Scissor arm assembly production system

Abstract

The present invention relates to a scissor arm subassembly conveying device, and discloses a scissor arm assembly production system, which includes a double-layer conveying device arranged underground and used for conveying a pry body assembly. The upper surface of the pry body assembly is flush with the ground. Upper and lower lifting devices are respectively arranged at both ends of the double-layer conveying device. The double-layer conveying device includes an upper-layer conveying device and a lower-layer conveying device which are arranged up and down and have opposite conveying directions, so that the pry body assembly is conveyed through the double-layer conveying device and circulated between the upper-line lifting device and the lower-line lifting device. The scissor arm assembly production system of the present invention can reduce the height during assembly operations, improve comfort and the passability of workpieces.

Description

Technical Field

[0001] The invention relates to a scissor arm subassembly and conveying device, in particular to a scissor arm assembly production system. Background Art

[0002] The scissor-type aerial work platform is a widely used special equipment for aerial work. Its scissor-type mechanical structure makes the lifting platform more stable, and the wide working platform and high load-bearing capacity make the aerial work range larger and suitable for multiple people to work at the same time. It makes aerial work more efficient and safer.

[0003] The existing scissor arm assembly generally adopts the traditional plate chain line. The plate chain line uses a standard chain plate as the bearing surface, a motor reducer as the power transmission, and is pulled by a chain. The chain plate is fixed on the chain in the guide rails on both sides of the conveyor. As a load-bearing mechanism, it is widely used in the assembly and transportation of diesel engines, household appliances, food, automobiles, motorcycles, engines and other industries. In order to facilitate the passage of other equipment in the work site, some use the plate chain line flush with the ground. However, when the scissor arm is assembled, the operator needs to bend over, which has high labor intensity and low production efficiency. Some use the plate chain line above a certain height from the ground, such as 350mm above the ground, which is convenient for operation. However, during the operation, it is not convenient for other workpieces in the work site to pass through, and the passability is poor, which increases safety hazards.

[0004] Therefore, it is necessary to design a novel scissor arm assembly production system to overcome or alleviate the above-mentioned technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a scissor arm assembly production system, which can reduce the height during assembly operations and improve comfort and workpiece passability.

[0006] In order to solve the above technical problems, the present invention provides a scissor arm assembly production system, including a double-layer transmission device arranged underground and used to transport skid assemblies, the upper surface of the skid assemblies being flush with the ground, an upper-line lifting device and a lower-line lifting device being arranged at both ends of the double-layer transmission device, respectively, and the double-layer transmission device includes an upper-layer transmission device and a lower-layer transmission device which have opposite transmission directions and are arranged up and down, so that the skid assemblies are transmitted through the double-layer transmission device and circulated and transported between the upper-line lifting device and the lower-line lifting device.

[0007] In some embodiments, the skid assembly includes an assembly conveyor, on which a fork arm fixed support point and a fork arm sliding support point are arranged so as to be able to unfold the scissor arms.

[0008] In some embodiments, a fork arm fixed support seat and a fork arm sliding support seat for supporting and connecting the fork arms are arranged on the assembly conveyor, and the fork arm sliding support seat is configured to be movable along the surface of the assembly conveyor.

[0009] In some embodiments, a fixed support groove capable of being fixed with a pin shaft of the mounting hole at one end of the bottom of the scissors fork arm is arranged on the fork arm fixed support seat, and a support hole capable of being fixed with a pin shaft of the mounting hole at the other end of the bottom of the scissors fork arm is arranged on the fork arm sliding support seat.

[0010] In some embodiments, the fork arm sliding support seat is an assembly support trolley.

[0011] In some embodiments, the number of the assembly support trolleys is two.

[0012] In some embodiments, the assembly conveyor is a skateboard or a skid.

[0013] In some embodiments, the dimension of the skid body assembly in the conveying direction is equal to the station pitch.

[0014] In some embodiments, both the up-line lifting device and the down-line lifting device are lifting platforms.

[0015] In some embodiments, both the upper-layer transmission device and the lower-layer transmission device are roller beds.

