Safety valve assembling equipment for liquefied gas steel cylinder

Abstract

The safety valve assembling equipment comprises an assembling table, a fixing assembly is arranged on the assembling table, the fixing assembly comprises a bidirectional lead screw and a guide rod which are oppositely arranged, the bidirectional lead screw is rotationally connected to the assembling table, and two sections of rod bodies, opposite in thread rotation direction, of the bidirectional lead screw are both in threaded connection with fixing plates; the ends, away from the two-way lead screw, of the fixing plates are slidably connected to the guide rods, the opposite surfaces of the fixing plates abut against the outer surface of the liquefied gas steel cylinder, a mounting plate is arranged on the assembling table, a first motor is arranged on the mounting plate, an output shaft of the first motor is connected with a base plate through a connecting assembly, and a clamping assembly for clamping a safety valve is arranged on the base plate. The safety valve assembling device has the effect of improving the safety valve assembling efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of cylinder valves, and in particular to a safety valve assembly device for liquefied gas cylinders. Background Art

[0002] A liquefied gas cylinder refers to a cylinder used to store liquefied gas. When there is liquefied gas inside, the pressure is very high and any improper operation may cause an explosion. It is a special equipment. In order to ensure the safe use of liquefied gas cylinders, a safety valve needs to be installed at the bottle mouth after the liquefied gas cylinder body is produced.

[0003] In the traditional safety valve assembly process, the body of the liquefied gas cylinder is usually placed on the assembly table manually, and then the worker holds the valve and places it on the bottle mouth, and then tightens the safety valve with a wrench to complete the installation process.

[0004] However, during the manual installation of the valve, the bottle body may shake slightly due to the torsional force. At this time, workers are required to manually support and fix the cylinder. At the same time, it takes a lot of time to manually turn the wrench to tighten the valve. The manual installation of the valve is inefficient and has obvious shortcomings. Summary of the invention

[0005] In order to improve the assembly efficiency of safety valves, the present application provides a safety valve assembly device for liquefied gas cylinders.

[0006] The present application provides a safety valve assembly device for liquefied gas cylinders using the following technical solutions: A safety valve assembly device for a liquefied gas cylinder comprises an assembly platform, a fixing assembly is arranged on the assembly platform, the fixing assembly comprises a bidirectional screw rod and a guide rod arranged opposite to each other, the bidirectional screw rod is rotatably connected to the assembly platform, two sections of the bidirectional screw rod with opposite thread rotation directions are both threadedly connected with a fixing plate, one end of the fixing plate away from the bidirectional screw rod is slidably connected to the guide rod, and opposite surfaces of the fixing plate are respectively in contact with the outer surface of the liquefied gas cylinder; The assembly table is provided with a mounting plate, the mounting plate is provided with a first motor, the output shaft of the first motor is connected with a base plate through a connecting component, the base plate is provided with a clamping component, and the clamping component is used to clamp the safety valve.

[0007] By adopting the above technical solution, after the gas cylinder is placed on the assembly table, the worker starts the second motor, the second motor drives the bidirectional screw to rotate, the bidirectional screw drives the two base plates to gradually approach the gas cylinder until they abut against the outer surface of the gas cylinder, then the worker installs the safety valve on the base plate through the clamping assembly, and finally starts the first motor, the first motor drives the base plate to rotate, and during the rotation of the base plate, the safety valve is driven to be installed on the gas cylinder. Such an arrangement realizes the fixation of the gas cylinder on the assembly table, reduces the possibility of shaking of the gas cylinder during the installation of the safety valve, saves the time of workers manually supporting and pressing the cylinder to fix it, and at the same time, the first motor replaces manual rotation of the wrench to tighten the valve, further shortens the installation time of the safety valve, and improves the installation efficiency of the safety valve.

[0008] Optionally, an installation cavity is defined in the base plate, and the clamping assembly includes a plurality of screws rotatably connected to the installation cavity, each of the screws is threadedly connected to a clamping plate, the base plate is defined with a slide groove corresponding to the plurality of clamping plates one by one, the slide groove is communicated with the installation cavity, the clamping plate is slidably connected in the corresponding slide groove, one end of each screw is coaxially fixedly connected to a driven gear, a driving gear ring meshing with the plurality of driven gears is rotatably connected in the installation cavity, a driving shaft is rotatably connected to the base plate, one end of the driving shaft extends into the installation cavity and is coaxially fixedly connected to a driving gear, and the driving gear is meshed with the driving gear ring.

[0009] By adopting the above technical solution, the worker holds the valve and places it in the center of the base plate, and then rotates the drive shaft forward. The rotation of the drive shaft drives the active gear to rotate, and the active gear drives the driving ring gear to rotate forward. The driving ring gear drives multiple driven gears to rotate forward, and the driven gear drives the corresponding screw to rotate. During the rotation of the screw, the clamping plate moves along the slide groove toward the direction close to the safety valve. When the clamping plate abuts against the outer surface of the safety valve, the clamping work of the valve is completed. This arrangement realizes stable clamping of the safety valve, reduces the possibility of the safety valve detaching from the base plate during installation and causing the tightening process to be interrupted, and at the same time realizes the clamping of valves of different diameters and specifications, thereby improving the adaptability of the clamping assembly.

