pulley block bracket, and a fixed pulley block bracket. The movable pulley block is slidably connected to the movable pulley block bracket, the fixed pulley block is fixed on the fixed pulley block bracket, and one end of the rope is fixed on the fixed pulley block bracket.

[0010] Furthermore, the movable pulley block includes a movable pulley shaft, on which movable pulley one and movable pulley two are rotatably connected, and the movable pulley shaft is slidably connected to a movable pulley block bracket;

[0011] An axial hole is arranged at the position where the movable pulley shaft is connected to the movable pulley block bracket, clamping plates are arranged above and below the axial hole, the movable pulley shaft is arranged in the axial hole, and the axial hole is a waist-shaped hole.

[0012] Furthermore, the fixed pulley block includes a fixed pulley shaft, on which a fixed pulley 1 and a fixed pulley 2 are rotatably connected, and the fixed pulley shaft is fixed on a fixed pulley block bracket.

[0013] Furthermore, the rope is a steel wire rope, a rope loop is provided at the starting end of the steel wire rope, a steel wire rope knot is provided at the end of the steel wire rope, the rope loop is fixed on the fixed pulley block bracket, and the steel wire rope knot is fixed at one end of the door body.

[0014] Furthermore, the starting end of the wire rope is led out from the rope loop, and is wound from the bottom of movable pulley one to the top of movable pulley one, and then from the top of movable pulley one to the top of fixed pulley one, and then from the bottom of fixed pulley one to the bottom of movable pulley two, and then from the top of movable pulley two to the top of fixed pulley two, and then wound out from the left side of fixed pulley two to the left side of the steering pulley until the end of the wire rope is fixed to one end of the door body through the wire rope node.

[0015] Furthermore, the connecting member includes a connecting frame, a connecting shaft is provided on the right part of the connecting frame, the connecting shaft is fixedly connected to the telescopic rod of the oil cylinder, and the left part of the connecting frame is fixedly connected to the movable pulley shaft.

[0016] Furthermore, a guide pulley is provided at one end of the door body close to the rope, the guide pulley is rollingly connected to the slide rail, a support block is provided on the door body panel, and when the door body is fully opened, the door body is located in the groove and the door body back panel is flush with the ground.

[0017] Furthermore, the slide rails are arranged on the door grooves on both sides of the door body, and the slide rails are 45° arc tracks centered on the hinge support.

[0018] Detailed opening process of the door.

[0019] When the door body is in a fully closed state, the door body is perpendicular to the ground. When the door body needs to be opened, the oil cylinder is started to extend the oil cylinder telescopic rod to the left. The oil cylinder telescopic rod extends to the left by X, driving the connecting shaft to move left. The connecting shaft moves left and drives the connecting frame to move left. The connecting frame moves left and drives the movable pulley shaft to move left in the shaft hole of the movable pulley block bracket. The movable pulley shaft moves left and drives the movable pulley 1 and the movable pulley 2 to rotate to the left at the same time. The movable pulley block 1 and the movable pulley 2 rotate to the left and drive the wire rope to loosen and move to the left. The loosening of the wire rope to the left drives the fixed pulley 1 and the fixed pulley 2 to rotate counterclockwise, and the wire rope moves downward along the steering pulley with a loose displacement of 4X. The wire rope moves downward in a loose manner, thereby driving the steering pulley to rotate counterclockwise. The loose downward movement of the wire rope drives the door body to rotate about the hinge support. Since the center of gravity of the door body is located on the right side of the hinge support, the door body rotates clockwise about the hinge support. At the same time, the guide pulley on the door body rotates clockwise on the slide rail, so that the door body does not shake when it rotates clockwise about the hinge support, and is more stable. It also makes the door body rotate clockwise more labor-saving and smooth, reducing the opening resistance. It rotates clockwise until the door body is located in the groove on the ground and the back panel of the door body is flush with the ground. At the same time, the support block contacts the ground at the groove. At this time, the door body is in a fully open state.

[0020] The detailed closed state of the door body is opposite to the detailed open state.