[0016] Through the above technical solutions, the beneficial effects of the present invention are as follows:

[0017] The double-layer transmission device is arranged underground, and the upper surface of the skid body assembly is flush with the ground, so that it is convenient for other equipment in the working place to pass from above, realizing good passability. At the same time, it can reduce the assembly height of the scissors fork arm on the skid body assembly during the assembly operation, having good comfort. Moreover, by adopting the double-layer transmission device, in-floor flow assembly is realized, and overall underground conveying is realized, achieving double-layer functions.

[0018] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the following specific implementation, but do not constitute a limitation to the present invention. In the drawings:

[0020] Figure 1 is a schematic structural diagram of a scissors fork arm assembly production system in a specific embodiment of the present invention;

[0021] Figure 2It is a schematic structural diagram of the pry body assembly in a specific embodiment of the present invention. Among them, the shear arm is already supported on the pry body assembly;

[0022] Figure 3 is Figure 2 the schematic structural diagram along the A-A direction in;

[0023] Figure 4 is Figure 2 the schematic structural diagram along the B-B direction in.

[0024] Explanation of reference numerals

[0025] 1 Pry body assembly 11 Assembly and conveying member

[0026] 12 Fork arm fixed support seat 13 Fork arm sliding support seat

[0027] 2 Lifting device for the upper line 3 Lifting device for the lower line

[0028] 41 Upper layer transmission device 42 Lower layer transmission device Detailed implementation manners

[0029] The following further describes the implementation manners of the present invention in detail with reference to the drawings and embodiments. The detailed descriptions and drawings of the following embodiments are used to exemplarily illustrate the principle of the present invention, but cannot be used to limit the scope of the present invention. The present invention can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but including all technical solutions falling within the scope of the claims.

[0030] These embodiments of the present invention are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of the components and steps, the components of the materials, the numerical expressions and values described in these embodiments should be interpreted as merely exemplary, rather than as limitations.

[0031] It should be noted that in the description of the present invention, unless otherwise specified, "a plurality of" means greater than or equal to two; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] It should also be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", "joined", and "arranged" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0033] All terms used in the present invention have the same meanings as those understood by those of ordinary skill in the art to which the present invention pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0034] Technologies, methods, and devices known to those of ordinary skill in the relevant field may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0035] As Figures 1 to 4 , the basic embodiment of the present invention provides a scissor arm assembly production system, including a double-layer transmission device arranged underground. The double-layer transmission device is used to convey the pry body assembly 1, hoist the fork arms onto the pry body assembly 1, and assemble them into a scissor arm. Compared with the prior art in which the plate chain line is arranged at a certain height above the ground, in the present invention, the pry body assembly 1 is arranged such that its upper surface is flush with the ground. In this way, the height during the assembly operation can be reduced, facilitating the passage of other workpieces in the working area through the surface of the pry body assembly, thereby providing better passability, improving the passability of the workpieces, and enhancing the comfort of the personnel. One end of the double-layer transmission device is provided with an up-line lifting device 2, and the other end is provided with a down-line lifting device 3. The double-layer transmission device includes an upper-layer transmission device 41 and a lower-layer transmission device 42. The upper-layer transmission device 41 is located above the lower-layer transmission device 42, and the two are arranged vertically, and the upper-layer transmission device 41 and the lower-layer transmission device 42 have opposite transmission directions. Thus, under the conveying action of the double-layer transmission device, for example, the pry body assembly 1 moves from the position where the up-line lifting device 2 is located to the position where the down-line lifting device 3 is located along with the upper-layer transmission device 41. Then, the down-line lifting device 3 lowers the pry body assembly 1 to the lower-layer transmission device 42, and then moves from the position where the down-line lifting device 3 is located to the position where the up-line lifting device 2 is located. The workpieces and tooling do not need to be fixed, and the cyclic conveying can be safely completed.

[0036] In some specific embodiments, the upper transmission device 41 and the lower transmission device 42 can adopt roller beds. The roller beds are installed with rollers in the guide rails on both sides of the conveyor. Through the rolling of the rollers, the materials placed thereon are conveyed. The roller bed is a relatively common structure of the conveyor line. Based on knowing the technical solution of the present invention, those skilled in the art can select the specific type of the conveyor line according to needs, which will not be elaborated here. Moreover, the same power roller bed as that in the structural member storage area is used, and the front and rear processes can be directly connected.

