A guide rail retractable transfer device

Abstract

The application discloses a guide rail retractable transfer device and belongs to the technical field of pyrotechnics production. The device comprises supporting shafts, a transfer assembly, an inlet-outlet cylinder, butt joint shafts and a guide reset mechanism. The two supporting shafts are fixedly connected in parallel on the workbench surface outside the blast-resistant wall. The guide reset mechanism is fixedly installed on the workbench surface inside the blast-resistant wall. The two butt joint shafts are fixedly connected with the movable part above the guide reset mechanism. The orientation of the butt joint shafts corresponds to that of the supporting shafts. The transfer assembly is matched with the butt joint shafts through rollers. The transfer assembly moves left and right along the axial direction of the butt joint shafts under the pushing of the inlet-outlet cylinder. The compression spring in the guide reset mechanism is in a pre-compression state when the butt joint shafts are in a retracted state. When the butt joint shafts are in an elongation butt joint state, the butt joint shafts are driven by the compression spring to realize butt joint with the supporting shafts under the guidance of the guide reset mechanism. The application can solve the problems of limited movement load and complex butt joint mechanism caused by the gap between the inner and outer guide rails of the blast-resistant room.

Description

Technical Field

[0001] This invention relates to the field of pyrotechnics production technology, specifically to a retractable transfer device with a guide rail for entering and exiting an explosion-proof chamber. Background Technology

[0002] In the production of pyrotechnics, such as ammunition loading and assembly, hazardous processes are isolated by human-machine interaction and placed in blast-proof rooms or individually isolated blast-proof enclosures. These processes include charge pressing, cartridge case closing, and electrical performance testing. To improve production efficiency and automation, a common practice is to install transfer windows for ammunition entry and exit in the blast-proof enclosure or blast-proof room, and to install automatically controlled blast-proof doors on these windows. When the blast-proof doors are open, the blast-proof enclosure or blast-proof room is connected to the outside; when the blast-proof doors are closed, the blast-proof enclosure or blast-proof room is isolated from the outside.

[0003] Because the blast-resistant door separates the inner and outer guide rails, it affects the stability of the transfer device's operation and endangers the safety of the pyrotechnic product transfer process. To address this issue, one approach is to design the transfer device as a cantilever structure, which limits the weight of the transferred products and the length of the extended transfer platform. Another approach is to design a specialized docking mechanism to eliminate the gap between the inner and outer guide rails; however, this design is complex and does not improve production efficiency. Summary of the Invention

[0004] In view of this, the present invention provides a transfer device with retractable guide rails, which can solve the problems of restricted motion load caused by the gap between the inner and outer guide rails when entering and exiting the explosion-proof room, as well as the complexity of the docking mechanism.

[0005] A retractable guide rail transfer device includes a support shaft, a transfer assembly, an inlet / outlet cylinder, a docking shaft, and a guide reset mechanism.

[0006] Two support shafts are fixedly connected parallel to each other on the workbench outside the blast wall; the guide reset mechanism is fixedly installed on the workbench inside the blast wall, and two docking shafts are fixedly connected to the movable part above the guide reset mechanism, with the orientation of the docking shafts corresponding to the support shafts; the transfer assembly and the docking shaft are connected by rollers, and the transfer assembly moves left and right along the axis of the docking shaft under the push of the inlet and outlet cylinders; the compression spring in the guide reset mechanism is in a pre-compressed state when the docking shaft is retracted, and when the docking shaft is extended and docked, the docking shaft is driven by the compression spring under the guidance of the guide reset mechanism to realize the docking of the docking shaft and the support shaft, and the two together form a linear guide rail for the movement of the transfer assembly.

[0007] Furthermore, it also includes an external fixed platform and a hydraulic buffer. The external fixed platform is fixedly connected to the workbench outside the explosion-proof wall, and the hydraulic buffer is installed on the end face of the external fixed platform facing the transfer device.