[0021] During the process of opening and closing the door, the space required for the door to rotate is small, and the height requirement for the warehouse is not high; the cylinder drives the door to rotate around the hinge support through two sets of pulleys to achieve opening and closing, and the required lateral distance is short, which greatly saves space.

[0022] The setting of the steering pulley allows the rope to automatically turn along the steering pulley. The setting of the support block allows the door body to be supported when it is opened, so as to prevent the door panel from contacting the bottom surface of the groove and causing friction damage, and at the same time ensure that the door body is opened in the correct position, thereby ensuring that the door body back panel is flush with the ground.

[0023] According to actual conditions, a device for fixing the guide pulley can also be arranged in the slide rail to make the door body be at an open or closed angle.

[0024] When the movable pulley 1 and the movable pulley 2 move to the left, they move to the leftmost end of the shaft hole, and the door body is in a fully open state. When the movable pulley group moves to the rightmost end of the shaft hole, the door body is in a closed state.

[0025] The shaft hole is a waist-shaped hole, which makes it easier for the movable pulley shaft to move in the shaft hole. The clamping plate has an axial positioning effect on the movable pulley shaft, making the door body more stable and not shaking during the rotation process.

[0026] When the door is in a fully open state, it rotates until the door is located in a groove on the ground and the back panel of the door is flush with the ground, making it safer and more convenient for people to work and walk and for transporting goods.

[0027] Two sets of movable pulleys are connected in parallel, two sets of fixed pulleys are connected in parallel, the oil cylinder is extended by X, and the displacement of the wire rope outgoing section is 4X, which can save lateral space.

[0028] Beneficial effects of the present invention.

[0029] 1. The heavy-duty warehouse door horizontal opening and closing machine of the present invention adopts two sets of movable pulleys in parallel and two sets of fixed pulleys in parallel, the oil cylinder is extended by X, and the displacement of the wire rope outgoing rope section is 4X, which can save lateral space.

[0030] 2. In the horizontal opening and closing machine for heavy warehouse doors of the present invention, the shaft hole of the movable pulley block bracket adopts a waist-shaped hole, so that the movable pulley has a large range of movement in the shaft hole, and the moving distance of the movable pulley in the waist-shaped hole can be adjusted as needed, so that the door body can be opened and closed at different angles.

[0031] 3. The heavy-duty warehouse door horizontal opening and closing machine of the present invention has clamping plates on the upper and lower sides of the shaft hole of the movable pulley block bracket, which can always play a role in axial positioning of the movable pulley block bracket. The movable pulley block bracket is fixed by the clamping plate, making the door body safer and more stable when opened or closed.

[0032] 4. The heavy-duty warehouse door horizontal opening and closing machine of the present invention has a simple structure, ingenious design, low cost, safety and stability. During the opening and closing process of the door body, the space required for the door body to rotate is small, and the height requirement for the warehouse is not high; the oil cylinder drives the door body to rotate around the hinge support through two sets of pulleys to achieve opening and closing, and the door body is opened quickly and efficiently, saving time and space. It is especially suitable for occasions where the warehouse height is not high and the lateral space is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 This is a schematic structural diagram of the heavy-duty warehouse door opening and closing machine of the present invention in a closed state;

[0035] Figure 2 for Figure 1 Middle AA partial section view;

[0036] Figure 3 This is a structural schematic diagram of the heavy-duty warehouse door opening and closing machine of the present invention in an open state;

[0037] Figure 4 for Figure 3 Partial cross-sectional view of middle BB;

[0038] In the figure: 1, frame; 2, driving part; 2-1, cylinder; 2-2, cylinder seat; 3, movable pulley block; 3-1 movable pulley shaft; 3-2, movable pulley one; 3-3, movable pulley two; 4, connecting part; 4-1, connecting frame; 4-2, connecting shaft; 5, movable pulley block bracket; 5-1, shaft hole; 5-2, clamping plate; 6, fixed pulley block; 6-1, fixed pulley shaft; 6-2, fixed pulley one; 6-3, fixed pulley two; 7, fixed pulley block bracket; 8, rope; 8-1, wire rope; 8-2, rope loop; 8-3, wire rope section; 9, steering pulley; 10, door body; 10-1, back panel; 10-2, panel; 11, hinge support; 12, groove; 13, guide pulley; 14, slide rail; 15, ground; 16, support block. DETAILED DESCRIPTION

