Cable branch box and production test equipment thereof

Abstract

The invention relates to the technical field of cable branch boxes, in particular to a cable branch box and production test equipment thereof.The cable branch box comprises a cabinet body, a hole channel communicated with an inner cavity of the cabinet body is formed in the bottom end of the cabinet body, and a base plate is fixedly arranged on the peripheral side face of the cabinet body and can be matched with special test equipment for diversified detection; the production test equipment comprises a rack, an intermittent impact mechanism and a lifting transposition mechanism are installed at the two ends of the rack respectively, a linkage assembly is installed at the bottom of the rack, the intermittent impact mechanism is composed of a rotation part and an impact part, and the linkage assembly is used for driving the rotation part and the lifting transposition mechanism to rotate periodically. According to the cabinet body impact test device, impact tests can be sequentially carried out on four side surfaces of the cabinet body at different heights, and the change of the pressure state in the cabinet body can be controlled according to the change of the descending height, so that impact tests can be sequentially carried out on the cabinet body under the conditions of normal pressure, high pressure and negative pressure, the purpose of one machine with multiple purposes is achieved, and the applicability of the equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of cable branch box technology, specifically a cable branch box and its production and testing equipment. Background Technology

[0002] A cable distribution box is a power distribution device used for the fixed distribution and installation of power cables. It is mainly used to branch, connect and split cable lines to achieve power distribution without cutting the main cable and reduce line loss. During the production process, it often requires various tests.

[0003] Currently, in actual use, high-voltage gas-filled cable branch boxes are sealed inside. When the internal temperature rises, the volume of gas inside increases, creating a relatively high-pressure state. Conversely, when the ambient temperature decreases, the volume of gas inside decreases, creating a relatively negative-pressure state. However, existing production and testing equipment can only perform impact tests on cable branch boxes under normal pressure conditions. When impact tests are required under relatively high-pressure or negative-pressure conditions, other equipment or auxiliary equipment must be used, which is inconvenient.

[0004] In addition, existing cable distribution boxes do not have holes designed to match the corresponding testing equipment, which can easily cause unnecessary trouble in the testing process. Summary of the Invention

[0005] The purpose of this invention is to provide a cable branch box and its production and testing equipment to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solutions: A cable branch box includes a cabinet, the bottom of which has a channel communicating with the inner cavity of the cabinet, and a pad is fixedly provided on the periphery of the cabinet.

[0007] A production and testing equipment for cable branch boxes is used to test the cabinet of the cable branch box. The production and testing equipment includes a frame, with an intermittent impact mechanism and a lifting and rotating mechanism installed at both ends of the frame. A clamping assembly is installed at the upper end of the lifting and rotating mechanism, and the cabinet is fixedly installed at the top of the lifting and rotating mechanism through the clamping assembly. A linkage assembly is installed at the bottom of the frame, and the intermittent impact mechanism and the lifting and rotating mechanism operate through the linkage assembly. The intermittent impact mechanism consists of a rotating part and an impact part. The linkage component is used to drive the rotating part and the lifting and rotating mechanism to rotate periodically. Under the periodic rotation of the rotating part, the impact part intermittently impacts the side of the cabinet. Under the periodic rotation of the lifting and rotating mechanism, the cabinet intermittently changes its surface.

[0008] As a preferred embodiment of the production and testing equipment described in this invention, the linkage component includes a horizontal seat fixed on the frame, a second vertical shaft rotatably mounted in the middle of the horizontal seat through a bearing, a first vertical shaft rotatably mounted on the frame through a bearing, a driving wheel and a second bevel gear fixedly sleeved at both ends of the first vertical shaft, a driven wheel and a partially toothed column fixedly sleeved at both ends of the second vertical shaft, the driving wheel and the driven wheel are arranged horizontally and coplanarly, and the driving wheel and the driven wheel are connected by a belt drive.

[0009] As a preferred embodiment of the production and testing equipment described in this invention, the rotating part is fixed to the side plate at the top of the frame, and a ring cylinder is rotatably mounted on the top of the side plate through a bearing. One end of the ring cylinder is fixedly connected to a bevel gear that meshes with the bevel gear. A turntable is rotatably mounted on the outer side of the other end of the ring cylinder through a bearing. A straight rod is fixedly provided on the edge of the turntable away from the side plate, and a rope is fixedly connected to the turntable.

[0010] As a preferred embodiment of the production and testing equipment described in this invention, the rotating part further includes a vertical frame fixed on the top of the frame and arranged vertically and coplanarly with the turntable. One end of the vertical frame is provided with a T-shaped arc groove. An arc-shaped toothed plate is movably inserted into the T-shaped arc groove. A spur gear for driving the arc-shaped toothed plate in and out of the T-shaped arc groove is rotatably installed near the groove opening inside the T-shaped arc groove. A wedge block is fixedly connected to one end of the arc-shaped toothed plate extending to the outside of the T-shaped arc groove. An arc rod that movably passes through the wedge block is also fixedly provided on the vertical frame.

[0011] As a preferred embodiment of the production and testing equipment described in this invention, the rotating part further includes a cylinder movably sleeved inside the end of the ring cylinder away from the bevel gear. A lever is fixedly connected to one end of the cylinder extending outside the ring cylinder. A fixed ring is fixedly sleeved at the end of the outer side of the ring cylinder near the turntable. A movable ring is movably sleeved at the end of the outer side of the ring cylinder near the side plate. A spring is fixedly connected between the movable ring and the fixed ring and sleeved outside the ring cylinder. A through groove is opened on the outer side of the ring cylinder. A protruding post is fixedly slidably connected inside the through groove between the movable ring and the cylinder.

