A high-precision AGV forklift for transporting goods on production lines

Abstract

The present invention discloses a high-precision AGV forklift for transporting cargo on a production line in the technical field of production line transportation equipment, comprising: an AGV forklift main body, the high-precision AGV forklift also comprising: a mounting block installed under the cargo fork, a slot is provided under the mounting block, a moving part is slidably inserted in the slot, a contact part is provided under the moving part, a mounting slot is provided on the AGV forklift main body, a support rod is slidably inserted in the mounting slot, a spring is provided between the support rod and the mounting slot, a telescopic mechanism is provided on the outer end of the support rod, a pressing member is provided on the moving end of the telescopic mechanism, and a contact switch electrically connected to the telescopic mechanism is provided on the contact member. In the present application, when the distance between the cargo fork and the cargo placement area is small, the contact switch on the contact member will contact the placement area, turn on the power of the telescopic mechanism, and contact the door frame with the pressing member to reduce the falling speed of the cargo fork when it contacts the placement area.

Description

Technical Field

[0001] The present invention relates to the technical field of production line transportation equipment, and in particular to a high-precision AGV forklift used for transporting goods on a production line. Background Art

[0002] In the packaging production line, AGV forklifts are used to transport goods. The goods are lifted up and moved by the forks of the AGV forklifts. The goods are put down after being moved to the placement area.

[0003] However, when the AGV forklift is stacking the goods to the placement area, because the forks of the AGV forklift generally descend at a constant speed, there will be a certain impact force when the goods fall and contact the placement area, which will affect the transported goods. Summary of the invention

[0004] The purpose of the present invention is to provide a high-precision AGV forklift for transporting goods on a production line, so as to solve the problem that the forks of the AGV forklift proposed in the above background technology generally descend at a constant speed, so there will be a certain impact force when the goods fall and contact the placement area.

[0005] To achieve the above object, the present invention provides the following technical solution: a high-precision AGV forklift for transporting goods on a production line, comprising: an AGV forklift body, a portal frame installed on the AGV forklift body, a fork slidably provided on the portal frame, a driving mechanism for driving the fork to move up and down on the portal frame, and the high-precision AGV forklift further comprising: a mounting block installed under the fork;

[0006] A slot is provided below the mounting block, a moving piece is slidably inserted into the slot, an elastic piece is provided on the moving piece to support the moving piece, and a contact piece is provided below the moving piece;

[0007] The AGV forklift body is provided with a mounting groove extending along the moving direction of the fork, a support rod is slidably inserted into the mounting groove, a spring is provided between the support rod and the mounting groove, a telescopic mechanism is provided on the outer end of the support rod, and a pressing piece for fitting with the portal frame is provided on the moving end of the telescopic mechanism;

[0008] The contact member is provided with a contact switch electrically connected to the telescopic mechanism to control the telescopic mechanism to be powered on, drive the pressing member to move and contact the portal frame, and make the pressing member below the connection area between the fork and the portal frame to reduce the descending speed of the fork.

[0009] Preferably, a mounting opening is provided at the connection portion between the fork and the mounting block, the mounting block is slidably inserted into an inner cavity of the mounting opening, and an elastic element connected to the mounting block is provided in the mounting opening to drive the mounting block to move into the mounting opening.

[0010] Preferably, a slot is provided at the connection portion between the moving part and the contact part, a sleeve is provided in the slot, a push rod connected to the contact part is slidably inserted in the sleeve to drive the contact part away from the moving part, an electromagnetic device is provided in the sleeve, and the push rod is a magnetic metal rod;

[0011] Among them, conductive parts that fit each other are provided on the installation block and in the installation opening, and two groups of the conductive parts are electrically connected to the electromagnetic device and the external power supply respectively.

[0012] Preferably, a touch switch and an electromagnet located inside the moving part are provided in the slot, the touch switch is electrically connected to the electromagnet and an external power supply, and the moving part is a magnetic metal part;

[0013] Wherein, the electromagnet is electrically connected to the conductive member to control the electromagnet to be powered off.

[0014] Preferably, the side wall of the support rod is provided with an airbag which fits with the inner wall of the mounting groove, and the contact piece is an inflatable airbag, which is connected to the airbag through a connecting tube.

[0015] Preferably, a rubber block is provided on the side of the pressing member facing the portal frame, a cavity is provided in the rubber block, the installation groove is filled with liquid, and the installation groove is connected with the cavity through a conduit.