[0010] Optionally, a mounting cylinder is provided on the base plate, one end of the driving shaft extends into the mounting cylinder, a limiting assembly is provided in the mounting cylinder, the limiting assembly includes a No. 1 brake pad and a No. 2 brake pad which are sleeved on the outer surface of the driving shaft, the No. 1 brake pad is fixedly connected to the driving shaft, limiting grooves are provided on the opposite inner side walls of the mounting cylinder, a connecting ring is slidably connected in two of the limiting grooves, the No. 2 brake pad is arranged on the connecting ring, a first spring is provided in the limiting groove, one end of the first spring is connected to the inner side wall of the limiting groove, and the other end is connected to the connecting ring, the elastic force of the first spring drives the No. 2 brake pad to move toward the No. 1 brake pad.

[0011] By adopting the above technical solution, when it is necessary to rotate the driving shaft, the worker pushes the connecting ring inward through the pull ring. At this time, the connecting ring overcomes the elastic force of the first spring and moves in the direction away from the No. 1 brake pad. The movement of the connecting ring drives the No. 2 brake pad to separate from the No. 1 brake pad. At this time, the driving shaft can be rotated stably. After the clamping assembly clamps the safety valve, the worker cancels the force on the pull ring, and the elastic potential energy accumulated by the first spring is released and pushes the connecting ring to move in the direction close to the No. 1 brake pad. The connecting ring drives the No. 2 brake pad to fit tightly with the No. 1 brake pad. At the same time, under the restriction of the limiting groove, the connecting ring and the No. 2 brake pad cannot produce relative rotation with the No. 1 brake pad in the installation tube. Therefore, the friction force generated when the No. 1 brake pad and the No. 2 brake pad are in close contact will limit the rotation of the No. 1 brake pad, thereby limiting the rotation movement of the driving shaft, preventing the driving shaft from rotating due to unexpected factors during the installation of the safety valve and causing the clamping state of the clamping assembly to change, thereby ensuring the stability of the safety valve installation process.

[0012] Optionally, the limiting assembly also includes a pressure ring arranged on the connecting ring, a No. 3 brake pad is fixedly connected to the driving shaft, the No. 2 brake pad is arranged between the No. 1 brake pad and the No. 3 brake pad, the pressure ring is arranged at one end of the No. 3 brake pad away from the No. 2 brake pad, and the elastic force of the first spring drives the pressure ring to move toward the No. 3 brake pad.

[0013] By adopting the above technical solution, when the first spring drives the connecting ring to move toward the No. 1 brake pad, the connecting ring simultaneously drives the pressure ring to move toward the No. 3 brake pad. When the pressure ring is in close contact with the No. 3 brake pad, the pressure ring pushes the part of the No. 3 brake pad in close contact with the pressure ring to deform toward the No. 2 brake pad. In this way, the surface of the No. 2 brake pad facing away from the No. 1 brake pad is in close contact with the No. 3 brake pad and generates friction. The limiting friction force on the drive shaft is further increased, and the stability of the safety valve during installation is further improved.

[0014] Optionally, the connecting assembly includes a connecting shaft connected to the output end of the first motor, a connecting cylinder is provided on the substrate, a plurality of connecting grooves are evenly opened circumferentially on the outer surface of the connecting shaft, a damping rod corresponding to the plurality of connecting grooves is provided on the inner side wall of the connecting cylinder, a connecting block is provided at the telescopic end of the damping rod, the connecting block is a wedge-shaped block, the connecting block is slidably connected in the connecting groove, and the inner side wall of the connecting groove is obliquely arranged and abuts against the inclined surface of the connecting block.

[0015] By adopting the above technical solution, during the installation of the safety valve, the first motor drives the connecting shaft to rotate, the connecting shaft drives the connecting tube to rotate through the connection between the connecting block and the connecting groove, the connecting tube drives the base plate to rotate, and the base plate drives the safety valve clamped by the clamping assembly to rotate and install. During the rotation and installation of the safety valve, since the gas cylinder is fixed by the fixing assembly, as the valve is gradually screwed into the bottle mouth of the liquefied gas cylinder, the friction between the safety valve and the gas cylinder continues to increase, so that the resistance encountered by the connecting shaft during rotation gradually increases. When the valve is installed in place, the resistance during the rotation of the connecting shaft reaches the maximum. At this time, the resistance overcomes the elastic force of the damping rod to push the damping rod to shrink by itself. The contraction of the damping rod drives the connecting block to slide in the direction away from the connecting groove, and the contact area between the connecting block and the connecting groove is reduced, thereby reducing the rotation speed of the connecting tube relative to the connecting shaft, thereby effectively avoiding the possibility of the first motor continuously driving the connecting tube to rotate at a high speed, which may cause the safety valve to be installed too tightly, and the possibility of damage to the valve or bottle mouth thread due to the valve being installed too tightly is reduced, and the installation quality and safety of the safety valve are improved.

[0016] Optionally, a release assembly is provided on the base plate, and the release assembly includes a connecting rod arranged on the connecting block, a driving block is provided at one end of the connecting rod away from the connecting block, the driving block is a wedge-shaped block, a pressure plate is slidably connected to the inner side wall of the connecting cylinder, and the inclined surface of the driving block abuts against the pressure plate, a compression bag is provided on the base plate, and the compression bag is filled with compressed gas. When the damping rod is in a natural state, the bottom surface of the pressure plate is in contact with the surface of the compression bag, and an expansion bag is provided at one end of the limiting groove away from the first spring. The expansion bag is connected to the compression bag through an air pipe, and when the expansion bag is inflated, the expansion bag pushes the connecting ring to move in a direction away from the No. 1 brake pad, and an unlocking assembly for driving the drive shaft to rotate is provided in the mounting cylinder.