[0012] As a preferred embodiment of the production testing equipment described in this invention, the impact part includes a slide frame fixed to the top of the frame, a slide table slidably mounted on the slide frame, and the slide table is fixedly connected to one end of a rope belt. A reset component is provided between the slide table and the slide frame, and an impact head is mounted on the slide table.

[0013] As a preferred embodiment of the production testing equipment described in this invention, the lifting and rotating mechanism includes a rotating seat that is rotatably mounted on the frame in a through manner. A square channel is opened through the center of the rotating seat, and a support is movably fitted inside the square channel. An air cavity is opened at the bottom of the support, and a round tube connected to the air cavity is fixedly provided at the bottom of the inner cavity of the support. The support base is also fixedly provided at the bottom, and a toothed disc that meshes with the incomplete toothed column is fixedly connected to the bottom end of the base. Two movable vertical plates that pass through the toothed disc are fixedly provided at the bottom end of the rotating seat. A cylinder is fixedly installed between the support base and the rotating seat. An adjustment component is also provided at the bottom end of the base.

[0014] As a preferred embodiment of the production testing equipment described in this invention, the adjustment component includes a cavity one and a cavity two opened on the base. The top of both cavity one and cavity two are provided with air holes that communicate with the air chamber. Piston columns are movably sleeved inside both cavity one and cavity two. The bottom ends of the two piston columns are fixedly connected with support plates. Guide grooves for restricting the linear movement of the corresponding support plates are opened at the bottom ends of both sides of the base. A return spring is fitted on the outer side of one of the piston columns, located outside the first cavity, and a return spring is fitted on the outer side of the other piston column, located inside the second cavity. A stop plate is fixed on the side of the vertical plate near the first cavity. A slot is opened through the gear plate at the position corresponding to the two support plates. A guide wheel is rotatably installed inside the two slots. A reset component is also installed on one side of the base. A rope belt 2, which is fixedly connected between the reset component 2 and one of the support plates, is wound around the two guide wheels.

[0015] As a preferred embodiment of the production testing equipment described in this invention, the clamping assembly includes a spur gear II rotatably mounted on the top of the rotary table via a rotating rod and two limiting rods fixed on the top of the rotary table. An annular plate is provided between the two limiting rods, and two arc-shaped slots are provided through the annular plate. The two limiting rods are respectively movably inserted into the corresponding arc-shaped slots. Four clamps evenly distributed in a ring are also movably mounted on the top of the rotary table. A set of tooth blocks that mesh with the spur gear II is fixedly provided on the inner side of the annular plate at the position corresponding to the spur gear II. Four protruding plates for pushing the corresponding clamps closer to the cabinet are also fixedly provided on the inner side of the annular plate.

[0016] The beneficial effects of this invention are: 1. This invention allows for the inflation or deflation of the sealed cabinet interior during testing by opening a channel at the bottom of the cabinet that communicates with its internal cavity. This, in conjunction with specialized production and testing equipment, enables impact testing of the cabinet under different internal pressure conditions. 2. This invention drives the first vertical shaft to rotate, and drives the second vertical shaft to rotate synchronously through the transmission of the belt. The bevel gear at the end of the first vertical shaft drives the intermittent impact mechanism to intermittently impact the cabinet. At the same time, the incomplete toothed column at the end of the second vertical shaft drives the lifting and rotating mechanism to intermittently rotate, allowing the cabinet to switch between adjacent sides, so as to realize the impact test on the four sides of the cabinet in sequence. 3. By setting an adjustment component on the base, the present invention can control the change of pressure state inside the cabinet according to the change of the downward height during the process of driving the support to move downward by the cylinder, thereby realizing the impact test of the cabinet under normal pressure, high pressure and negative pressure conditions in sequence, and feeding back the sealing performance of the cabinet under different internal pressure conditions based on the rate of change of air pressure inside the cabinet after the impact. 4. This invention controls the rotation of a spur gear inside the T-shaped arc groove, and uses the rotating spur gear to drive the arc-shaped toothed plate to extend out of or retract into the T-shaped arc groove, thereby adjusting the impact intensity of the impacting part and improving the applicability of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of the cable branch box of the present invention; Figure 2 This is a first-view structural diagram of the production and testing equipment of the present invention; Figure 3 This is a schematic diagram of the overall second-view structure of the production and testing equipment of the present invention; Figure 4 This is a schematic diagram of the overall third-view structure of the production and testing equipment of this invention; Figure 5 This is a partial structural schematic diagram of the intermittent impact mechanism of the production and testing equipment of the present invention; Figure 6 This is the present invention. Figure 5 Partial cross-sectional view; Figure 7 This is a schematic diagram of the stand and arc-shaped toothed plate of the production and testing equipment of this invention. Figure 8 This is the present invention. Figure 1 Enlarged schematic diagram of part A of the structure; Figure 9 This is a first-view structural schematic diagram of the lifting and rotating mechanism of the production and testing equipment of the present invention; Figure 10 This is a second-view structural schematic diagram of the lifting and rotating mechanism of the production and testing equipment of the present invention; Figure 11 This is the present invention. Figure 10 A cross-sectional schematic diagram; Figure 12 This is a schematic diagram of the clamp structure of the production and testing equipment of the present invention; Figure 13 This is a schematic diagram illustrating the application scenario of the production and testing equipment of this invention.