[0016] Preferably, the driving mechanism comprises a driving member, a guide wheel and a lifting member;

[0017] Wherein, the driving member and the guide wheel are both installed on the portal frame, the output end of the driving member is connected to one end of the lifting member, and the other end of the lifting member is connected to the fork after being guided by the guide wheel. A blocking member is slidably provided on the portal frame, which has the same moving path as the fork and is located above the guide wheel. A pressure sensor is provided under the blocking member, and the pressure sensor is connected to the controller. The controller is electrically connected to the driving member.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: in the present application, when the distance between the fork and the cargo placement area is small, the contact switch on the contact piece will contact the placement area, turn on the power of the telescopic mechanism, and bring the pressing piece into contact with the portal frame. The pressure of the pressing piece in contact with the portal frame increases the friction resistance of the fork when it falls, which is used to reduce the falling speed of the fork when it contacts the placement area, greatly reduce the impact force generated when the cargo falls to the placement area, and protect the cargo. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2This is a schematic diagram of the connection structure between the portal frame and the fork of the present invention;

[0021] Figure 3 This is an enlarged schematic diagram of the structure at A of the present invention;

[0022] Figure 4 This is a schematic diagram of the connection structure between the mounting block and the moving part of the present invention;

[0023] Figure 5 It is an enlarged schematic diagram of the structure at B of the present invention.

[0024] In the figure: 1. AGV forklift body; 2. gantry; 3. driving mechanism; 31. driving part; 32. guide wheel; 33. lifting part; 4. fork; 5. controller; 6. mounting block; 7. mounting port; 8. mounting slot; 9. support rod; 10. telescopic mechanism; 11. pressing part; 12. airbag; 13. connecting pipe; 14. guide tube; 15. moving part; 16. contact part; 17. sleeve; 18. push rod; 19. elastic part; 20. conductive part; 21. touch switch; 22. electromagnet; 23. blocking part. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0026] Embodiment 1:

[0027] See also Figure 1 and Figure 2 A high-precision AGV forklift for transporting goods on a production line comprises: an AGV forklift body 1, a portal frame 2 is installed on the AGV forklift body 1, a fork 4 is slidably provided on the portal frame 2, and a driving mechanism 3 for driving the fork 4 to move up and down is provided on the portal frame 2.

[0028] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The fork 4 is provided with a mounting opening 7, a mounting block 6 is slidably inserted into the inner cavity of the mounting opening 7, and an elastic element connected to the mounting block 6 is provided in the mounting opening 7;

[0029] A slot is provided below the mounting block 6, a moving member 15 is slidably inserted into the slot, an elastic member 19 is provided between the moving member 15 and the slot, and a contact member 16 is provided below the moving member 15;

[0030] Among them, a groove is provided at the connecting portion between the moving part 15 and the contact part 16, and a sleeve 17 is provided in the groove. A push rod 18 connected to the contact part 16 is slidably inserted in the sleeve 17. The push rod 18 moves up and down in the sleeve 17, and moves the contact part 16 up and down. An electromagnetic device (i.e., an electromagnet) is provided in the sleeve 17. The push rod 18 is a magnetic metal rod (a metal material that can be adsorbed by an electromagnet, such as iron). Conductive parts 20 that fit each other are provided on the mounting block 6 and in the mounting port 7. The two groups of conductive parts 20 are electrically connected to the electromagnetic device and the external power supply through wires, respectively.

[0031] See also Figure 2 and Figure 3 A mounting groove 8 is provided on the AGV forklift body 1, in which a support rod 9 is slidably inserted (the moving direction of the support rod 9 in the mounting groove 8 is the same as the moving direction of the fork 4), a spring is provided between the support rod 9 and the mounting groove 8, and a telescopic mechanism 10 is provided on the outer end of the support rod 9 (the telescopic mechanism 10 includes a mounting sleeve and a pressure rod slidably inserted in the mounting sleeve, an electromagnet is provided in the inner cavity of the mounting sleeve, the pressure rod is a magnet, and the magnetic poles of the side of the pressure rod close to the electromagnet are the same, which will generate a repulsive force, and a reset spring is installed in the mounting sleeve and between the pressure rod), a pressing piece 11 is provided on the moving end of the telescopic mechanism 10, and a contact switch is provided under the contact piece 16, and the contact switch is electrically connected to the telescopic mechanism 10 through a wire.