[0037] In some specific embodiments, the skid assembly 1 includes an assembly conveyor 11. The assembly conveyor 11 is provided with a fork arm fixed support point and a fork arm sliding support point. The fork arm fixed support point is used to fixedly support one end of the scissors fork arm, and the fork arm sliding support point is used to support the other end of the scissors fork arm. Moreover, the fork arm sliding support point can move along the surface of the assembly conveyor 11, so that the scissors fork arm can be unfolded to facilitate the further installation of components between the fork arms.

[0038] In some specific embodiments, such as Figure 2 shown, the assembly conveyor 11 is provided with a fork arm fixed support seat 12 and a fork arm sliding support seat 13. The fork arm fixed support seat 12 can form a fork arm fixed support point for fixedly supporting one end of the scissors fork arm, and the fork arm sliding support seat 13 can form a fork arm sliding support point for fixedly supporting the other end of the scissors fork arm. When the fork arm sliding support seat 13 moves on the surface of the assembly conveyor 11, the unfolding of the scissors fork arm can be realized.

[0039] Specifically, generally, the scissors fork arm is assembled by a plurality of outer forks and a plurality of inner forks. As Figure 2 and Figure 3 shown, the fork arm fixed support seat 12 is provided with a fixed support groove. By borrowing the mounting hole at the end of the lowermost outer fork and using a pin shaft to pass through the mounting hole at the end of the outer fork and support both ends of the pin shaft on the fixed support groove, the support and fixation of the outer fork by the fork arm fixed support seat 12 are realized; as Figure 4 shown, the fork arm sliding support seat 13 is provided with a support hole. By borrowing the mounting hole at the end of the lowermost inner fork and using a pin shaft to pass through the mounting hole at the end of the inner fork and the support hole on the support seat 13, the inner fork is supported and fixed on the fork arm sliding support seat 13.

[0040] Among them, the height of the fork arm fixed support seat 12 can be designed to lift the inner fork to a suitable height for assembly, forming a fixed support point for the fork arm, facilitating the assembly operation of the scissor fork arm components, and being able to provide a comfortable height suitable for assembly operations for the operators. For example, when the height of the fork arm fixed support seat 12 is designed to be approximately 450 mm, in cooperation with the extension of the scissor fork arm, a suitable assembly operation height of 500 mm to 1400 mm can be provided, making the personnel's operation easy and the production efficiency higher. Of course, the specific height dimension of the fork arm fixed support seat 12 and the height that can reach a suitable assembly operation height in cooperation with the extension of the scissor fork arm need to be selected according to the design requirements, and specific data will not be exemplified here.

[0041] As a specific structural form of the fork arm sliding support seat 13, the fork arm sliding support seat 13 can be an assembly support trolley, such as Figure 2 and Figure 4 shown. The assembly support trolley is composed of a support seat and rollers. The roller group is installed at the bottom of the support seat, and a support hole is opened at the upper end of the support seat. By moving the fork arm sliding support seat 13, it can be used to expand the scissor fork arm and also facilitate the adjustment of the appropriate support distance for scissor fork arms of different specifications. In the preferred case, two assembly support trolleys can be used, and by adjusting the distance between the two assembly support trolleys, it can adapt to scissor fork arms of different specifications.

[0042] The fork arm sliding support seat 13 is not limited to the above structural form of the assembly support trolley, and other ways that can achieve the same purpose can also be adopted. For example, several parallel guide rails are arranged on the surface of the assembly conveyor 11, and the fork arm sliding support seat 13 adopts a structure that can cooperate with the guide rails to achieve sliding, such as a structure in which rollers, sliders, etc. that can cooperate with the guide rails to achieve sliding are installed at the bottom of the fork arm sliding support seat 13.

[0043] In some specific embodiments, the assembly conveyor 11 can be a skateboard or a skid. The skateboard is a plate member for installing and fixing the fork arm fixed support seat 12 and supporting the fork arm sliding support seat 13, and the skid is a frame structure for installing and fixing the fork arm fixed support seat 12 and supporting the fork arm sliding support seat 13.