[0017] By adopting the above technical solution, in the process that the damping rod drives the connecting block to disengage from the connecting groove, the connecting block drives the driving block to move toward the pressure plate, and the driving block pushes the pressure plate downward during the movement, and the pressure plate moves downward and squeezes the compression bag, and the compressed gas in the compression bag moves into the expansion bag through the air pipe. The inflation of the expansion bag pushes the connecting ring to move in the direction away from the No. 1 brake pad, and the connecting ring drives the No. 2 brake pad to disengage from the No. 1 brake pad and the No. 3 brake pad. At this time, the restricting effect of the restricting component disappears, and the unlocking component drives the driving shaft to rotate in the opposite direction, and the reverse rotation of the driving shaft drives the clamping plate to disengage from the safety valve, and the installation work of the safety valve is completed. The setting of the release component and the unlocking component realizes the automatic unlocking of the safety valve, omits the operation of the worker rotating the driving shaft in the opposite direction, and further improves the installation efficiency of the safety valve. At the same time, the valve is automatically unlocked according to the state of the valve being installed in place, effectively avoiding the second motor driving the tightened valve to continue to rotate, thereby avoiding continuous rotation of the tightened valve, protecting the threaded structure of the valve and the cylinder, reducing wear and damage that may be caused by excessive rotation, and extending the service life of the equipment.

[0018] Optionally, a support plate is provided in the mounting cylinder, and the unlocking assembly includes a rack plate slidably connected to the support plate, the sliding direction of the rack plate is perpendicular to the axial direction of the mounting cylinder, and an unlocking gear meshing with the rack plate is coaxially fixedly connected to the drive shaft. A second spring is provided in the mounting cylinder, one end of the second spring is fixedly connected to the support plate, and the other end is fixedly connected to the rack plate. When the clamping assembly clamps the safety valve, the second spring is in a compressed state.

[0019] By adopting the above technical solution, when the worker rotates the drive shaft forward, the drive shaft drives the unlocking gear to rotate forward, and the unlocking gear drives the rack plate to move toward the second spring, and the second spring is compressed. After clamping is completed, the limiting component is activated, and the limiting component limits the rotation of the drive shaft and the unlocking gear, so that the compressed state of the rack plate and the second spring is fixed. When the release component cancels the action of the limiting component, the elastic potential energy accumulated in the second spring is released, and the second spring pushes the rack plate to move downward, and the rack plate drives the unlocking gear to rotate in the opposite direction, and the unlocking gear drives the drive shaft to rotate in the opposite direction, thereby realizing the cancellation of the clamping effect of the clamping component.

[0020] Optionally, the opposite surfaces of the fixing plate are provided with rubber pads, and the rubber pads abut against the outer surface of the liquefied gas cylinder.

[0021] By adopting the above technical solution, the provision of the rubber pad transforms the hard contact between the fixing plate and the liquefied gas cylinder into a flexible contact. The rubber pad absorbs the vibration energy generated by the liquefied gas cylinder during the installation of the safety valve, thereby preventing the liquefied gas cylinder from being pinched or dented.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application provides a fixing assembly, a clamping assembly and a first motor, wherein the fixing assembly fixes the gas cylinder on the assembly table, thereby reducing the possibility of the gas cylinder shaking during the installation of the safety valve, thereby saving the time of workers manually holding and pressing the cylinder to fix the cylinder. At the same time, the first motor replaces manual rotation of the wrench to tighten the valve, further shortening the installation time of the safety valve and improving the installation efficiency of the safety valve; 2. The present application sets a limiting component to limit the rotation of the drive shaft, thereby preventing the clamping state of the clamping component from changing due to unexpected factors causing the drive shaft to rotate during the installation of the safety valve, thereby ensuring the stability of the safety valve installation process. 3. The present application sets a connection assembly, and the setting of the connection assembly reduces the rotation speed of the connection tube relative to the connection shaft when the safety valve is installed in place, thereby effectively avoiding the possibility that the first motor continuously drives the connection tube to rotate at a high speed, which may cause the safety valve to be installed too tight. The possibility of damage to the valve or the bottle mouth thread due to the over-tight installation of the valve is reduced, and the installation quality and safety of the safety valve are improved; 4. The present application realizes automatic unlocking of the safety valve by setting a release component and an unlocking component, omitting the operation of workers rotating the drive shaft in reverse, further improving the installation efficiency of the safety valve, and automatically controlling the valve unlocking through the state of the valve being installed in place, effectively avoiding the second motor from driving the tightened valve to continuously rotate, thereby avoiding continuous rotation of the tightened valve, protecting the threaded structure of the valve and the cylinder, reducing wear and damage that may be caused by excessive rotation, and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of this application.

[0024] Figure 2 It is a cross-sectional view of the substrate in the embodiment of the present application.

[0025] Figure 3 It is a cross-sectional view of the installation cavity in the embodiment of the present application.

[0026] Figure 4 It is a cross-sectional view of the installation tube of the structural schematic diagram of the present application.

[0027] Figure 5 It is a cross-sectional view of the connecting cylinder and the connecting shaft in the embodiment of the present application.

[0028] Figure 6 It is a schematic diagram of the structure of the unlocking component in the embodiment of the present application.