[0032] In summary, in the process of cargo handling, the AGV forklift body 1 moves to the cargo placement area, uses the fork 4 to contact the pallet under the cargo, and drags up the pallet and the cargo; when the fork 4 drags up the cargo, the cargo will squeeze the mounting block 6, causing the mounting block 6 to move downward, and the two sets of conductive parts 20 to be out of contact, so that the electromagnetic device is powered off, and the push rod 18 loses its magnetic adsorption. Under the action of gravity, the push rod 18 moves downward with the contact piece 16; then the AGV forklift body 1 moves to move the cargo to the stacking area, and the driving mechanism 3 moves the fork 4 downward to move the cargo downward for placement; when the fork 4 approaches the stacking area (the distance between the two is small), the placement area contacts the contact switch, turns on the power of the telescopic mechanism 10, and moves with the pressing piece 11 to contact the door frame 2 (the contact area is below the connection area between the fork 4 and the portal frame 2); the fork 4 continues to move downward, and will move downward with the pressing piece 11 and the support rod 9. The pressure of the pressing piece 11 in contact with the portal frame 2 increases the friction force on the fork 4 when it falls, which is used to reduce the falling speed of the fork 4, so that the impact force generated by the goods falling on the placement area will not be too large, and the goods are protected; after the placement is completed, the AGV forklift body 1 moves, and the fork 4 is removed from under the pallet. The pressure on the contact switch disappears, the telescopic mechanism 10 is de-energized, the pressing piece 11 is reset, and the pressure on the mounting block 6 disappears. Under the action of the elastic element, it moves upward and resets, which makes the two groups of conductive members 20 contact, so that the electromagnetic device is energized to generate magnetic force, and the push rod 18 is pulled upward to move the contact member 16 upward and reset.

[0033] Furthermore, a touch switch 21 and an electromagnet 22 are provided in the slot, and the touch switch 21 and the electromagnet 22 are located above the moving part 15. The touch switch 21 is electrically connected to the electromagnet 22 and an external power supply through a wire. The moving part 15 is a magnetic metal part (a metal material that can be adsorbed by the electromagnet 22, such as iron), and the electromagnet 22 is electrically connected to the conductive part 20.

[0034] It should be noted that, when the contact piece 16 contacts the placement area and the fork 4 continues to move downward, the movable piece 15 will move into the slot, squeezing the touch switch 21, so that the electromagnet 22 is energized to generate magnetic force for adsorbing the movable piece 15, fixing the movable piece 15 in the slot, preventing the contact piece 16 from moving downward and resetting, making it easy for the fork 4 to be removed from under the pallet.

[0035] Furthermore, the side wall of the support rod 9 is provided with an airbag 12 that fits with the inner wall of the mounting groove 8, and the contact piece 16 is an inflatable airbag, which is connected to the airbag 12 through a connecting tube 13; in the process of the contact piece 16 contacting the placement area, the inflatable airbag is squeezed, so that the air inside the airbag enters the airbag 12, causing the airbag to expand, increasing the pressure of contact with the inner wall of the mounting groove 8 (i.e., increasing the friction), which is used to increase the difficulty of moving the support rod 9 downward, and as the downward movement of the fork 4 increases, the degree of expansion of the airbag 12 will increase, so that the friction between the support rod 9 and the mounting groove 8 will increase, thereby slowing down the downward movement of the fork 4.

[0036] Furthermore, a rubber block is provided on the side of the pressing member 11 facing the portal frame 2, a cavity is opened in the rubber block, the mounting groove 8 is filled with liquid, and the mounting groove 8 is connected to the cavity through a conduit 14; when the support rod 9 moves downward, the liquid inside the mounting groove 8 is added to the cavity through the conduit 14, so that the rubber block expands, the contact pressure between the rubber block and the portal frame 2 is increased (i.e., the friction force is increased), and the falling speed of the fork 4 is further reduced.