[0039] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0040] like Figure 1-4 As shown, the heavy-duty warehouse door opening and closing machine in this embodiment includes a frame 1, on which a driving member 2 is fixed, the driving member 2 is fixedly connected to one end of a pulley block through a connecting member 4, the pulley block is connected to a steering pulley 9 through a rope 8, one end of the rope 8 is fixed to the pulley block, the other end of the rope 8 is fixedly connected to one end of a door body 10, and the other end of the door body 10 is hinged to the left side of a groove 12 in the ground 15 through a hinge support 11.

[0041] The driving member 2 is a cylinder 2 - 1 , which is horizontally mounted on a cylinder seat 2 - 2 , and the cylinder seat 2 - 2 is fixed on the frame 1 .

[0042] The pulley block includes a movable pulley block 3, a fixed pulley block 6, a movable pulley block bracket 5, and a fixed pulley block bracket 7. The movable pulley block 3 is slidably connected to the movable pulley block bracket 5, the fixed pulley block 6 is fixed on the fixed pulley block bracket 7, and one end of the rope 8 is fixed on the fixed pulley block bracket 7.

[0043] The movable pulley block 3 includes a movable pulley shaft 3-1, on which a movable pulley 1 3-2 and a movable pulley 2 3-3 are rotatably connected, and the movable pulley shaft 3-1 is slidably connected to a movable pulley block bracket 5;

[0044] An axial hole 5-1 is provided at the position where the movable pulley shaft 3-1 is connected to the movable pulley block bracket 5, and clamping plates 5-2 are provided above and below the axial hole 5-1. The movable pulley shaft 3-1 is arranged in the axial hole 5-1, and the axial hole 5-1 is a waist-shaped hole.

[0045] The fixed pulley block 6 comprises a fixed pulley shaft 6 - 1 , to which fixed pulleys 1 6 - 2 and 1 6 - 2 are rotatably connected, and the fixed pulley shaft 6 - 1 is fixed on a fixed pulley block bracket 7 .

[0046] The rope 8 is a steel wire rope 8 - 1 , a rope loop 8 - 2 is provided at the starting end of the steel wire rope 8 - 1 , a steel wire rope segment 8 - 3 is provided at the end of the steel wire rope 8 - 1 , the rope loop 8 - 2 is fixed on the fixed pulley bracket 7 , and the steel wire rope segment 8 - 3 is fixed on one end of the door body 10 .

[0047] The starting end of the wire rope 8-1 is led out from the rope loop 8-2, and is wound from the bottom of the movable pulley 3-2 to the top of the movable pulley 3-2, and then from the top of the movable pulley 3-2 to the top of the fixed pulley 6-2, and then from the bottom of the fixed pulley 6-2 to the bottom of the movable pulley 2 3-3, and then from the top of the movable pulley 2 3-3 to the top of the fixed pulley 2 6-3, and then wound out from the left side of the fixed pulley 2 6-3 to the left side of the steering pulley 9 until the end of the wire rope 8-1 is fixed to one end of the door body 10 through the wire rope segment 8-3.

[0048] The connecting member 4 comprises a connecting frame 4-1, the right part of which is provided with a connecting shaft 4-2, the connecting shaft 4-2 is fixedly connected to the telescopic rod of the oil cylinder 2-1, and the left part of the connecting frame 4-1 is fixedly connected to the movable pulley shaft 3-1.

[0049] A guide pulley 13 is provided at one end of the door body 10 close to the rope 8, and the guide pulley 13 is rollingly connected to the slide rail 14. A support block 16 is provided on the panel 10-2 of the door body 10. When the door body 10 is fully opened, the door body 10 is located in the groove 12 and the back panel 10-1 of the door body 10 is flush with the ground 15.

[0050] The slide rails 14 are arranged on the door grooves on both sides of the door body 10 , and the slide rails 14 are 45° arc tracks centered on the hinge support 11 .

[0051] The working principle and process of the present invention.