[0029] Description of reference numerals: 01, liquefied gas cylinder; 1, assembly table; 2, fixing assembly; 21, bidirectional screw rod; 22, guide rod; 23, fixing plate; 24, rubber pad; 25, second motor; 3, mounting plate; 31, first motor; 4, connecting assembly; 41, connecting shaft; 411, connecting groove; 42, connecting cylinder; 43, damping rod; 44, connecting block; 5, base plate; 51, mounting cavity; 52, slide groove; 6, clamping assembly; 61, screw rod; 62, clamping plate; 63, driven gear; 64, driving gear ring; 65 , drive shaft; 651, support ring; 66, driving gear; 7, mounting cylinder; 71, limiting groove; 8, limiting assembly; 81, brake pad No. 1; 82, brake pad No. 2; 83, brake pad No. 3; 84, pressure ring; 85, connecting ring; 86, first spring; 9, release assembly; 91, connecting rod; 92, drive block; 93, pressure plate; 94, compression bag; 95, air pipe; 96, expansion bag; 10, support plate; 11, unlocking assembly; 111, rack plate; 112, unlocking gear; 113, second spring. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-6 This application is described in further detail.

[0031] The embodiment of the present application discloses a safety valve assembly device for a liquefied gas cylinder.

[0032] Reference Figure 1 and Figure 2 A safety valve assembly device for a liquefied gas cylinder includes an assembly table 1, which is used to support a liquefied gas cylinder 01. A fixing component 2 for fixing the liquefied gas cylinder 01 is arranged on the assembly table 1. A mounting plate 3 is fixedly connected to the assembly table 1. The mounting plate 3 is vertically arranged. A first motor 31 is fixedly connected to the mounting plate 3 through a support block (not shown in the figure). The output shaft of the first motor 31 is connected to a base plate 5 through a connecting component 4. An ear plate (not shown in the figure) that is rotatably matched with the base plate 5 is fixedly connected to the mounting plate 3. A clamping component 6 for clamping the safety valve is arranged on the base plate 5. The axis of the base plate 5 is on the same straight line as the axis of the mouth of the liquefied gas cylinder 01.

[0033] Reference Figure 1 and Figure 2The fixing component 2 includes a bidirectional screw rod 21 and a guide rod 22 which are arranged opposite to each other. The length directions of the bidirectional screw rod 21 and the guide rod 22 are parallel to the length direction of the assembly platform 1. The bidirectional screw rod 21 is rotatably connected to the surface of the assembly platform 1, and the guide rod 22 is fixedly connected to the side of the assembly platform 1 away from the bidirectional screw rod 21. The two ends of the rod body with opposite thread rotation directions of the bidirectional screw rod 21 are threadedly connected with fixing plates 23, and the end of the fixing plate 23 away from the bidirectional screw rod 21 is slidably connected to the guide rod 22. The two fixing plates 23 are both vertically arranged and the opposite surfaces are fixedly connected with rubber pads 24, and the rubber pads 24 are abutted against the outer surface of the liquefied gas cylinder 01. A second motor 25 is fixedly connected to the assembly platform 1, and the output shaft of the second motor 25 is coaxially fixedly connected to the bidirectional screw rod 21.

[0034] Reference Figure 2 and Figure 3 , a mounting cavity 51 is provided in the substrate 5, and the clamping assembly 6 includes a plurality of screws 61 rotatably connected to the mounting cavity 51. In the present embodiment, the number of the screws 61 is three, and the three screws 61 are evenly distributed in the mounting cavity 51 in a circular shape. Each screw 61 extends toward the axis of the substrate 5, and a clamping plate 62 is threadedly connected to each screw 61. The clamping plate 62 is L-shaped and is used to clamp the safety valve. The substrate 5 is provided with a slide groove 52 corresponding to the three clamping plates 62 one by one, and the slide groove 52 extends radially along the substrate 5. The three slide grooves 52 are all connected to the mounting cavity 51, and the clamping plates 62 are slidably connected to the opposite In the corresponding slide groove 52, one end of each screw rod 61 away from the axis of the base plate 5 is coaxially fixedly connected with a driven gear 63, and the three driven gears 63 are rotatably connected to the inner side wall of the installation cavity 51. The inner top wall of the installation cavity 51 is rotatably connected with a driving ring gear 64 meshing with the three driven gears 63. In this embodiment, the driving ring gear 64 is rotatably connected in the installation cavity 51 through the sliding fit relationship between the T-block and the annular groove. A driving shaft 65 is rotatably connected to the base plate 5, and one end of the driving shaft 65 extends into the installation cavity 51 and is coaxially fixedly connected with a driving gear 66, which is meshed with the driving ring gear 64.

[0035] After the liquefied gas cylinder 01 is placed on the assembly table 1, the worker starts the second motor 25, and the second motor 25 drives the bidirectional screw 21 to rotate, and the bidirectional screw 21 drives the two fixing plates 23 to move toward the direction close to the liquefied gas cylinder 01. When the rubber pads 24 on the two fixing plates 23 are in contact with the outer surface of the liquefied gas cylinder 01, the worker turns off the second motor 25, and the fixing work of the liquefied gas cylinder 01 is completed, so that the possibility of shaking of the liquefied gas cylinder 01 during the installation of the safety valve is reduced, which saves the time of the worker manually supporting and pressing the cylinder to fix it, and improves the installation efficiency of the safety valve; After the liquefied gas cylinder 01 is fixed, the worker holds the safety valve and ensures that the axis of the safety valve is in the same straight line as the axis of the substrate 5. Then the worker rotates the driving shaft 65 in the positive direction. The rotation of the driving shaft 65 drives the active gear 66 to rotate in the positive direction. The active gear 66 drives the meshing driving ring gear 64 to rotate in the installation cavity 51 in the positive direction. The driving ring gear 64 drives multiple driven gears 63 to rotate in the positive direction. The driven gear 63 drives the corresponding screw 61 to rotate. During the rotation of the screw 61, the clamping plate 62 moves along the slide groove 52 toward the direction close to the axis of the substrate 5. When the clamping plate 62 abuts against the outer surface of the safety valve, the worker loosens the safety valve and the driving shaft 65, and the clamping work of the safety valve is completed. This arrangement realizes the stable clamping of the safety valve, reduces the possibility of the safety valve detaching from the substrate 5 during the installation process and causing the tightening process to be interrupted, and at the same time realizes the clamping of valves with different diameters and specifications, thereby improving the adaptability of the clamping assembly 6. After the safety valve is clamped, the worker starts the first motor 31, which drives the substrate 5 to rotate. During the rotation of the substrate 5, the safety valve is driven to be installed on the liquefied gas cylinder 01. The first motor 31 replaces manual rotation of the wrench to tighten the valve, which further shortens the installation time of the safety valve and improves the installation efficiency of the safety valve.