[0018] The attached diagram is labeled as follows: 1. Cabinet; 2. Pad; 3. Channel; 4. Frame; 5. Intermittent impact mechanism; 51. Rotating part; 511. Side plate; 512. Stand; 513. Ring cylinder; 514. Bevel gear one; 515. Cylinder; 516. Fixed ring; 517. Moving ring; 518. Spring one; 519. Protruding column; 5110. Rope one; 5111. Arc rod; 5112. T-shaped arc groove; 5113. Arc toothed plate; 5114. Wedge block; 5115. Spur gear one; 5116. Turntable; 5117. Lever; 5118. Straight rod; 52. Impact part; 521. Slide frame; 522. Slide table; 523. Reset part one; 6. Lifting and indexing mechanism; 61. Rotary seat 62. Support; 63. Round tube; 64. Base; 65. Cylinder; 66. Vertical plate; 67. Gear plate; 68. Adjustment assembly; 681. Cavity 1; 682. Cavity 2; 683. Guide groove; 684. Support plate; 685. Piston column; 686. Rope 2; 687. Guide wheel; 688. Support plate; 689. Reset component 2; 7. Linkage assembly; 71. Horizontal seat; 72. Vertical shaft 1; 73. Vertical shaft 2; 74. Incomplete gear column; 75. Bevel gear 2; 8. Clamping assembly; 81. Spur gear 2; 82. Limiting rod frame; 83. Ring plate; 84. Arc-shaped through groove; 85. Convex plate; 86. Chuck; 861. Slide; 862. Spring 2; 863. U-shaped clamping plate; 864. Dovetail groove. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The cable branch box of this invention is an important component of the smart grid and an indispensable key basic equipment in the smart distribution network. It is an important link in ensuring the stable operation of the power grid and is mainly used for branching, connecting and splitting cable lines.

[0021] The production testing equipment of this invention belongs to a part of physical testing technology. It is a type of equipment for testing the structural stability of cable branch boxes. It is used to conduct impact tests on the four sides of a square cable branch box under different conditions from a top view, realizing multiple uses in one machine.

[0022] Example 1: Refer to the appendix of the instruction manual. Figure 1This embodiment is the first embodiment of the present invention, providing a cable branch box, specifically including a square cabinet 1 in top view. The bottom of the cabinet 1 has a channel 3 communicating with the inner cavity of the cabinet 1. A sealing valve can be installed at the location of the channel 3 to maintain stable pressure inside the cable branch box. Furthermore, a pressure sensor for monitoring pressure changes inside the cabinet 1 is integrated inside the cabinet 1. During production, a T-junction can be installed inside the channel 3, with two ports extending into the cabinet 1. Control valves are installed on the two ports extending into the cabinet 1. The sealed cabinet 1 is then tested. First, the inside of the cabinet needs to be evacuated through a three-way pipe. Then, protective gas is injected into the cabinet 1 through the three-way pipe to simulate the internal pressure state of the high-pressure gas-filled cable branch box during normal use. This can be used in conjunction with subsequent testing processes to inject or evacuate gas into the sealed cabinet 1 through the channel 3, so that the inside of the cable branch box to be tested is in a relatively high pressure or relatively negative pressure state. This facilitates the use of production testing equipment to test the sealing performance of the cabinet 1 under different pressure conditions. A pad 2 is fixedly provided on the periphery of the cabinet 1. Anti-slip protrusions can be added to the surface of the pad 2 to improve the stability of the workpiece clamping part of the production testing equipment in clamping the cabinet 1.

[0023] Example 2: Refer to the appendix of the instruction manual. Figures 2-4 and Figure 13 This embodiment is the second embodiment of the present invention, which provides a production and testing equipment for cable branch boxes. The production and testing equipment includes a frame 4, with an intermittent impact mechanism 5 and a lifting and rotating mechanism 6 respectively installed at both ends of the frame 4. A clamping component 8 is installed at the upper end of the lifting and rotating mechanism 6, and the cabinet 1 is fixedly installed at the top of the lifting and rotating mechanism 6 through the clamping component 8. A linkage component 7 is installed at the bottom of the frame 4, and the intermittent impact mechanism 5 and the lifting and rotating mechanism 6 operate through the linkage component. The intermittent impact mechanism 5 consists of a rotating part 51 and an impact part 52. The linkage component 7 is used to drive the rotating part 51 and the lifting and rotating mechanism 6 to rotate periodically. Under the periodic rotation of the rotating part 51, the impact part 52 intermittently impacts the side of the cabinet 1. The cabinet 1 intermittently changes its surface under the periodic rotation of the lifting and rotating mechanism 6.

[0024] It should be noted that the present invention uses the linkage component 7 to drive the rotating part 51 of the intermittent impact mechanism 5 and the lifting and rotating mechanism 6 to rotate periodically, so that the rotating part 51 drives the impact part 52 to complete one impact on the side of the cabinet 1 during each rotation cycle. At the same time, during each rotation cycle, the linkage component 7 drives the lifting and rotating mechanism 6 to rotate 90°, so that the cabinet 1 can automatically switch between adjacent sides. The process of driving the cabinet 1 to switch sides is carried out after the impact part 52 completes the impact test on the current side and before the next impact test.

