Wired transmission system for anti-collision detection electric signals of pallet fork of stacking machine

Abstract

The utility model discloses a wired transmission system for an anti-collision detection electric signal of a pallet fork of a stacking machine. The wired transmission system solves the problem of electric signal transmission failure caused by the fact that a cable is easily hooked in the telescopic process of the pallet fork. The plate type chain (6) is composed of an outer chain plate (10), an inner chain plate (12) and a chain plate pin shaft (11), the front side end (13) of the chain plate pin shaft (11) extends out of the front side of the outer chain plate (10), a communication cable embedding groove (15) is formed in the front side end (13) of the chain plate pin shaft (11), a cable (14) is embedded in the communication cable embedding groove (15), the communication cable (14) is arranged along the plate type chain (6), and the communication cable (14) is connected with the communication cable (14). The tail part of the communication cable (14) is electrically connected with the stacking machine electric controller (4), and the head part of the communication cable (14) is electrically connected with the anti-collision switch (5); and reliable transmission of anti-collision electric signals is ensured.

Description

Technical Field

[0001] The invention relates to an anti-collision detection mechanism for a stacker fork, and in particular to a wired transmission system for anti-collision detection electrical signals for a stacker fork. Background Art

[0002] In the automated warehousing system, the stacker is the core handling equipment, which can place the goods at any designated position on the high-level shelf. This function is achieved through the retractable fork mechanism on the stacker. The retractable fork mechanism is generally composed of a lower fork, a middle fork and an upper fork. The lower fork is fixed on the cargo platform of the stacker, and a middle fork is movably arranged on the top surface of the lower fork, and an upper fork is movably arranged on the top surface of the middle fork. Two plate chains are arranged between the lower fork and the upper fork, one end of which is fixed on the rear side end of the lower fork, and a supporting redirecting pulley of the plate chain is arranged on the front side end of the middle fork. The other end of the plate chain is fixed to the rear end of the upper fork, and the chain is arranged in a U shape as a whole. The power mechanism drives the middle fork to extend and retract through a gear rack mechanism, and the chain support and redirection pulley at the front end of the middle fork moves forward with the middle fork, so that the plate chain changes from a U shape to a straight shape, thereby driving the upper fork to extend synchronously with the middle fork; the other chain arrangement is consistent with the form of this chain, but in the opposite direction, and the two ends of the chain are respectively fixed to the front end of the lower fork and the front end of the upper fork, and the chain is supported by the redirection pulley at the rear end of the middle fork to make the chain present a U shape as a whole; these two chains cooperate to realize the extension and retraction of the forks to both ends of the stacker. The driving chain of the existing stacker fork adopts a plate chain, which is formed by an inner chain plate and an outer chain plate hinged by a pin shaft. The outer chain plate is fixedly connected to the pin shaft, and the inner chain plate is hinged on the pin shaft and can rotate around the pin shaft. During the extension and retraction of the fork on the stacker, due to various uncontrollable factors, the fork may hit the goods or shelves when it is extended. In order to avoid the fork from damaging the goods, anti-collision detection mechanisms are generally installed at both ends of the fork body of the upper fork. The probe in the anti-collision detection mechanism is compressed and retracted when it hits to trigger the action of the electronic detection switch. The electronic detection switch transmits the corresponding triggered electronic signal to the outside, so that the extension and retraction of the fork is stopped in time to prevent damage to the equipment and goods. There are two signal transmission methods in the prior art to transmit the electronic detection switch signal at the end of the upper fork to the inside of the equipment control box: One is through radio signal transmission, that is, a miniature wireless signal generator is set at the position of the electronic detection switch at the end of the upper fork, and a wireless signal receiver is set in the electrical control box of the cargo platform. Due to the fact that the wireless signal transmitter is out of power during operation and the wireless signal is easily shielded by metal, signal loss often occurs on site, resulting in unreliable detection and transmission; another method is to use a spiral cable for wired transmission. A spiral cable is connected between the upper fork and the cargo platform. The cable is responsible for transmitting the detection signal to the controller. Due to the large extension and retraction stroke of the fork, the spiral cable is easily hooked with the switch bracket and wears and breaks, resulting in failure of detection signal transmission; how to overcome the defect that the cable is easily hooked during the extension and retraction of the fork and realize reliable transmission of electrical signals is a problem that needs to be solved on site. Summary of the invention