[0036] Reference Figure 3 and Figure 4 A mounting tube 7 is fixedly connected to the outer surface of the substrate 5, one end of the driving shaft 65 extends into the mounting tube 7, and a limiting component 8 for limiting the rotation of the driving shaft 65 is arranged in the mounting tube 7. When the driving shaft 65 drives the clamping plate 62 to clamp the safety valve, the limiting component 8 limits the rotation of the driving shaft 65, thereby preventing the driving shaft 65 from rotating due to unexpected factors during the installation of the safety valve, thereby ensuring the stability of the safety valve installation process.

[0037] Reference Figure 3 and Figure 4 , the limiting component 8 includes a No. 1 brake pad 81, a No. 2 brake pad 82, a No. 3 brake pad 83 and a pressing ring 84 which are sequentially arranged along the length direction of the mounting tube 7, the No. 1 brake pad 81 is located on the side of the mounting tube 7 away from the substrate 5, the pressing ring 84 is located on the side of the mounting tube 7 close to the substrate 5, a supporting ring 651 for supporting the No. 1 brake pad 81 is fixedly sleeved on the outer surface of the driving shaft 65, the No. 1 brake pad 81, the No. 2 brake pad 82 and the No. 3 brake pad 83 are all ceramic brake pads, the axes of the No. 1 brake pad 81, the No. 2 brake pad 82, the No. 3 brake pad 83 and the pressing ring 84 are all in the same straight line with the axis of the driving shaft 65, and the No. 1 brake pad 81 and the No. 3 brake pad 83 are both fixedly sleeved on the outer surface of the driving shaft 65; Restriction grooves 71 are provided on the relative inner walls of the mounting tube 7. The length directions of the two restriction grooves 71 are parallel to the axial direction of the mounting tube 7. A connecting ring 85 is slidably connected in the two restriction grooves 71. The No. 2 brake pad 82 and the pressure ring 84 are fixedly connected at the opposite ends of the connecting ring 85 respectively. A first spring 86 is provided in each restriction groove 71. One end of the first spring 86 is fixedly connected to the inner wall of the restriction groove 71 close to the substrate 5, and the other end is fixedly connected to the connecting ring 85. The elastic force of the first spring 86 drives the No. 2 brake pad 82 to move toward the No. 1 brake pad 81 and the pressure ring 84 to move toward the No. 3 brake pad 83. When the No. 2 brake pad 82 is tightly against the surface of the No. 1 brake pad 81 and the pressure ring 84 is tightly against the surface of the No. 3 brake pad 83, the first spring 86 is in a compressed state, and a pull ring (not shown in the figure) is fixedly connected to the end surface of the connecting ring 85 away from the substrate 5 to facilitate the workers to operate.

[0038] Reference Figure 3 and Figure 4 When the drive shaft 65 needs to be rotated, the worker pushes the connecting ring 85 toward the base plate 5 through the pull ring. At this time, the connecting ring 85 overcomes the elastic force of the first spring 86 and moves in the direction away from the No. 1 brake pad 81. The movement of the connecting ring 85 drives the No. 2 brake pad 82 to separate from the No. 1 brake pad 81. At this time, the drive shaft 65 can be stably rotated, and the worker rotates the drive shaft 65 forward to make the clamping assembly 6 clamp the safety valve; After clamping, the worker cancels the force on the pull ring, and the elastic potential energy accumulated by the first spring 86 is released and pushes the connecting ring 85 to move toward the direction close to the No. 1 brake pad 81. The connecting ring 85 drives the No. 2 brake pad 82 to move toward the No. 1 brake pad 81. When the No. 2 brake pad 82 is pressed against the No. 1 brake pad 81 by the first spring 86, since the No. 1 brake pad 81 is stably supported by the support block and cannot be deformed, the No. 1 brake pad 81 and the No. 2 brake pad 82 are closely fitted to generate friction; At the same time, the connecting ring 85 drives the pressure ring 84 to move toward the No. 3 brake pad 83. When the pressure ring 84 is in close contact with the No. 3 brake pad 83, since the No. 3 brake pad 83 is made of ceramic, the pressure ring 84 pushes the part of the No. 3 brake pad 83 that is in close contact with the pressure ring 84 to deform toward the No. 2 brake pad 82. In this way, the surface of the No. 2 brake pad 82 that is away from the No. 1 brake pad 81 is in close contact with the No. 3 brake pad 83 and generates friction. The sum of the friction forces generated by the No. 2 brake pad 82, the No. 1 brake pad 81 and the No. 3 brake pad 83 will cooperatively limit the rotation of the No. 1 brake pad 81 and the No. 3 brake pad 83, so that the rotation movement of the drive shaft 65 is restricted, thereby preventing the occurrence of the phenomenon that the clamping state of the clamping assembly 6 changes due to the rotation of the drive shaft 65 due to unexpected factors during the installation of the safety valve, thereby ensuring the stability of the safety valve installation process.