[0008] Furthermore, the transfer assembly includes a transfer assembly mounting plate, guide pulley mounting seats, guide pulleys, limiting rollers, mounting seats, limiting rollers, and a transfer assembly limiting plate; four guide pulley mounting seats are symmetrically fixed below the transfer assembly mounting plate, and four guide pulleys are respectively installed in mounting grooves on one side of the four guide pulley mounting seats and locked with nuts; four limiting roller mounting seats are respectively installed in mounting grooves on the other side of the guide pulley mounting seats, and four limiting rollers are respectively installed on the four limiting roller mounting seats; the transfer assembly limiting plate is installed upside down at the middle position below the transfer assembly mounting plate by screws, and is used to limit contact with the hydraulic buffer when the transfer assembly mounting plate extends.

[0009] Furthermore, the guide reset mechanism consists of two sets, each including a guide shaft, an inter-shaft connecting block, a guide slider, a slider mounting seat, a guide shaft limiting plate, a blocking plate, a limiting buffer block, a compression spring, a spring guide shaft, and a spring limiting bracket;

[0010] The guide slider is fixedly installed on the workbench inside the explosion-proof wall by a slider mounting seat. The guide shaft and the guide slider are slidably engaged by a hole-shaft engagement. Guide shaft limiting plates are fixedly installed at both ends of the guide shaft.

[0011] The guide shaft is fixedly connected to the docking shaft via an inter-shaft connecting block. One end of the docking shaft is connected to a positioning pin, and the other end is a stepped shaft used to connect to a blocking plate. A limiting buffer block is installed between the blocking plate and the guide pulley mounting seat. The spring limiting bracket is fixedly installed on the worktable behind the slider mounting seat. The spring limiting bracket has a through hole for the spring guide shaft to pass through. The spring guide shaft is fixedly connected to the rear end of the docking shaft and forms a stepped surface at the connection. A compression spring is fitted onto the spring guide shaft, which passes through the through hole on the spring limiting bracket. Both ends of the compression spring are in contact with the stepped surface and the spring limiting bracket. When the transfer assembly is at the right extreme position, the compression spring is in a pre-compressed state under the action of the inlet and outlet cylinders. The inter-shaft connecting blocks on the two sets of guide reset mechanisms are connected together by a limiting shaft.

[0012] Furthermore, guide holes are machined on the end faces of the support shaft and the docking shaft opposite to each other, and positioning pins are fixedly connected to the end faces of the docking shaft and the support shaft opposite to each other. The support shaft and the docking shaft are positioned by the cooperation of the positioning pins and the guide holes during the docking process.

[0013] Beneficial effects:

[0014] 1. In the transfer device of the present invention, the transfer component moves towards the workbench outside the blast wall under the push of the inlet and outlet cylinders. At the same time, the docking shaft below the transfer component moves synchronously under the guidance and push of the guide and reset mechanism, providing support for the transfer component until the docking shaft and the support shaft are connected to form a complete guide rail. This allows the two originally disconnected guide rails to automatically connect into a continuous guide rail, enabling the transfer device to move freely in and out and complete the automatic transfer of internal and external materials. Therefore, it solves the problem that the discontinuity of the guide rail caused by the presence of blast doors in blast-proof enclosures or blast-proof rooms will continue to affect product transfer. It realizes the automation of entering and exiting blast-proof enclosures and blast-proof rooms, realizes the human-machine isolation of dangerous processes, and thus improves the safety of the ammunition production process.

[0015] 2. The present invention provides an external fixed platform and a hydraulic buffer on the workbench outside the explosion-proof wall. The hydraulic buffer is installed on the end face of the external fixed platform facing the transfer device. The hydraulic buffer is used for buffering and limiting when the transfer component is pushed out, and can also buffer the impact force generated by the transfer component during the transfer process to ensure the safety of the production operation.