[0052] like Figure 1-4 As shown, the door body 10 is in the opening process.

[0053] When the door body 10 is in a fully closed state, the door body 10 is perpendicular to the ground 15. When the door body 10 needs to be opened, the driving member 2 is started to extend. The extension of the driving member 2 drives the connecting member 4 to move to the left. The connecting member 4 moves to the left and drives the movable pulley block 3 to move to the left on the movable pulley block bracket 5. The movement of the movable pulley block 3 drives the rope 8 to relax and move to the left along the fixed pulley block 6 in turn, and moves downward along the left side of the fixed pulley block 6, thereby relaxing and moving downward along the steering pulley 9. The rope 8 moves downward and drives the door body 10 to move downward. The other end of the door body 10 is hinged to the hinge support 11. Due to the gravity of the door body 10, the door body 10 rotates around the hinge support 11, and the center of the door body 10 is on the right side of the hinge support 11. Due to the loosening of the rope 8, the door body 10 automatically rotates to the right around the hinge support 11, and continues to rotate until the door body 10 is located in the ground groove 12, the back panel 10-1 of the door body 10 is just level with the ground 15, and the support block 16 on the panel 10-2 of the door body 10 is in contact with the bottom surface of the groove 12 to support the door body 10. The panel 10-2 does not contact the bottom surface of the groove 12. At this time, the door body 10 is in a fully open state.

[0054] The door body 10 is in a closed state.

[0055] When the door 10 needs to be closed, the driving member 2 is started to shorten, and the shortening of the driving member 2 drives the connecting member 4 to move rightward, and the connecting member 4 moves rightward to drive the movable pulley block 3 to move rightward on the movable pulley block bracket 5, and the movable pulley block 3 moves to drive the rope 8 to move rightward along the fixed pulley block 6 in turn, and moves upward along the left side of the fixed pulley block 6, thereby moving upward along the steering pulley 9. The rope 8 moves upward and drives the door 10 to move upward. The other end of the door 10 is hinged to the hinge support 11, and the door 10 rotates to the left with the hinge support 11 as the center until the door 10 is perpendicular to the ground 15, and the support block 16 contacts the ground at the groove 12, and the door 10 is in a completely closed state.

[0056] The setting of the diverting pulley 9 enables the rope 8 to automatically divert along the diverting pulley 9. The setting of the support block 16 enables the door body 10 to be supported when it is opened, so as not to contact the bottom surface of the groove 12, thereby preventing the panel 10-2 of the door body 10 from contacting the bottom surface of the groove 12 and causing friction damage, and at the same time, the correct position of the door body 10 can be ensured, thereby ensuring that the back panel 10-1 of the door body 10 is flush with the ground 15.

[0057] The detailed opening process of the door body 10.

[0058] When the door body 10 is in a fully closed state, the door body 10 is perpendicular to the ground 15. When the door body 10 needs to be opened, the oil cylinder 2-1 is started to extend the oil cylinder telescopic rod to the left. The oil cylinder telescopic rod extends to the left by X, driving the connecting shaft 4-2 to move to the left. The connecting shaft 4-2 moves to the left and drives the connecting frame 4-1 to move to the left. The connecting frame 4-1 moves to the left and drives the movable pulley shaft 3-1 to move to the left in the shaft hole 5-1 of the movable pulley block bracket 5. The movable pulley shaft 3-1 moves to the left and drives the movable pulley 1 3-2 and the movable pulley 2 3-3 to rotate to the left at the same time. The movable pulley block 1 3-2 and the movable pulley 2 3-3 rotate to the left and drive the wire rope 8-1 to relax and move to the left. The wire rope 8-1 relaxes and moves to the left, drives the fixed pulley 1 6-2 and the fixed pulley 1 6-2 to rotate counterclockwise, and the wire rope 8-1 moves downward along the steering pulley 9 with a displacement of 4X. The wire rope 8-1 moves downwardly in a relaxed manner, thereby driving the steering pulley 9 to rotate counterclockwise. The downward relaxed movement of the wire rope 8-1 drives the door body 10 to rotate around the hinge support 11. Since the center of gravity of the door body 10 is located on the right side of the hinge support 11, the door body 10 rotates clockwise around the hinge support 11. At the same time, the guide pulley 13 on the door body 10 rotates clockwise on the slide rail 14, so that the door body 10 does not shake when rotating clockwise around the hinge support 11, which is more stable. It also makes the door body rotate clockwise more labor-saving and smooth, reducing the opening resistance, and continues to rotate clockwise until the door body 10 is located in the groove 12 on the ground and the back plate 10-1 of the door body 10 is flush with the ground. At this time, the door body 10 is in a fully open state, and at the same time, the clamping plate 5-2 fixes the movable pulley shaft 6-1 to make the door body 10 in a fully open state safe and stable.