[0039] Reference Figure 4 and Figure 5 The connecting assembly 4 includes a connecting shaft 41 which is coaxially fixedly connected to the output shaft of the first motor 31. A connecting cylinder 42 is fixedly connected to the surface of the base plate 5. The axes of the connecting shaft 41, the connecting cylinder 42 and the base plate 5 are all in the same straight line. A plurality of connecting grooves 411 are evenly arranged on the outer surface of the connecting shaft 41 in the circumferential direction. In the present embodiment, the number of the connecting grooves 411 is four. A damping rod 43 corresponding to the plurality of connecting grooves 411 is fixedly connected to the inner side wall of the connecting cylinder 42. The length direction of the damping rod 43 extends toward the axis of the connecting shaft 41. A connecting block 44 is fixedly connected to the telescopic end of each damping rod 43. The connecting block 44 is wedge-shaped. The connecting block 44 is slidably connected in the corresponding connecting groove 411. The inner side wall of the connecting groove 411 is oblique and abuts against the inclined surface of the connecting block 44.

[0040] During the installation of the safety valve, the first motor 31 drives the connecting shaft 41 to rotate, and the connecting shaft 41 drives the connecting tube 42 to rotate through the connection between the connecting block 44 and the connecting groove 411, and the connecting tube 42 drives the base plate 5 to rotate, and the base plate 5 drives the safety valve clamped by the clamping assembly 6 to rotate and install. During the rotational installation of the safety valve, since the liquefied gas cylinder 01 is fixed by the fixing assembly 2, as the safety valve is gradually screwed into the bottle mouth of the liquefied gas cylinder 01, the friction force at the connection between the safety valve and the liquefied gas cylinder 01 continues to increase, thereby gradually increasing the resistance encountered by the connecting shaft 41 during rotation. When the safety valve is installed in place, the resistance encountered by the connecting shaft 41 during rotation reaches a maximum value. At this time, the resistance encountered by the connecting shaft 41 The elastic force of the connecting tube 42 is greater than that of the damping rod 43 itself, and the inner wall of the connecting groove 411 pushes the telescopic end of the damping rod 43 to contract. The damping rod 43 drives the connecting block 44 to slide in the direction away from the connecting groove 411, and the contact area between the connecting block 44 and the connecting groove 411 is reduced. The connection friction between the connecting block 44 and the connecting groove 411 is reduced, and the power that can be transmitted to the connecting tube 42 when the connecting shaft 41 rotates is reduced, thereby reducing the rotation speed of the connecting tube 42 relative to the connecting shaft 41, thereby effectively avoiding the possibility of the first motor 31 continuously driving the connecting tube 42 to rotate at a high speed, which may cause the safety valve to be installed too tightly, and the possibility of damage to the valve or bottle mouth thread due to over-tight installation of the valve is reduced, thereby improving the installation quality and safety of the safety valve.

[0041] Reference Figure 4 , Figure 5 and Figure 6A release assembly 9 is provided on the base plate 5. The release assembly 9 includes a connecting rod 91 provided at the bottom of the connecting block 44. The length direction of the connecting rod 91 is parallel to the length direction of the connecting shaft 41. A driving block 92 is fixedly connected to one end of the connecting rod 91 away from the connecting block 44. The driving block 92 is a wedge-shaped block. The inclined direction of the inclined surface of the driving block 92 is arranged from top to bottom along the direction of the connecting cylinder 42 toward the connecting shaft 41. A pressing plate 93 is slidably connected to the inner side wall of the connecting cylinder 42. The sliding direction of the pressing plate 93 is parallel to the axial direction of the connecting shaft 41. The inclined surface of the driving block 92 abuts against the pressing plate 93. The surface of the substrate 5 facing away from the slide groove 52 is fixedly connected to a compression bag 94, and the compression bag 94 is filled with compressed gas. When the damping rod 43 is in a natural state, the bottom surface of the pressure plate 93 fits against the surface of the compression bag 94 facing away from the substrate 5. The compression bag 94 is connected to an air supply pipe 95 corresponding to the two limiting grooves 71. Each limiting groove 71 is fixedly connected to an expansion bag 96 at one end away from the first spring 86. The expansion bag 96 and the compression bag 94 are both elastic air bags. When the compressed gas in the compression bag 94 moves along the air supply pipe 95 into the expansion bag 96, the expansion bag 96 pushes the connecting ring 85 to move in the direction away from the No. 1 brake pad 81.

[0042] Reference Figure 4 , Figure 5 and Figure 6 A support plate 10 is fixedly connected in the mounting cylinder 7, and the support plate 10 is L-shaped. An unlocking component 11 for driving the driving shaft 65 to rotate in the opposite direction is arranged in the mounting cylinder 7. The unlocking component 11 includes a rack plate 111 slidably connected to the vertical section of the support plate 10. The sliding direction of the rack plate 111 is perpendicular to the axial direction of the mounting cylinder 7. An unlocking gear 112 meshing with the rack plate 111 is coaxially fixedly connected to the driving shaft 65. A second spring is arranged in the mounting cylinder 7, and one end of the second spring is fixedly connected to the support plate 10, and the other end is fixedly connected to the rack plate 111. When the clamping assembly 6 clamps the safety valve, the second spring is in a compressed state.