[0016] 3. During the docking process between the docking shaft and the support shaft, the transfer device of the present invention moves synchronously with the symmetrical axis below it. The guide and reset mechanism below the docking shaft provides support for the docking shaft and the transfer device, which solves the problem of excessive cantilever in the traditional transfer method and makes the transfer device move more smoothly in and out of the explosion-proof cover or explosion-proof room.

[0017] 4. The present invention has two sets of guide reset mechanisms. The inter-shaft connecting blocks on the two sets of guide reset mechanisms are connected together by a limiting shaft. After docking, the two docking shafts, the two inter-shaft connecting blocks and the two guide shafts are all rigidly connected, so they can withstand a large transport load.

[0018] 5. The transfer assembly of the present invention is provided with a limiting roller mounting seat and a limiting roller. The limiting roller mounting seat is installed in the mounting groove on the other side of the guide pulley mounting seat, and the limiting roller is installed on the limiting roller mounting seat to limit the movement of the transfer device mounting plate in the vertical direction. Attached Figure Description

[0019] Figure 1 is a general schematic diagram of the explosion-proof room when it is closed according to an embodiment of the present invention;

[0020] Figure 2 is a general schematic diagram of the explosion-proof room when it is opened according to an embodiment of the present invention;

[0021] Figure 3 is a partial front view of an embodiment of the present invention;

[0022] Figure 4 is a partial left view of an embodiment of the present invention;

[0023] Figure 5 is a partial right view of an embodiment of the present invention.

[0024] Among them, 1-external fixed platform, 2-hydraulic buffer, 3-support shaft, 4-positioning pin, 5-connection shaft, 6-limit shaft, 7-guide shaft limit plate, 8-guide shaft, 9-transfer component limit plate, 10-cylinder connecting seat, 11-T-type cylinder connector, 12-inlet / outlet cylinder, 13-shaft connecting block, 14-guide slider, 15-slider mounting seat, 16-guide pulley, 17-guide pulley mounting seat, 18-limit roller mounting seat, 19-limit roller, 20-transfer component mounting plate, 21-blocking plate, 22-limit buffer block, 23-compression spring, 24-spring guide shaft, 25-spring limit bracket, 26-explosion-proof door lifting cylinder, 27-cylinder mounting seat, 28-explosion-proof door mounting base plate, 29-explosion-proof door. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] As shown in Figures 1 and 2, the present invention provides a transfer device with a retractable guide rail. This device is installed on two worktables, one inside and one outside the blast-resistant wall. Two parallel support shafts 3 are fixed on the worktable outside the blast-resistant wall. An outer fixed platform 1 is connected to the worktable by screws. A hydraulic buffer 2 is installed on the outer fixed platform 1 for buffering and limiting the extension of the transfer assembly. One end of the support shaft 3 near the inside of the wall has a guide hole passing through its axis, used for positioning the transfer assembly with the docking shaft 5 via a pin 4 when extended.

[0027] Two sets of guide and reset mechanisms are arranged on the workbench inside the blast-resistant wall. A transfer assembly is arranged above the guide and reset mechanism, and the inlet and outlet cylinder 12 is located behind the transfer assembly.

[0028] As shown in Figure 3, the guide reset mechanism includes a guide shaft 8, an inter-shaft connecting block 13, a guide slider 14, a slider mounting base 15, a guide shaft limiting plate 7, a blocking plate 21, a limiting buffer block 22, a compression spring 23, a spring guide shaft 24, and a spring limiting bracket 25.

[0029] The guide slider 14 is fixedly installed on the workbench inside the explosion-proof wall via the slider mounting base 15. The guide shaft 8 and the guide slider 14 are slidably engaged by a hole-shaft fit. A guide shaft limiting plate 7 is fixedly connected to each end of the guide shaft 8. The function of the guide shaft limiting plate 7 is to prevent the guide shaft 8 from coming out of the hole of the guide slider 14 during movement, as shown in Figure 5.