[0044] In some specific embodiments, the online lifting device 2 and the offline lifting device 3 can be lifting platforms. A lifting platform is a hoisting machine for vertically transporting people or objects, referring to equipment for vertical transportation in logistics systems such as factories and automated warehouses. Various plane conveying devices are often installed on the lifting platform as a connecting device for conveying lines at different heights. The online lifting device 2 and the offline lifting device 3 are not limited to Figure 1 the shown scissor lift, and can also be other mechanical equipment that can achieve the lifting function, such as a guide rail type lifting platform, an aluminum alloy type lift, a telescopic cylinder type lift, etc.

[0045] In some specific embodiments, the size of the pry body assembly 1 in the conveying direction can be designed to be equal to the station spacing, facilitating the implementation of SPS (Set-piece Lean Logistics Distribution System) logistics distribution.

[0046] To better understand the technical concept of the present invention, the following will be described in combination with relatively comprehensive technical features.

[0047] As Figures 1 to 4 shown, a preferred embodiment of the present invention provides a scissor arm assembly production system, including a double-layer transmission device, an upper-line lifting device 2 and a lower-line lifting device 3. The double-layer transmission device is arranged underground and includes an upper-layer transmission device 41 and a lower-layer transmission device 42. The upper-layer transmission device 41 is located above the lower-layer transmission device 42 and is arranged vertically. The pry body assembly 1 includes an assembly conveying member 11, on which a fork arm fixed support seat 12 and a fork arm sliding support seat 13 for placement are provided. A fixed support groove is provided on the fork arm fixed support seat 12, and a support hole is provided on the fork arm sliding support seat 13. The fork arm sliding support seat 13 can be an assembly support trolley. One end of the double-layer transmission device is arranged with the upper-line lifting device 2, and the other end is arranged with the lower-line lifting device 3. The upper-line lifting device 2 and the lower-line lifting device 3 can be lifting platforms.

[0048] Referring to Figure 1 shown, a working process of the scissor arm assembly production system of the present invention is as follows:

[0049] Place the pry body assembly 1 on the upper-line lifting device 2. The upper-line lifting device 2 moves the pry body assembly 1 to a station close to the upper-line lifting device 2. Lift the inner fork at the bottommost position onto the line by a hoisting device and lift the inner fork. Pass a pin through the mounting hole at the end of the inner fork and the fixed support groove of the fork arm fixed support seat 12. Then lift the outer fork at the bottommost position onto the line by a hoisting device and lift the outer fork. Pass a pin through the mounting hole at the end of the outer fork and the support hole of the fork arm sliding support seat 13 to complete the scissor arm on-line. Among them, the hoisting device can be a hoisting device such as a crane.

[0050] The upper-layer transmission device 41 moves, driving the pry body assembly 1 to a further station, and alternately hoisting the inner forks and outer forks at other positions in turn by a hoisting device.

[0051] By moving the fork arm sliding support seat 13, the scissor arm can be unfolded, creating an operating space for further installing components between the scissor arms.

[0052] After completing the assembly of the scissor arm, lift the assembled scissor arm by a hoisting device and connect it to the chivalrous path process.

[0053] The empty dolly assembly 1 descends to a certain height with the offline lifting device 3 and is conveyed back to the position of the online lifting device 2 through the lower-layer transmission device 42. Then, the online lifting device 2 lifts the dolly assembly 1 again and conveys it to the upper-layer transmission device 41 to achieve cyclic conveyance.

[0054] Among them, in the entire scissor arm assembly production system, the number of dolly assemblies 1 arranged is selected according to specific designs, such as according to the number of workstations arranged on the upper-layer transmission device 41 and the lower-layer transmission device 42, to meet the requirements of operation efficiency and operation frequency.

[0055] If there are abnormal components that do not meet the quality requirements, the dolly assembly 1 of the scissor arm carrying the abnormal components can be conveyed back to the position of the online lifting device 2 through the lower-layer transmission device 42 by the offline lifting device 3 for re-assembly.