[0043] When the worker rotates the drive shaft 65 forward, the drive shaft 65 drives the unlocking gear 112 to rotate forward, and the unlocking gear 112 drives the rack plate 111 to move toward the second spring. The second spring is compressed by the pressure of the rack plate 111. After the clamping assembly 6 is clamped, the limiting assembly 8 is started, and the limiting assembly 8 limits the rotation of the drive shaft 65 and the unlocking gear 112, so that the compressed state of the rack plate 111 and the second spring is fixed; When the safety valve is installed in place, the damping rod 43 drives the connecting block 44 to disengage from the connecting groove 411, and at the same time, the connecting block 44 drives the driving block 92 to move toward the pressure plate 93. The driving block 92 pushes the pressure plate 93 downward during the movement. The pressure plate 93 moves downward and squeezes the compression bag 94. The compressed gas in the compression bag 94 moves to the expansion bag 96 through the air pipe 95. The expansion bag 96 gradually inflates and pushes the connecting ring 85 to move in the direction away from the No. 1 brake pad 81. When the expansion bag 96 is inflated to the maximum volume, the force of the expansion bag 96 on the connecting ring 85 and the thrust of the first spring 86 on the connecting ring 85 are offset. At this time, the No. 2 brake pad 82 is in the gap between the No. 1 brake pad 81 and the No. 3 brake pad 83, and the limiting effect of the limiting component 8 disappears. After the limiting effect of the limiting component 8 disappears, the elastic potential energy accumulated in the second spring is released, and the second spring pushes the rack plate 111 to move downward, and the rack plate 111 drives the unlocking gear 112 to rotate in the opposite direction, and the unlocking gear 112 drives the driving shaft 65 to rotate in the opposite direction, thereby realizing the cancellation of the clamping effect of the clamping component 6. The setting of the release component 9 and the unlocking component 11 realizes the automatic unlocking of the safety valve, omitting the operation of the worker to rotate the driving shaft 65 in the opposite direction, further improving the installation efficiency of the safety valve, and automatically controlling the valve unlocking through the state of the valve being installed in place, effectively avoiding the second motor 25 from driving the tightened valve to rotate continuously, thereby avoiding continuous rotation of the tightened valve, thereby protecting the threaded structure of the valve and the cylinder, reducing the wear and damage that may be caused by excessive rotation, and extending the service life of the equipment.

[0044] When the clamping assembly 6 cancels the clamping effect of the safety valve, the resistance on the connecting shaft 41 is instantly reduced, and the damping rod 43 pushes the connecting block 44 to be inserted into the connecting groove 411 again. At the same time, the connecting block 44 drives the pressure plate 93 to rise through the connecting rod 91, and the squeezing force of the pressure plate 93 on the compression bag 94 disappears. The compression bag 94 gradually expands and resets under its own elastic force. The gas in the expansion bag 96 flows into the compression bag 94 again along the air supply pipe 95. At the same time, the first spring 86 pushes the connecting ring 85 to move toward the No. 1 brake pad 81, thereby realizing the automatic reset of the release assembly 9 and the unlocking assembly 11, which is convenient for the installation of the next safety valve.

[0045] The implementation principle of the safety valve assembly equipment for liquefied gas cylinders in the embodiment of the present application is as follows: after the liquefied gas cylinder 01 is placed on the assembly table 1, the worker starts the second motor 25, the second motor 25 drives the bidirectional screw 21 to rotate, and the bidirectional screw 21 drives the two fixing plates 23 to move in the direction close to the liquefied gas cylinder 01. When the rubber pads 24 on the two fixing plates 23 are in contact with the outer surface of the liquefied gas cylinder 01, the worker turns off the second motor 25, and the fixing work of the liquefied gas cylinder 01 is completed, so that the possibility of shaking of the liquefied gas cylinder 01 during the installation of the safety valve is reduced, which saves the time of the worker manually supporting and pressing the cylinder to fix it, and improves the installation efficiency of the safety valve; After the liquefied gas cylinder 01 is fixed, the worker holds the safety valve and ensures that the axis of the safety valve is in the same straight line as the axis of the substrate 5. Then the worker rotates the drive shaft 65 in the positive direction. The rotation of the drive shaft 65 drives the active gear 66 to rotate in the positive direction. The active gear 66 drives the meshing drive ring gear 64 to rotate in the installation cavity 51 in the positive direction. The drive ring gear 64 drives multiple driven gears 63 to rotate in the positive direction. The driven gear 63 drives the corresponding screw 61 to rotate. During the rotation of the screw 61, the clamping plate 62 moves along the slide groove 52 toward the direction close to the axis of the substrate 5. When the clamping plate 62 abuts against the outer surface of the safety valve, the worker releases the safety valve and the drive shaft 65, and the clamping work of the safety valve is completed. After the safety valve is clamped, the worker starts the first motor 31. The first motor 31 drives the substrate 5 to rotate. During the rotation of the substrate 5, the safety valve is driven to be installed on the liquefied gas cylinder 01. The first motor 31 is used instead of manually turning the wrench to tighten the valve, which further shortens the installation time of the safety valve and improves the installation efficiency of the safety valve.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A safety valve assembly device for liquefied gas cylinders, characterized in that , The invention comprises an assembly platform (1), on which a fixing assembly (2) is arranged, and the fixing assembly (2) comprises a bidirectional screw rod (21) and a guide rod (22) arranged opposite to each other, the bidirectional screw rod (21) is rotatably connected to the assembly platform (1), and two sections of the bidirectional screw rod (21) with opposite screw threads are both threadedly connected with a fixing plate (23), and one end of the fixing plate (23) away from the bidirectional screw rod (21) is slidably connected to the guide rod (22), and opposite surfaces of the fixing plate (23) are respectively in contact with the outer surface of the liquefied gas cylinder (01); The assembly table (1) is provided with a mounting plate (3), the mounting plate (3) is provided with a first motor (31), the output shaft of the first motor (31) is connected to a base plate (5) via a connecting component (4), the base plate (5) is provided with a clamping component (6), and the clamping component (6) is used to clamp the safety valve.