[0025] Furthermore, such as Figures 3-4 As shown, the linkage assembly 7 includes a horizontal seat 71 fixed on the frame 4. A second vertical shaft 73 is rotatably mounted in the middle of the horizontal seat 71 through a bearing. A first vertical shaft 72 is rotatably mounted on the frame 4 through a bearing. A power device (not shown in the figure) for rotating the first vertical shaft 72 can be installed at the bottom of the frame 4. The power device is preferably a drive motor in the prior art, and the specific model is selected according to the actual production needs. A driving wheel and a second bevel gear 75 are fixedly sleeved at both ends of the first vertical shaft 72. A driven wheel and a partially toothed column 74 are fixedly sleeved at both ends of the second vertical shaft 73. The driving wheel and the driven wheel are arranged horizontally and coplanarly, and the driving wheel and the driven wheel are connected by belt drive.

[0026] It should be noted that in the process of using the linkage component 7 to drive the intermittent impact mechanism 5 and the lifting and rotating mechanism 6 to perform linkage actions, the power device drives the vertical shaft 72 to rotate, and the belt drives the vertical shaft 73 to rotate synchronously. Thus, the bevel gear 75 at the end of the vertical shaft 72 drives the intermittent impact mechanism 5 to intermittently impact the cabinet 1. At the same time, the incomplete toothed column 74 at the end of the vertical shaft 73 drives the lifting and rotating mechanism 6 to intermittently rotate, allowing the cabinet 1 to switch between adjacent sides, so as to realize the impact test on the four sides of the cabinet 1 in sequence.

[0027] Furthermore, such as Figures 2-3 and Figures 5-7 As shown, the rotating part 51 is fixed to the side plate 511 on the top of the frame 4. The top of the side plate 511 is rotatably mounted with a ring cylinder 513 through a bearing. One end of the ring cylinder 513 is fixedly connected to a bevel gear 514 that meshes with the bevel gear 75, so that the bevel gear 75 can drive the bevel gear 514 to rotate during rotation. The other end of the ring cylinder 513 is rotatably mounted with a turntable 5116 through a bearing to ensure that the turntable 5116 is not affected during the rotation of the ring cylinder 513. A straight rod 5118 is fixedly provided on the edge of the turntable 5116 away from the side plate 511. A rope belt 5110 is fixedly connected to the turntable 5116.

[0028] Furthermore, the rotating part 51 also includes a vertical frame 512 fixed to the top of the frame 4 and arranged vertically and coplanarly with the turntable 5116. The vertical frame 512 is composed of a semi-circular ring plate and a support plate designed as one piece. The bottom end of the support plate is fixedly connected to the frame 4. A T-shaped arc groove 5112 is opened at one end of the semi-circular ring plate. An arc-shaped toothed plate 5113 is movably inserted into the T-shaped arc groove 5112. A toothed plate 5113 is rotatably installed inside the T-shaped arc groove 5112 near the groove opening to drive the arc-shaped toothed plate 5113 in and out of the T-shaped arc groove 5112. The spur gear 5115 is driven to rotate by a power device fixedly installed on the outside of the upright 512. The power device is preferably a drive motor in the prior art. The end of the arc-shaped toothed plate 5113 extending to the outside of the T-shaped arc groove 5112 is fixedly connected to a wedge block 5114. An arc rod 5111 that moves through the wedge block 5114 is also fixed between the two end faces of the semi-circular ring plate. The arc rod 5111 can be used to help guide the arc-shaped toothed plate 5113 to stably extend out of the T-shaped arc groove 5112.

[0029] Furthermore, the rotating part 51 also includes a cylinder 515 movably sleeved inside the end of the ring cylinder 513 away from the bevel gear 514. A lever 5117 is fixedly connected to one end of the cylinder 515 extending outside the ring cylinder 513. A fixed ring 516 is fixedly sleeved on the outer side of the ring cylinder 513 near the turntable 5116. A movable ring 517 is movably sleeved on the outer side of the ring cylinder 513 near the side plate 511. A spring 518 sleeved on the outside of the ring cylinder 513 is fixedly connected between the movable ring 517 and the fixed ring 516. When the spring 518 is in its natural state, the lever 5117 rotates in contact with the turntable 5116, ensuring that the lever 5117 can rotate the straight rod 5118 while rotating with the ring cylinder 513, thereby driving the turntable 5116 to rotate. A through groove is provided on the outer side of the ring cylinder 513, and a protrusion 519 is fixedly and slidably connected to the inside of the through groove between the moving ring 517 and the cylinder 515. The setting of the protrusion 519 can ensure that the cylinder 515 rotates synchronously with the ring cylinder 513.