[0030] The guide shaft 8 is fixedly connected to the docking shaft 5 above it via the inter-shaft connecting block 13. One end of the docking shaft 5 is connected to the positioning pin 4, and the other end is a stepped shaft used to connect the blocking plate 21. A limiting buffer block 22 is installed between the blocking plate 21 and the guide pulley mounting seat 17. The spring limiting bracket 25 is fixedly installed on the worktable behind the slider mounting seat 15. The spring limiting bracket 25 has a through hole for the spring guide shaft 24 to pass through. The spring guide shaft 24 is fixedly connected to the rear end of the docking shaft 5 and forms a stepped surface at the connection. The compression spring 23 is fitted on the spring guide shaft 24. The spring guide shaft 24 passes through the through hole on the spring limiting bracket 25. Both ends of the compression spring 23 are in contact with the stepped surface and the spring limiting bracket 25. When the transfer assembly is at the right limit position, the compression spring 23 is in a pre-compressed state under the action of the inlet and outlet cylinder 12. The inter-shaft connecting blocks 13 on the two sets of guide reset mechanisms are fixedly connected together by a limiting shaft 6.

[0031] As shown in Figure 4, the transfer assembly includes a transfer assembly mounting plate 20, a guide pulley mounting seat 17, a guide pulley 16, a limit roller mounting seat 18, a limit roller 19, and a transfer assembly limit plate 9.

[0032] The transfer component mounting plate 20 is a rectangular flat plate. Four guide pulley mounting seats 17 are installed below the transfer component mounting plate 20 by screws. Four guide pulleys 16 are respectively installed on the four guide pulley mounting seats 17 and locked with nuts. The axis of the guide pulley mounting seats 17 is parallel to the plane of the transfer component mounting plate 20 and at the same height. Four limit roller mounting seats are respectively installed in the mounting grooves on the other side of the guide pulley mounting seats 17. Four limit rollers 19 are respectively installed on the four limit roller mounting seats 18 to limit the vertical movement of the transfer component mounting plate 20. The transfer component limit plate 9 is triangular and is installed upside down at the middle position below the transfer component mounting plate 20 by screws to limit contact with the hydraulic buffer 2 when the transfer component mounting plate 20 extends.

[0033] The inlet / outlet cylinder 12 is connected to the transfer assembly via a T-shaped cylinder connector 11 and a cylinder connector 10 fixedly connected to the underside of the transfer assembly mounting plate 20. The other side of the T-shaped cylinder connector 11 is connected to the threaded end of the cylinder piston rod.

[0034] Among them, the blast-resistant door 29 is installed on the inner wall of the blast-resistant room through the blast-resistant door mounting base plate 28. The blast-resistant door 29 moves up and down under the action of the blast-resistant door lifting cylinder to realize the opening and closing of the blast-resistant door 29.

[0035] The operation of this device includes the following steps:

[0036] Step A: The blast-resistant door lifting cylinder 26 retracts, causing the blast-resistant door 29 to rise;

[0037] Step B: The inlet / outlet cylinder 12 moves to the left, pushing the transfer assembly to move to the left along the docking shaft 5;

[0038] Step C: Under the action of the compression spring 23, the blocking plate 21 and the limiting buffer block 22 are in close contact with the limiting roller mounting seat 18, pushing the docking shaft 5 and the guide shaft 8 to move to the left together;

[0039] Step D: The in-and-out cylinder 12 pushes the guide pulley 16 and the limit roller mounting seat 18 to continue moving to the left until the positioning pin 4 on the docking shaft 5 enters the positioning hole at the end of the support shaft 3 to complete the docking;

[0040] Step E: The inlet and outlet cylinder 12 continues to push the transfer assembly to the left on the completed guide rail after docking, until the transfer assembly limit plate 9 contacts the hydraulic buffer 2, completing the transfer.

[0041] When the above steps EA are reversed, the transfer device can smoothly enter the explosion-proof room.