[0037] Embodiment 2:

[0038] As a preferred option, see Figure 1 , Figure 2 and Figure 5 , the driving mechanism 3 includes a driving member 31, a guide wheel 32 and a lifting member 33;

[0039] Among them, the driving member 31 and the guide wheel 32 are both installed on the portal frame 2, the output end of the driving member 31 is connected to one end of the lifting member 33, and the other end of the lifting member 33 is connected to the fork 4 after being guided by the guide wheel 32. A blocking member 23 is slidably provided on the portal frame 2, and the blocking member 23 can slide up and down. The blocking member 23 is above the guide wheel 32, and a pressure sensor is provided below the blocking member 23. The pressure sensor is electrically connected to the controller 5 (the controller 5 refers to a PLC controller, and the specific model is TPC24-24TD), and the controller 5 is electrically connected to the driving member 31;

[0040] It should be noted that when the fork 4 descends more slowly due to the obstruction of the pressing member 11, the lifting member 33 will be relaxed (because the working speed of the driving mechanism 3 remains unchanged), and the lifting member 33 will arch and contact the pressure sensor. After receiving the information, the controller 5 controls the driving member 31 to slow down, so as to reduce the falling speed of the fork 4.

[0041] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision AGV forklift for transporting goods on a production line, comprising: An AGV forklift body (1), wherein a portal frame (2) is mounted on the AGV forklift body (1), a fork (4) is slidably mounted on the portal frame (2), and a driving mechanism (3) for driving the fork (4) to move up and down is disposed on the portal frame (2), characterized in that: the high-precision AGV forklift further comprises: a mounting block (6) mounted below the fork (4); A slot is provided below the mounting block (6), a moving member (15) is slidably inserted into the slot, an elastic member (19) is provided on the moving member (15) to support the moving member (15), and a contact member (16) is provided below the moving member (15); The AGV forklift body (1) is provided with a mounting groove (8) extending along the moving direction of the fork (4), a support rod (9) is slidably inserted into the mounting groove (8), a spring is provided between the support rod (9) and the mounting groove (8), a telescopic mechanism (10) is provided on the outer end of the support rod (9), and a pressing piece (11) for fitting with the portal frame (2) is provided on the moving end of the telescopic mechanism (10); The contact member (16) is provided with a contact switch electrically connected to the telescopic mechanism (10) to control the telescopic mechanism (10) to be powered on and operated, driving the pressing member (11) to move and contact the portal frame (2), and making the pressing member (11) below the connection area between the fork (4) and the portal frame (2), so as to reduce the descending speed of the fork (4); A mounting opening (7) is provided at the connection portion between the cargo fork (4) and the mounting block (6), the mounting block (6) is slidably inserted into the inner cavity of the mounting opening (7), and an elastic element connected to the mounting block (6) is provided in the mounting opening (7) to drive the mounting block (6) to move into the mounting opening (7); A slot is provided at a connection portion between the moving member (15) and the contact member (16), a sleeve (17) is provided in the slot, a push rod (18) connected to the contact member (16) is slidably inserted in the sleeve (17) to drive the contact member (16) away from the moving member (15), an electromagnetic device is provided in the sleeve (17), and the push rod (18) is a magnetic metal rod; Wherein, conductive members (20) that fit together are provided on the mounting block (6) and in the mounting opening (7), and two groups of conductive members (20) are electrically connected to the electromagnetic device and the external power supply respectively; A touch switch (21) and an electromagnet (22) located inside the moving part (15) are arranged in the slot, the touch switch (21) and the electromagnet (22) being electrically connected to an external power supply, and the moving part (15) is a magnetic metal part; The electromagnet (22) is electrically connected to the conductive member (20) to control the electromagnet (22) to be powered off; The side wall of the support rod (9) is provided with an air bag (12) which is in contact with the inner wall of the mounting groove (8); the contact piece (16) is an inflatable air bag, and the inflatable air bag is connected to the air bag (12) via a connecting pipe (13); A rubber block is provided on the side of the pressing piece (11) facing the door frame (2), a cavity is provided in the rubber block, the installation groove (8) is filled with liquid, and the installation groove (8) is connected to the cavity via a conduit (14).

2. A high-precision AGV forklift for transporting goods on a production line according to claim 1, characterized in that: The driving mechanism (3) comprises a driving member (31), a guide wheel (32) and a lifting member (33); The driving member (31) and the guide wheel (32) are both mounted on the portal frame (2); the output end of the driving member (31) is connected to one end of the lifting member (33); the other end of the lifting member (33) is connected to the fork (4) after being guided by the guide wheel (32); a blocking member (23) is slidably provided on the portal frame (2) and has the same moving path as the fork (4) and is located above the guide wheel (32); a pressure sensor is provided below the blocking member (23); the pressure sensor is connected to the controller (5); and the controller (5) is electrically connected to the driving member (31).

Images