[0030] It should be noted that the length of the inclined area on the wedge block 5114 along the axis of the cylinder 515 is equal to the length of the straight rod 5118. During the continuous rotation of the rotating part 51 driven by the linkage assembly 7, the rotating bevel gear 75 drives the bevel gear 514 at the end of the ring cylinder 513 to rotate, causing the cylinder 515 to rotate synchronously with the ring cylinder 513. This causes the lever 5117 to rotate synchronously with the cylinder 515. During the continuous rotation of the lever 5117, when the lever 511... 7. After the movement reaches contact with the straight rod 5118 on the turntable 5116, it will move the straight rod 5118 to rotate, and drive the turntable 5116 to rotate, thereby driving the rope 5110 to wind up. At the same time, the wound rope 5110 is used to pull the impact component on the impact part 52 to store force. When the lever 5117 rotates to contact the wedge block 5114, as the lever 5117 continues to rotate, the lever 5117 will gradually move away from the side plate 511 under the action of the inclined surface on the wedge block 5114. During this process, the lever 5117 will drive the cylinder 515 to move synchronously. Since the moving ring 517 and the cylinder 515 are fixedly connected by the protruding post 519 that passes through the slot, the cylinder 515 will pull the moving ring 517 to move synchronously while moving, so that the moving ring 517 compresses the spring 518 along the axis of the cylinder 515. When the lever 5117 disengages from the wedge block 5117 during rotation, the lever 5117 also disengages from the straight rod 5118. At this time, the impact part 52 after accumulating force will instantly reset and drive the rope 5110 to pull the rotating turntable 5116 to rotate, waiting for the next round of lever 5117 to be turned. The lever 5117 will reset under the restoring force of the spring 518 and rotate again against the turntable 5116. In addition, during the intermittent impact of the test cabinet 1, the spur gear 5115 can be driven to rotate by the power device installed on the outside of the stand 512, and the rotating spur gear 5115 can drive the arc-shaped toothed plate 5113 to extend out of the T-shaped arc groove 5112 or retract into the T-shaped arc groove 5112, thereby adjusting the impact intensity of the impact part 52.

[0031] Furthermore, such as Figures 2-3 and Figure 8As shown, the impact unit 52 includes a slide frame 521 fixed to the top of the frame 4. A slide table 522 is slidably mounted on the slide frame 521, and the slide table 522 is fixedly connected to one end of the rope 5110. A reset member 523 is provided between the slide table 522 and the slide frame 521, and an impact head is mounted on the slide table 522. The impact head is configured to be a structure that is controlled to extend and retract by a power device to ensure that the impact head in the initial state will not affect the clamping process of the cabinet 1 to be tested. The power device can be an electric telescopic rod or an electric slider structure to provide a lateral thrust and a retraction force.

[0032] Furthermore, the reset component 523 consists of a guide rod fixed inside the slide frame 521 to guide the slide table 522 and an elastic component sleeved on the outside of the guide rod. The elastic component is selected as a tension spring, but it is not limited to this. Any component with elasticity and telescopic buffering function can be used as the elastic component of the present invention.

[0033] It should be noted that during the process of using the rope 5110 that rotates with the turntable 5116 to pull the impact component on the impact part 52 (i.e., the slide table 522 with the impact head) to store force, as the rope 5110 is wound up, the slide table 522 will compress the elastic element along the axis of the guide rod under the pull of the rope 5110, so that it stores force. Then, after the stored force is released, the slide table 522 will instantly reset under the restoring force of the elastic element, so that the synchronously reset impact head applies an instantaneous impact to the cabinet 1, thereby realizing the impact resistance test on the side of the cabinet 1.

[0034] Furthermore, such as Figure 2 and Figures 9-10 As shown, the lifting and rotating mechanism 6 includes a rotating seat 61 that is rotatably mounted on the frame 4 in a through manner. A square channel is opened through the center of the rotating seat 61. A support 62 with a recessed cavity on the top surface is movably fitted inside the square channel. An air cavity is opened at the bottom of the support 62, and a round tube 63 connected to the air cavity is fixedly provided at the bottom of the inner cavity of the support 62. Furthermore, a base 64 is fixedly provided at the bottom of the support 62. A toothed disc 67 that meshes with the incomplete toothed column 74 is fixedly connected to the bottom end of the base 64. Two vertical plates 66 that move through the toothed disc 67 are fixedly provided at the bottom end of the rotating seat 61. A cylinder 65 is fixedly installed between the support 62 and the rotating seat 61. The support 62 can be driven to move downward by the cylinder 65 to realize impact testing on different heights of the side of the cabinet 1. The cylinder 65 is a single-acting cylinder of model DSA25N200. An adjustment component 68 is also provided at the bottom end of the base 64.

[0035] It should be noted that during the continuous rotation of the incomplete gear column 74, the toothed area on its surface can drive the gear disk 67 to rotate a quarter turn for each full rotation. During the periodic rotation of the lifting and rotating mechanism 6 by the linkage component 7, the incomplete gear column 74, during continuous rotation, engages with the gear disk 67, allowing the incomplete gear column 74 to drive the gear disk 67 to rotate 90°, thereby achieving the switching of adjacent sides of the cabinet 1. Furthermore, after impact testing on the four sides of the cabinet 1 at the same horizontal height, the cylinder 65 can drive the support 62 to move downward, thereby moving the cabinet 1 downward, thus achieving impact testing on the four sides of the cabinet 1 at different horizontal heights.