[0059] The detailed closing process of the door body 10 moves in the opposite direction to the detailed opening process.

[0060] During the opening and closing process of the door body 10, the space required for the rotation of the door body 10 is small, and the height requirement for the warehouse is not high; the cylinder 2-1 drives the door body 10 to rotate around the hinge support 11 through two sets of pulleys to achieve opening and closing, and the required lateral distance is short, which greatly saves space.

[0061] According to actual conditions, a device for fixing the guide pulley 13 can also be provided in the slide rail 14 to make the door body 10 be at a suitable angle between fully opened and closed.

[0062] When the movable pulley 1 3-2 and the movable pulley 2 3-3 move to the left, they move to the leftmost end of the shaft hole 5-1, and the door body 10 is in a fully open state. When the movable pulley group 3 moves to the rightmost end of the shaft hole, the door body 10 is in a closed state.

[0063] The shaft hole 5-1 is a waist-shaped hole, so that the movable pulley shaft 5-1 can move better in the shaft hole 5-1. The clamping plate 5-2 has an axial positioning function for the movable pulley shaft 3-1, so that the door body 10 is more stable and does not shake during the rotation process.

[0064] When the door body 10 is in the fully opened state, it rotates until the door body 10 is located in the groove 12 on the ground and the back plate of the door body 10 is flush with the ground 15, making it safer and more convenient for people to work and walk and transport goods.

[0065] Two sets of movable pulleys are connected in parallel, two sets of fixed pulleys are connected in parallel, the oil cylinder is extended by X, and the displacement of the rope section of wire rope 8-1 is 4X, which can save lateral space.

[0066] The present invention can also increase the number of movable pulley blocks 3 and fixed pulley blocks 6 according to actual needs.

[0067] The heavy-duty warehouse door horizontal opening and closing machine of the present invention adopts two sets of movable pulleys in parallel and two sets of fixed pulleys in parallel, the oil cylinder is extended by X, and the displacement of the rope segment of the wire rope 8-1 is 4X, which can save lateral space.

[0068] In the heavy warehouse door horizontal opening and closing machine of the present invention, the shaft hole 5-1 of the movable pulley block bracket 5 adopts a waist-shaped hole, so that the movable pulley has a large range of movement in the shaft hole 5-1, and the moving distance of the movable pulley in the waist-shaped hole can be adjusted as needed, so that the door body 10 can be opened and closed at different angles.

[0069] In the heavy-duty warehouse door horizontal opening and closing machine of the present invention, the upper and lower sides of the shaft hole 5-1 of the movable pulley block bracket 5 are provided with clamping plates 5-2, which can play a role in axial positioning of the movable pulley block bracket 5. The movable pulley block bracket 5 is fixed by the clamping plates 5-2, making the door body safer and more stable when opened or closed.

[0070] The heavy-duty warehouse door horizontal opening and closing machine of the present invention has a simple structure, ingenious design, low cost, safety and stability. During the opening and closing process of the door body 10, the space required for the rotation of the door body 10 is small, and the height requirement for the warehouse is not high; the cylinder 2-1 drives the door body 10 to rotate around the hinge support 11 through two sets of pulley groups to achieve opening and closing. The door body 10 is opened quickly and efficiently, saving time and space. It is particularly suitable for occasions where the warehouse height is not high and the lateral space is small.