2. The safety valve assembly equipment for liquefied gas cylinders according to claim 1, characterized in that: The base plate (5) is provided with an installation cavity (51), the clamping assembly (6) comprises a plurality of screw rods (61) rotatably connected to the installation cavity (51), each of the screw rods (61) is threadedly connected to a clamping plate (62), the base plate (5) is provided with a slide groove (52) corresponding to the plurality of clamping plates (62), the slide groove (52) is communicated with the installation cavity (51), and the clamping plate (62) is slidably connected to the corresponding slide groove (52) One end of each of the screw rods (61) is coaxially fixedly connected to a driven gear (63); a driving gear ring (64) is rotatably connected in the installation cavity (51) and is meshed with a plurality of the driven gears (63); a driving shaft (65) is rotatably connected to the base plate (5); one end of the driving shaft (65) extends into the installation cavity (51) and is coaxially fixedly connected to a driving gear (66); the driving gear (66) is meshed with the driving gear ring (64).

3. The safety valve assembly equipment for liquefied gas cylinders according to claim 2, characterized in that: The base plate (5) is provided with a mounting tube (7), one end of the driving shaft (65) extends into the mounting tube (7), a limiting assembly (8) is provided in the mounting tube (7), the limiting assembly (8) comprises a No. 1 brake pad (81) and a No. 2 brake pad (82) sleeved on the outer surface of the driving shaft (65), the No. 1 brake pad (81) is fixedly connected to the driving shaft (65), limiting grooves (71) are provided on the opposite inner side walls of the mounting tube (7), connecting rings (85) are slidably connected in the two limiting grooves (71), the No. 2 brake pad (82) is arranged on the connecting ring (85), a first spring (86) is provided in the limiting groove (71), one end of the first spring (86) is connected to the inner side wall of the limiting groove (71), and the other end is connected to the connecting ring (85), the elastic force of the first spring (86) drives the No. 2 brake pad (82) to move toward the No. 1 brake pad (81).

4. The safety valve assembly equipment for liquefied gas cylinders according to claim 3, characterized in that: The limiting assembly (8) also includes a pressure ring (84) arranged on the connecting ring (85); a No. 3 brake pad (83) is fixedly connected to the driving shaft (65); the No. 2 brake pad (82) is arranged between the No. 1 brake pad (81) and the No. 3 brake pad (83); the pressure ring (84) is arranged at one end of the No. 3 brake pad (83) away from the No. 2 brake pad (82); and the elastic force of the first spring (86) drives the pressure ring (84) to move toward the No. 3 brake pad (83).

5. The safety valve assembly equipment for liquefied gas cylinders according to claim 2, characterized in that: The connecting assembly (4) comprises a connecting shaft (41) connected to the output end of the first motor (31); a connecting cylinder (42) is arranged on the base plate (5); a plurality of connecting grooves (411) are evenly arranged on the outer surface of the connecting shaft (41) in a circumferential direction; a damping rod (43) corresponding to the plurality of connecting grooves (411) is arranged on the inner side wall of the connecting cylinder (42); a connecting block (44) is arranged at the telescopic end of the damping rod (43); the connecting block (44) is a wedge-shaped block; the connecting block (44) is slidably connected in the connecting groove (411); the inner side wall of the connecting groove (411) is arranged obliquely and contacts the inclined surface of the connecting block (44).

6. The safety valve assembly equipment for liquefied gas cylinders according to claim 5, characterized in that: A release assembly (9) is arranged on the base plate (5), and the release assembly (9) comprises a connecting rod (91) arranged on the connecting block (44); a driving block (92) is arranged at one end of the connecting rod (91) away from the connecting block (44); the driving block (92) is a wedge-shaped block; a pressure plate (93) is slidably connected to the inner wall of the connecting cylinder (42); an inclined surface of the driving block (92) abuts against the pressure plate (93); a compression bag (94) is arranged on the base plate (5), and the compression bag (94) is filled with compressed gas. When the damping rod (42) is in a state of being ... (43) In the natural state, the bottom surface of the pressure plate (93) is in contact with the surface of the compression bag (94), and an expansion bag (96) is provided at one end of the limiting groove (71) away from the first spring (86). The expansion bag (96) is connected to the compression bag (94) through an air pipe (95). When the expansion bag (96) is inflated, the expansion bag (96) pushes the connecting ring (85) to move in a direction away from the No. 1 brake pad (81), and an unlocking component (11) for driving the drive shaft (65) to rotate is provided in the mounting tube (7).

7. The safety valve assembly equipment for liquefied gas cylinders according to claim 6, characterized in that: A support plate (10) is arranged in the mounting tube (7); the unlocking assembly (11) comprises a rack plate (111) slidably connected to the support plate (10); the sliding direction of the rack plate (111) is perpendicular to the axial direction of the mounting tube (7); an unlocking gear (112) meshing with the rack plate (111) is coaxially fixedly connected to the drive shaft (65); a second spring is arranged in the mounting tube (7); one end of the second spring is fixedly connected to the support plate (10) and the other end is fixedly connected to the rack plate (111); when the clamping assembly (6) clamps the safety valve, the second spring is in a compressed state.

8. The safety valve assembly equipment for liquefied gas cylinders according to claim 1, characterized in that: The surfaces opposite to the fixing plate (23) are both provided with rubber pads (24), and the rubber pads (24) abut against the outer surface of the liquefied gas cylinder (01).

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