[0056] Compared with the existing plate chain ground conveyance, the double-layer transmission device of the present invention uses double-layer roller beds buried underground, which can reduce the height during assembly operations, improve personnel comfort and workpiece passability. The double-layer transmission device uses double-layer roller beds, enabling the workpieces to be placed facing upward. Each time the empty dolly assembly 1 is transported back to the initial position, the double-layer roller beds are fully utilized. It not only realizes on-ground flow assembly but also realizes underground overall conveyance. Although the upper and lower layers can have the same configuration, it achieves double-layer dual functions.

[0057] At the assembly conveyance member 11, a fork arm sliding support seat 13 is arranged, which can realize the unfolding of the scissor arm, thus creating an operation space for further installing components between the scissor arms. At the assembly conveyance member 11, a fork arm fixed support seat 12 is fixedly installed, which is convenient for positioning and facilitates accurate alignment of the logistics connection of the upper and lower processes. The fork arm sliding support seats 13 are arranged in pairs to adapt to the assembly of fork arms with different widths and lengths, improving the flexibility rate of the tooling; at the same time, it can also meet the stretching of any component and is convenient for the layout operation of the multi-layer spiral wire harness and pipeline inside the scissor arm.

[0058] In the fixed support groove of the fork arm fixed support seat 12 and the support hole of the fork arm sliding support seat 13, a working bushing, such as a rubber bushing, is set as a process fulcrum, and no paint damage will occur during the operation process.

[0059] The dimensions of the dolly assembly 1 along the conveying direction, the dimensions of the online lifting device 2, and the dimensions of the offline lifting device 3 are designed according to the workstation spacing dimensions to facilitate seamless docking of intelligent logistics SPS distribution.

[0060] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0061] In addition, it should be noted that each of the specific technical features described in the above specific embodiments can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0062] In addition, any combination can be made between various different embodiments of the present invention, as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. A production system for scissor arm assembly, characterized in that, It includes a double-layer transmission device arranged underground and used for transporting the skid assembly (1). The upper surface of the skid assembly (1) is flush with the ground. The upper-line lifting device (2) and the lower-line lifting device (3) are respectively arranged at both ends of the double-layer transmission device. And the double-layer transmission device includes an upper-layer transmission device (41) and a lower-layer transmission device (42) which are arranged up and down and have opposite transmission directions, so that the skid assembly (1) is transported through the double-layer transmission device and circulated between the upper-line lifting device (2) and the lower-line lifting device (3); wherein, the skid assembly (1) includes an assembly conveying member (11), and a fork arm fixed support point and a fork arm sliding support point are arranged on the assembly conveying member (11) to be able to unfold the scissors fork arm.

2. The production system for scissor arm assembly according to claim 1, characterized in that, A fork arm fixed support seat (12) and a fork arm sliding support seat (13) for supporting and connecting the fork arm are arranged on the assembly conveying member (11), and the fork arm sliding support seat (13) is configured to be able to move along the surface of the assembly conveying member (11).

3. The production system for scissor arm assembly according to claim 2, characterized in that, A fixed support groove capable of being fixed with a pin shaft of the mounting hole at one end of the bottom of the scissors fork arm is arranged on the fork arm fixed support seat (12), and a support hole capable of being fixed with a pin shaft of the mounting hole at the other end of the bottom of the scissors fork arm is arranged on the fork arm sliding support seat (13).

4. The production system for scissor arm assembly according to claim 2, characterized in that, The fork arm sliding support seat (13) is an assembly support trolley.

5. The production system for scissor arm assembly according to claim 4, characterized in that, The number of the assembly support trolleys is two.

6. The production system for scissor arm assembly according to claim 1, wherein The assembly conveying member (11) is a slide plate or a skid.

7. The production system for scissor arm assembly according to any one of claims 1 to 6, characterized in that, The dimension of the skid assembly (1) in the conveying direction is equal to the station pitch.

8. The production system for scissor arm assembly according to any one of claims 1 to 6, characterized in that, Both the upper-line lifting device (2) and the lower-line lifting device (3) are lifting platforms.

9. The production system for scissor arm assembly according to any one of claims 1 to 6, characterized in that, Both the upper-layer transmission device (41) and the lower-layer transmission device (42) are roller beds.

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