[0036] Furthermore, such as Figures 10-11 As shown, the adjustment assembly 68 includes a first cavity 681 and a second cavity 682 opened on the base 64. The volume of the first cavity 681 is smaller than that of the second cavity 682. Both the first cavity 681 and the second cavity 682 have air holes at their top ends that communicate with the air chambers. Both the first cavity 681 and the second cavity 682 have piston columns 685 movably fitted inside them. The bottom ends of the two piston columns 685 are fixedly connected to the support plates 684. The bottom ends of both sides of the base 64 have guide grooves 683 for restricting the linear movement of the corresponding support plates 684. A return spring 1 is fitted on the outer side of one piston rod 685, located outside cavity 1 681, and a return spring 2 is fitted on the outer side of the other piston rod 685, located inside cavity 2 682. The elastic coefficient of return spring 2 is sufficiently large, meaning that during the upward movement of piston rod 685 inside cavity 1 to pressurize gas into cabinet 1, the resulting high pressure is insufficient to push piston rod 685 inside cavity 2 682 downward. A stop plate is fixedly provided on the side of the vertical plate 66 near cavity 1 681. 688, the abutment plate 688 can abut against the support plate 684 at the corresponding cavity 681 position, to ensure that the drive support 62 can simultaneously inflate the cabinet 1 to form high pressure during the downward movement. The gear plate 67 has a through groove at the position corresponding to the two support plates 684, and the guide wheel 687 is rotatably installed in the two grooves. The base 64 also has a reset component 689 installed on one side, and the reset component 689 and one of the support plates 684 are fixedly connected by a rope 686 wound around the two guide wheels 687.

[0037] Furthermore, the second reset component 689 includes a horizontal plate fixed to one side of the base 64. A square column is fixedly provided on the top of the horizontal plate. An L-shaped frame is movably sleeved on the outside of the square column. A through hole is provided in the middle of one side of the L-shaped frame. One end of the support plate 684 corresponding to the second cavity 682 passes through the through hole and is in contact with the surface of the corresponding vertical plate 66. One end of the second rope 686 is fixedly connected to the bottom of the L-shaped frame. A reset spring 3 is also sleeved on the outside of the square column to fix and connect the horizontal plate and the L-shaped frame. When the reset spring 3 is in its natural state, the lower end face of the corresponding support plate 684 is in contact with the lower end face of the cavity inside the through hole, and the bottom end face of the other support plate 684 is in contact with the upper end face of the abutment plate 688.

[0038] It should be noted that during the downward movement of the support 62 driven by the cylinder 65, one of the support plates 684 is blocked by the abutment plate 688. As the base 64 moves downward synchronously with the support 62, the support plate 684 will gradually move upward under the obstruction of the abutment plate 688, and push the corresponding piston column 685 to move upward synchronously, so as to force the gas inside the cavity 1 681 into the cabinet 1. At the same time, the upward movement of the support plate 684 will also pull the corresponding end of the rope 2 686 to move upward synchronously. The other end of the rope 2 686 will pull the L-shaped frame to move downward along the square column and compress the corresponding return spring 3. Before the L-shaped frame moves down to the point where the upper end face of its perforated cavity contacts the upper surface of the corresponding support plate 684, the piston column 685 inside the cavity 2 682 will not move downward under the action of the corresponding return spring 2. In this way, the impact test of the cabinet 1 under high pressure can be achieved. When the L-shaped frame moves down until the upper end face of its perforated inner cavity contacts the upper surface of the corresponding support plate 684, as the abutment plate 688 continues to press against the corresponding support plate 684 and moves upward, the L-shaped frame connected to the other end of the second rope 686 will push the support plate 684 at its position downward and drive the piston column 685 inside the second cavity 682 to move downward, which can realize the extraction of gas from the cabinet 1. Since the extraction volume is greater than the supply volume to the cabinet 1, the piston column 685 inside the second cavity 682, which continues to move downward, will draw the cabinet 1 into a negative pressure state. In this way, the cabinet 1 under negative pressure can be subjected to impact testing.

[0039] In summary, this production testing equipment can be used to sequentially perform impact tests on cabinet 1 under normal pressure, high pressure, and negative pressure conditions. The rate of air pressure change detected by the pressure sensor integrated inside cabinet 1 after the impact can be used to provide feedback on the sealing performance of cabinet 1 under different internal pressure conditions. The structural changes on the outer surface of cabinet 1 can provide feedback on the impact resistance performance of cabinet 1.

[0040] Example 3: Refer to the appendix of the instruction manual. Figures 9-10This embodiment is the third embodiment of the present invention. This embodiment differs from the second embodiment in that the clamping assembly 8 includes a second spur gear 81 rotatably mounted on the top of the rotary seat 61 via a rotating rod, and two limiting rods 82 fixed to the top of the rotary seat 61. The second spur gear 81 is driven to rotate by a power device fixedly mounted on the top of the rotary seat 61. This power device is the same as the aforementioned power device that drives the vertical shaft 72 to rotate, and will not be described in detail here. A ring plate 83 is provided between the two limiting rods 82, and a through-hole is provided on the ring plate 83. Two arc-shaped slots 84 and two limiting rods 82 are respectively movably inserted into the corresponding arc-shaped slots 84. The two limiting rods 82 can be used to limit the ring plate 83 without affecting the rotation of the ring plate 83. Four clamps 86 evenly distributed in a ring are also movably installed on the top of the rotating seat 61. A set of tooth blocks that mesh with the spur gear 81 is fixedly provided on the inner side of the ring plate 83 at the position corresponding to the second spur gear 81. Four protruding plates 85 for pushing the corresponding clamps 86 closer to the cabinet 1 are also fixedly provided on the inner side of the ring plate 83.