[0003] The invention provides a wired transmission system for anti-collision detection electric signals of a stacker fork, which solves the technical problem of how to overcome the failure of electric signal transmission caused by easy hooking of cables during fork extension and retraction.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] A wired transmission system for anti-collision detection electric signals of a stacker fork comprises a lower fork body fixed on the stacker, a middle fork body movably arranged on the top surface of the lower fork body, an upper fork body movably arranged on the top surface of the middle fork body, a plate chain for driving the fork body to extend and retract is arranged between the lower fork body, the middle fork body and the upper fork body, a tail connecting rod is fixedly connected to the tail of the plate chain, a head connecting rod is fixedly connected to the head of the plate chain, the other end of the tail connecting rod is fixedly connected to the left end of the lower fork body, the other end of the head connecting rod is fixedly connected to the left end of the upper fork body, a chain pulley is arranged at the right end of the middle fork body, and the plate chain is U-shaped after passing around the chain pulley Arrangement: an anti-collision switch is arranged at the right end of the upper fork body, and a stacker electronic controller is arranged on the lower fork body. The plate chain is composed of an outer chain plate, an inner chain plate and a chain plate pin shaft. The outer chain plate is fixedly connected to the chain plate pin shaft, and the inner chain plate is movably hinged to the chain plate pin shaft. The front side end of the chain plate pin shaft protrudes from the front side of the outer chain plate. A communication cable embedding groove is arranged on the front side end of the chain plate pin shaft, and a communication cable is embedded in the communication cable embedding groove. The communication cable is arranged along the plate chain and keeps a relatively static state with the plate chain. The tail end of the communication cable is electrically connected to the stacker electronic controller, and the head end of the communication cable is electrically connected to the anti-collision switch.

[0006] A trumpet-shaped embedding opening is arranged at the upper end of the communication cable embedding groove; a cable quick-plug terminal is connected to the head of the communication cable, and the communication cable is connected to the stacker electronic controller through the cable quick-plug terminal.

[0007] The present invention integrates the signal transmission cable on the side of the plate chain, which can ensure the reliable transmission of the signal and avoid the hooking of the communication cable, thereby ensuring the reliable transmission of the anti-collision electric signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the present invention;

[0009] Figure 2 It is a schematic diagram of the arrangement structure of the leaf chain 6 of the present invention;

[0010] Figure 3 It is a schematic structural diagram of the plate chain 6 of the present invention;

[0011] Figure 4 Figure 3 AA section view in. DETAILED DESCRIPTION

[0012] The present invention is described in detail below in conjunction with the accompanying drawings:

[0013] A wired transmission system for anti-collision detection electrical signals of a stacker fork comprises a lower fork body 1 fixed on the stacker, a middle fork body 2 movably arranged on the top surface of the lower fork body 1, an upper fork body 3 movably arranged on the top surface of the middle fork body 2, two plate chains 6 for driving the fork bodies to extend and retract are arranged between the lower fork body 1, the middle fork body 2 and the upper fork body 3, a tail connecting rod 7 is fixedly connected to the tail of the plate chain 6, a head connecting rod 8 is fixedly connected to the head of the plate chain 6, the other end of the tail connecting rod 7 is fixedly connected to the left end of the lower fork body 1, and the head connecting rod 8 is fixedly connected to the head of the plate chain 6. The other end of the lower connecting rod 8 is fixedly connected to the left end of the upper fork body 3, and a chain pulley 9 is arranged at the right end of the middle fork body 2. The plate chain 6 is arranged in a U shape after passing the chain pulley 9. A plate chain 6 is arranged in a U shape on the front side elevation of the fork body, and another plate chain is arranged in a U shape on the rear side elevation of the fork body. The two U shapes are arranged in opposite directions. When the fork body telescopic driving mechanism pulls the chain pulley 9 to move to the right, the middle fork body and the upper fork body are guided by the plate chain 6 to move to the right relative to the lower fork body, so that the fork body is extended and arranged in a U shape. The plate chain 6 changes from a U shape to a straight shape. Similarly, another plate chain arranged on the rear side elevation of the fork body is used to guide the fork body to retract and extend to the left. An anti-collision switch 5 is arranged at the right end of the upper fork body 3, and a stacker electronic controller 4 is arranged on the lower fork body 1. The plate chain 6 is composed of an outer chain plate 10, an inner chain plate 12 and a chain plate pin 11. The outer chain plate 10 is fixedly connected to the chain plate pin 11, and the inner chain plate 12 is movably hinged to the chain plate pin 11. The front side end 13 of the chain plate pin 11 protrudes from the front side of the outer chain plate 10. A communication cable embedding groove 15 is provided on the front side end 13 of the chain plate pin shaft 11, and a communication cable 14 is embedded in the communication cable embedding groove 15. The communication cable 14 is arranged along the plate chain 6 and keeps a relatively static state with the plate chain 6. The tail of the communication cable 14 is electrically connected to the stacker electronic controller 4, and the head of the communication cable 14 is electrically connected to the anti-collision switch 5; the entire communication cable 14 is arranged integrally with the plate chain 6, and changes with the shape of the plate chain 6 without being suspended or tensioned.