[0042] In summary, the above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A transfer device with a retractable guide rail, characterized in that, Includes support shaft, transfer assembly, inlet and outlet cylinders, docking shaft, and guide reset mechanism; Two support shafts are fixedly connected parallel to each other on the workbench outside the blast wall; the guide reset mechanism is fixedly installed on the workbench inside the blast wall, and two docking shafts are fixedly connected to the movable part above the guide reset mechanism, with the orientation of the docking shafts corresponding to the support shafts; the transfer assembly and the docking shaft are connected by rollers, and the transfer assembly moves left and right along the axis of the docking shaft under the push of the inlet and outlet cylinders; the compression spring in the guide reset mechanism is in a pre-compressed state when the docking shaft is retracted, and when the docking shaft is extended and docked, the docking shaft is driven by the compression spring under the guidance of the guide reset mechanism to realize the docking of the docking shaft and the support shaft, and the two together form a linear guide rail for the movement of the transfer assembly; The transfer assembly includes a transfer assembly mounting plate, guide pulley mounting seats, guide pulleys, limit roller mounting seats, limit rollers, and a transfer assembly limiting plate. Four guide pulley mounting seats are symmetrically fixed below the transfer assembly mounting plate. The four guide pulleys are respectively installed in mounting grooves on one side of each of the four guide pulley mounting seats and locked in place with nuts. Four limit roller mounting seats are respectively installed in mounting grooves on the other side of each guide pulley mounting seat, and the four limit rollers are respectively mounted on the four limit roller mounting seats. The transfer assembly limiting plate is installed upside down at the center of the lower part of the transfer assembly mounting plate using screws, for contact and limiting when the transfer assembly mounting plate extends and contacts the hydraulic buffer.

2. The retractable guide rail transfer device as described in claim 1, characterized in that, It also includes an external fixed platform and a hydraulic buffer. The external fixed platform is fixedly connected to the workbench outside the explosion-proof wall, and the hydraulic buffer is installed on the end face of the external fixed platform facing the transfer device.

3. The retractable guide rail transfer device as described in claim 1, characterized in that, The guide reset mechanism consists of two sets, each including a guide shaft, an inter-shaft connecting block, a guide slider, a slider mounting seat, a guide shaft limiting plate, a blocking plate, a limiting buffer block, a compression spring, a spring guide shaft, and a spring limiting bracket; The guide slider is fixedly installed on the workbench inside the explosion-proof wall by a slider mounting seat. The guide shaft and the guide slider are slidably engaged by a hole-shaft engagement. Guide shaft limiting plates are fixedly installed at both ends of the guide shaft. The guide shaft is fixedly connected to the docking shaft via an inter-shaft connecting block. One end of the docking shaft is connected to a positioning pin, and the other end is a stepped shaft used to connect to a blocking plate. A limiting buffer block is installed between the blocking plate and the guide pulley mounting seat. The spring limiting bracket is fixedly installed on the worktable behind the slider mounting seat. The spring limiting bracket has a through hole for the spring guide shaft to pass through. The spring guide shaft is fixedly connected to the rear end of the docking shaft and forms a stepped surface at the connection. A compression spring is fitted onto the spring guide shaft, which passes through the through hole on the spring limiting bracket. Both ends of the compression spring are in contact with the stepped surface and the spring limiting bracket. When the transfer assembly is at the right extreme position, the compression spring is in a pre-compressed state under the action of the inlet and outlet cylinders. The inter-shaft connecting blocks on the two sets of guide reset mechanisms are connected together by a limiting shaft.

4. The retractable guide rail transfer device as described in claim 1 or 3, characterized in that, The support shaft and the docking shaft have guide holes machined on their opposite end faces. A positioning pin is fixedly connected to the opposite end faces of the docking shaft and the support shaft. The support shaft and the docking shaft are positioned during the docking process by the cooperation of the positioning pin and the guide hole.

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