[0041] It should be noted that after placing the cabinet 1 to be tested inside the recessed cavity at the top of the support 62, and inserting the round tube 63 into the hole 3 at the bottom of the cabinet 1, the power device drives the second spur gear 81 to rotate. Then, the rotating second spur gear 81 drives the ring plate 83 to rotate, thereby using the convex plate 85 that rotates synchronously with the ring plate 83 to squeeze the corresponding clamps 86, so that the four clamps 86 move centripetally synchronously, thus completing the clamping of the target cabinet 1.

[0042] Furthermore, such as Figure 10 and Figure 12 As shown, the chuck 86 includes a dovetail groove 864 formed on the top of the rotary seat 61. A slide seat 861 is slidably installed inside the dovetail groove 864. A spring 862 is fixedly connected between the portion of the slide seat 861 located inside the dovetail groove 864 and the inner cavity end face of the dovetail groove 864. A U-shaped clamping plate 863 is fixedly provided on the top of each slide seat 861, and a rotating roller is rotatably installed inside the U-shaped clamping plate 863. This rotation is driven by a drive motor fixedly installed on the outside of the corresponding U-shaped clamping plate 863.

[0043] It should be noted that during the process of changing the internal pressure state of the cabinet 1 by driving the support 62 downward through the cylinder 65, the drive motor will also drive the roller at the corresponding position to rotate. This not only allows the cabinet 1 to always have the power to move downward through the rotating roller, preventing upward displacement during the inflation process and thus disrupting the high pressure state generated by inflation, but also reduces the resistance encountered by the cabinet 1 when it moves downward with the support 62.

[0044] The working principle of the above-mentioned production testing equipment is as follows: The cabinet 1 to be tested is placed inside the recessed cavity at the top of the support 62, and the rotating spur gear 81 drives the ring plate 83 to rotate. The convex plate 85, which rotates synchronously with the ring plate 83, squeezes the corresponding clamps 86, causing the four clamps 86 to move centripetally synchronously and clamp the target cabinet 1. Then, the corresponding power device drives the vertical shaft 72 to rotate, and the belt drives the vertical shaft 73 to rotate synchronously. The bevel gear 75 at the end of the vertical shaft 72 drives the intermittent impact mechanism 5 to intermittently impact the cabinet 1. At the same time, the incomplete toothed column 74 at the end of the vertical shaft 73 drives the lifting and rotating mechanism. Mechanism 6 performs intermittent rotation, allowing the cabinet 1 to switch between adjacent sides, thereby enabling sequential impact testing of the four sides of the cabinet 1. After completing the impact testing of the four sides at the current horizontal height of the cabinet 1, the support 62 can be driven downward by cylinder 65. On the one hand, this allows for impact testing of the four sides of the cabinet 1 at different horizontal heights, and the structural changes (such as dents) on the outer surface of the cabinet 1 can provide feedback on the impact resistance performance of the cabinet 1. On the other hand, it can also sequentially perform impact testing of the cabinet 1 under normal pressure, high pressure, and negative pressure conditions, and the sealing performance of the cabinet 1 under different internal pressure conditions can be fed back based on the rate of change of air pressure inside the cabinet 1 after the impact.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A cable branch box, characterized in that, The cable branch box includes: The cabinet (1) has a hole (3) at the bottom end that communicates with the inner cavity of the cabinet (1), and a pad (2) is fixedly provided on the periphery of the cabinet (1).

2. A production and testing device for a cable branch box, wherein the production and testing device is used to test the cable branch box as described in claim 1, characterized in that, The production testing equipment includes: The frame (4) is equipped with an intermittent impact mechanism (5) and a lifting and rotating mechanism (6) at both ends. A clamping assembly (8) is installed at the upper end of the lifting and rotating mechanism (6). The cabinet (1) is fixedly installed at the top of the lifting and rotating mechanism (6) through the clamping assembly (8). A linkage assembly (7) is installed at the bottom of the frame (4). The intermittent impact mechanism (5) and the lifting and rotating mechanism (6) move through the linkage assembly. The intermittent impact mechanism (5) consists of a rotating part (51) and an impact part (52). The linkage component (7) is used to drive the rotating part (51) and the lifting and rotating mechanism (6) to rotate periodically. Under the periodic rotation of the rotating part (51), the impact part (52) intermittently impacts the side of the cabinet (1). The cabinet (1) intermittently changes its surface under the periodic rotation of the lifting and rotating mechanism (6).

3. The production and testing equipment for a cable branch box according to claim 2, characterized in that, The linkage component (7) includes a horizontal seat (71) fixed on the frame (4). A second vertical shaft (73) is mounted in the middle of the horizontal seat (71) through a bearing. A first vertical shaft (72) is mounted in the frame (4) through a bearing. A driving wheel and a second bevel gear (75) are fixedly sleeved at both ends of the first vertical shaft (72). A driven wheel and an incomplete toothed column (74) are fixedly sleeved at both ends of the second vertical shaft (73). The driving wheel and the driven wheel are arranged horizontally and coplanarly, and the driving wheel and the driven wheel are connected by belt drive.