[0014] A trumpet-shaped embedding opening 16 is provided at the upper end of the communication cable embedding groove 15; a cable quick-plug terminal is connected to the head of the communication cable 14, and the communication cable 14 is connected to the stacker electronic controller 4 through the cable quick-plug terminal. The communication cable 14 is embedded in the communication cable embedding groove 15 through the trumpet-shaped embedding opening 16 and is tightly held and fixed by the communication cable embedding groove 15.

[0015] The present invention integrates the communication cable into the side of the plate chain 6 between the upper fork body and the lower fork body. The plate chain is composed of an outer chain plate and an inner chain plate connected together by a chain plate pin. The present invention only extends one end of the chain plate pin to the outside of the plate chain. A communication cable embedding groove 15 is provided on the extended end of the chain plate pin to integrate the communication cable, thereby realizing the integrated setting of the plate chain 6 and the communication cable 14.

Claims

1. A wired transmission system for anti-collision detection electric signals of a stacker fork, comprising a lower fork body (1) fixed on the stacker, a middle fork body (2) movably arranged on the top surface of the lower fork body (1), an upper fork body (3) movably arranged on the top surface of the middle fork body (2), a plate chain (6) for driving the fork body to extend and retract is arranged between the lower fork body (1), the middle fork body (2) and the upper fork body (3), a tail connecting rod (7) is fixedly connected to the tail of the plate chain (6), and a plate chain (6) is arranged between the lower fork body (1), the middle fork body (2) and the upper fork body (3). The head of the fork body (2) is fixedly connected to a head connecting rod (8), the other end of the tail connecting rod (7) is fixedly connected to the left end of the lower fork body (1), the other end of the head connecting rod (8) is fixedly connected to the left end of the upper fork body (3), a chain pulley (9) is arranged at the right end of the middle fork body (2), and the plate chain (6) is arranged in a U shape after passing around the chain pulley (9); an anti-collision switch (5) is arranged at the right end of the upper fork body (3), and a stacker electronic controller (4) is arranged on the lower fork body (1), characterized in that: The plate chain (6) is composed of an outer chain plate (10), an inner chain plate (12) and a chain plate pin shaft (11); the outer chain plate (10) is fixedly connected to the chain plate pin shaft (11); the inner chain plate (12) is movably hinged to the chain plate pin shaft (11); the front side end (13) of the chain plate pin shaft (11) protrudes from the front side of the outer chain plate (10); a communication cable embedding groove (15) is provided on the front side end (13) of the chain plate pin shaft (11); a communication cable (14) is embedded in the communication cable embedding groove (15); the communication cable (14) is arranged along the plate chain (6) and maintains a relatively static state with the plate chain (6); the tail of the communication cable (14) is electrically connected to the stacker electronic controller (4); and the head of the communication cable (14) is electrically connected to the anti-collision switch (5).

2. A wired transmission system for stacker fork anti-collision detection electrical signals according to claim 1, characterized in that: A trumpet-shaped embedding opening (16) is provided at the upper end of the communication cable embedding groove (15); a cable quick-plug terminal is connected to the head of the communication cable (14); and the communication cable (14) is connected to the stacker electric controller (4) via the cable quick-plug terminal.

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