[0071] Although the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A heavy-duty warehouse door opening and closing machine, comprising a frame (1), characterized in that: A driving member (2) is fixed on the frame (1), the driving member (2) is fixedly connected to one end of a pulley block via a connecting member (4), the pulley block is connected to a steering pulley (9) via a rope (8), one end of the rope (8) is fixed to the pulley block, the other end of the rope (8) is fixedly connected to one end of a door body (10), and the other end of the door body (10) is hinged to the left side of a groove (12) in the ground (15) via a hinge support (11); The driving member (2) is a cylinder (2-1), the cylinder (2-1) is horizontally mounted on a cylinder seat (2-2), and the cylinder seat (2-2) is fixed on the frame (1); The pulley block comprises a movable pulley block (3), a fixed pulley block (6), a movable pulley block bracket (5), and a fixed pulley block bracket (7); the movable pulley block (3) is slidably connected to the movable pulley block bracket (5); the fixed pulley block (6) is fixed to the fixed pulley block bracket (7); and one end of the rope (8) is fixed to the fixed pulley block bracket (7); The movable pulley block (3) comprises a movable pulley shaft (3-1), the movable pulley shaft (3-1) is rotatably connected to movable pulley 1 (3-2) and movable pulley 2 (3-3), and the movable pulley shaft (3-1) is slidably connected to a movable pulley block bracket (5); An axial hole (5-1) is provided at the position where the movable pulley shaft (3-1) is connected to the movable pulley block bracket (5), clamping plates (5-2) are provided above and below the axial hole (5-1), the movable pulley shaft (3-1) is arranged in the axial hole (5-1), and the axial hole (5-1) is a waist-shaped hole; A guide pulley (13) is provided at one end of the door body (10) close to the rope (8), and the guide pulley (13) is rollingly connected to the slide rail (14). A support block (16) is provided on the panel (10-2) of the door body (10). When the door body (10) is fully opened, the door body (10) is located in the groove (12) and the back panel (10-1) of the door body (10) is flush with the ground (15).

2. A heavy-duty warehouse door opening and closing machine according to claim 1, characterized in that: The fixed pulley block (6) comprises a fixed pulley shaft (6-1), to which fixed pulley 1 (6-2) and fixed pulley 1 (6-2) are rotatably connected, and the fixed pulley shaft (6-1) is fixed on a fixed pulley block bracket (7).

3. A heavy-duty warehouse door opening and closing machine according to claim 2, characterized in that: The rope (8) is a steel wire rope (8-1), a rope loop (8-2) is provided at the starting end of the steel wire rope (8-1), a steel wire rope segment (8-3) is provided at the end of the steel wire rope (8-1), the rope loop (8-2) is fixed on a fixed pulley block bracket (7), and the steel wire rope segment (8-3) is fixed on one end of the door body (10).

4. A heavy-duty warehouse door opening and closing machine according to claim 3, characterized in that: The starting end of the steel wire rope (8-1) is led out from the rope loop (8-2), is wound from below the movable pulley 1 (3-2) to above the movable pulley 1 (3-2), is then wound from above the movable pulley 1 (3-2) to above the fixed pulley 1 (6-2), is then wound from below the fixed pulley 1 (6-2) to below the movable pulley 2 (3-3), is then wound from above the movable pulley 2 (3-3) to above the fixed pulley 2 (6-3), is wound out from the left side of the fixed pulley 2 (6-3), and is then wound to the left side of the deflection pulley (9) until the end of the steel wire rope (8-1) is fixed to one end of the door body (10) through the steel wire rope node (8-3).

5. The heavy-duty warehouse door opening and closing machine according to claim 1 is characterized in that: The connecting member (4) comprises a connecting frame (4-1), the right portion of the connecting frame (4-1) is provided with a connecting shaft (4-2), the connecting shaft (4-2) is fixedly connected to the telescopic rod of the oil cylinder (2-1), and the left portion of the connecting frame (4-1) is fixedly connected to the movable pulley shaft (3-1).

6. The heavy-duty warehouse door opening and closing machine according to claim 1 is characterized in that: The slide rail (14) is arranged on the door grooves on both sides of the door body (10), and the slide rail (14) is a 45° arc track centered on the hinge support (11).

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