4. The production and testing equipment for a cable branch box according to claim 3, characterized in that, The rotating part (51) is fixed to the side plate (511) at the top of the frame (4). The top of the side plate (511) is rotatably mounted with a ring cylinder (513) through a bearing. One end of the ring cylinder (513) is fixedly connected to a bevel gear (514) that meshes with the bevel gear (75). The other end of the ring cylinder (513) is rotatably mounted with a turntable (5116) through a bearing. A straight rod (5118) is fixedly provided on the edge of the turntable (5116) away from the side plate (511). A rope belt (5110) is fixedly connected to the turntable (5116).

5. The production and testing equipment for a cable branch box according to claim 4, characterized in that, The rotating part (51) also includes a stand (512) fixed on the top of the frame (4) and arranged vertically and coplanarly with the turntable (5116). One end of the stand (512) is provided with a T-shaped arc groove (5112). An arc-shaped toothed plate (5113) is movably inserted inside the T-shaped arc groove (5112). A spur gear (5115) for driving the arc-shaped toothed plate (5113) to enter and exit the T-shaped arc groove (5112) is rotatably installed inside the T-shaped arc groove (5112) near the groove opening. A wedge block (5114) is fixedly connected to one end of the arc-shaped toothed plate (5113) extending to the outside of the T-shaped arc groove (5112). An arc rod (5111) that movably passes through the wedge block (5114) is also fixed on the stand (512).

6. The production and testing equipment for a cable branch box according to claim 5, characterized in that, The rotating part (51) also includes a cylinder (515) movably sleeved inside the end of the ring cylinder (513) away from the bevel gear (514). A lever (5117) is fixedly connected to one end of the cylinder (515) extending to the outside of the ring cylinder (513). A fixed ring (516) is fixedly sleeved at one end of the outer side of the ring cylinder (513) near the turntable (5116). A movable ring (517) is movably sleeved at one end of the outer side of the ring cylinder (513) near the side plate (511). A spring (518) sleeved on the outside of the ring cylinder (513) is fixedly connected between the movable ring (517) and the fixed ring (516). A through groove is opened on the outer side of the ring cylinder (513). A protrusion (519) is fixedly slidably connected inside the through groove between the movable ring (517) and the cylinder (515).

7. The production and testing equipment for a cable branch box according to claim 4, characterized in that, The impact part (52) includes a slide frame (521) fixed to the top of the frame (4). A slide table (522) is slidably installed on the slide frame (521), and the slide table (522) is fixedly connected to one end of a rope (5110). A reset member (523) is provided between the slide table (522) and the slide frame (521), and an impact head is installed on the slide table (522).

8. The production and testing equipment for a cable branch box according to claim 3, characterized in that, The lifting and shifting mechanism (6) includes a rotating seat (61) that is rotatably mounted on the frame (4) in a through manner. A square channel is opened through the center of the rotating seat (61), and a support (62) is movably fitted inside the square channel. An air cavity is opened at the bottom of the support (62), and a round tube (63) connected to the air cavity is fixedly provided at the bottom of the inner cavity of the support (62). The support (62) is also fixedly provided with a base (64) at the bottom. The bottom end of the base (64) is fixedly connected with a toothed disc (67) that meshes with the incomplete toothed column (74). The bottom end of the rotating seat (61) is fixedly provided with two vertical plates (66) that can move through the toothed disc (67). A cylinder (65) is fixedly installed between the support (62) and the rotating seat (61). The bottom end of the base (64) is also provided with an adjustment component (68).

9. The production and testing equipment for a cable branch box according to claim 8, characterized in that, The adjustment assembly (68) includes a first cavity (681) and a second cavity (682) opened on the base (64). The top of the first cavity (681) and the second cavity (682) are provided with air holes that communicate with the air chambers. The piston column (685) is movably sleeved inside the first cavity (681) and the second cavity (682). The bottom end of the two piston columns (685) is fixedly connected to the support plate (684). The bottom ends of both sides of the base (64) are provided with guide grooves (683) for restricting the linear movement of the corresponding support plate (684). One of the piston columns (685) is fitted with a return spring 1 at a position outside the cavity 1 (681) on the outside, and another piston column (685) is fitted with a return spring 2 at a position inside the cavity 2 (682) on the outside. A stop plate (688) is fixedly provided on the side of the vertical plate (66) near the cavity 1 (681). A slot is provided through the gear plate (67) at the position corresponding to the two support plates (684). A guide wheel (687) is rotatably installed in the two slots. A reset component 2 (689) is also installed on one side of the base (64). A rope belt 2 (686) wrapped around the two guide wheels (687) is fixedly connected between the reset component 2 (689) and one of the support plates (684).

10. The production and testing equipment for a cable branch box according to claim 8, characterized in that, The clamping assembly (8) includes a spur gear II (81) rotatably mounted on the top of the turntable (61) via a rotating rod and two limiting rods (82) fixed on the top of the turntable (61). A ring plate (83) is provided between the two limiting rods (82). Two arc-shaped through slots (84) are opened through the ring plate (83). The two limiting rods (82) are respectively movably inserted into the corresponding arc-shaped through slots (84). Four clamps (86) evenly distributed in a ring are also movably mounted on the top of the turntable (61). A set of tooth blocks that mesh with the spur gear II (81) is fixedly provided on the inner side of the ring plate (83) at the position corresponding to the spur gear II (81). Four protrusions (85) for pushing the corresponding clamps (86) closer to the cabinet (1) are also fixedly provided on the inner side of the ring plate (83).

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