Buried cable branch box facilitating lifting

Abstract

The application discloses a buried cable branch box convenient to lift, which comprises a pop-up mechanism, a lifting mechanism, a cable winding mechanism and a buckle mechanism. The pop-up mechanism comprises a back plate A, a base, a slide rod A and a side plate, a supporting rod A, a supporting rod B, a tension spring A, a bottom plate, a slide rod B, a back plate B and a connecting block. The base is provided with two base parts which are fixedly connected with the lower sides of the back plate A. The base is fixedly installed on the ground. The slide rod A is provided with two slide rod parts which are fixedly connected with the inner sides of the two base parts. The side plate is provided with two side plate parts which are slidingly installed on the slide rod A. The two side plate parts are connected with the bottom plate through supporting rods. The cable branch box can be lowered below the ground through the lifting mechanism, so that the ground space is greatly saved. When the cable branch box needs to be lifted, the cable branch box can be lifted to the ground through the pop-up mechanism and the lifting mechanism, so that the cable branch box is convenient to check and maintain.

Description

Technical Field

[0001] This invention relates to the field of power engineering technology, and in particular to a buried cable branch box that is easy to lift and lower. Background Technology

[0002] Power lines contain a large number of cables, and as cable lines continue to grow, the number of cables also increases, making efficient cable connections a challenge. Typically, when a relatively small number of independent load cables are concentrated in a specific area, cable distribution boxes can be used to connect multiple branches of the cables, making the connection process more convenient and simple. Cable distribution boxes also effectively protect the cables.

[0003] The existing technology, patent number 201810027632.5, describes a cable branch box comprising a box body, a support plate, an airflow generating section, and an airflow diffusion device. The box body has a receiving cavity. The support plate divides the receiving cavity into an airflow conveying space and a cable placement space along the direction from the bottom wall to the top wall. The airflow generating section is configured to reciprocate along the direction from the second end to the first end. The airflow diffusion device is movably mounted on the support plate, with multiple airflow diffusion holes facing the airflow conveying space and the cable placement space, respectively. When the airflow diffusion device reciprocates, outside air is drawn in through the air inlet, causing airflow to enter the airflow conveying space and act on the airflow diffusion device, thus allowing the airflow diffusion device to move on the support plate. This cable branch box is used for multi-branch connections of cables, and through this cable branch box, the cables can be kept in a dry environment, ensuring the normal operation of the cables.

[0004] Existing cable distribution boxes have the function of drying the internal space, but they occupy a large amount of ground space, which affects the spatial layout of other ground projects. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a buried cable branch box that is easy to lift and lower. This device can lower the cable branch box below ground level through a lifting mechanism, greatly saving ground space. When it needs to be raised, the cable branch box can be raised to the ground level through a pop-out mechanism and a lifting mechanism, facilitating inspection and maintenance.

[0006] The technical solution used in this invention is: a buried cable branch box that is easy to lift and lower, including a pop-out mechanism, a lifting mechanism, a cable winding mechanism, and a snap-fit ​​mechanism;

[0007] The pop-out mechanism includes: a back plate A, a base, a slide rod A and a side plate, a support rod A, a support rod B, a tension spring A, a bottom plate, a slide rod B, a back plate B, and a connecting block;

[0008] There are two bases, each fixedly connected to the lower sides of the back plate A; the bases are fixedly installed in the ground; there are two slide rods A, each fixedly connected to the inner side of the two bases; there are two side plates, each slidably mounted on the slide rods A; the two side plates are connected to the base plate via support rods; tension springs A are installed inside the two side plates.

[0009] The support rod includes support rod A and support rod B; support rod A and support rod B are rotatably connected at their middle parts; the lower end of support rod A is rotatably mounted on the left side plate; the upper end of support rod A is rotatably mounted on the base plate; the lower end of support rod B is rotatably mounted on the right side plate; the upper end of support rod B is rotatably mounted on the base plate; the rear end of the base plate is fixedly connected to two connecting blocks, and the two connecting blocks are slidably connected to the sliding grooves on the back plate A respectively; two sliding rods B are fixedly installed at the front end of the base plate, and a back plate B is fixedly installed at the rear end of the base plate.

[0010] The lifting mechanism includes a housing and slide rails; the slide rails at both ends of the back of the housing are slidably installed on the slide grooves at both ends of the back plate B; a boss is provided on the lower end of the front of the housing, and the round hole on the boss is slidably connected to the slide rod B; the cable winding mechanism is installed inside the housing; the buckle mechanism is inserted between the housing and the bottom plate.

[0011] Preferably, the lifting mechanism further includes: a bracket A, a long plate, a handle, and a lifting unit;

[0012] The bracket A is fixedly installed on the upper surface of the base plate; a long plate is slidably installed in the groove of the bracket A, and teeth are provided on the groove of the bracket A. Teeth are also provided on both sides of the protrusion at the lower end of the long plate. The teeth on the protrusion of the long plate mesh with the teeth on the bracket A; the handle is fixedly installed at the top end of the long plate; the lifting unit is used to lift the box.

[0013] Preferably, the lifting unit includes a handle, a rocker arm, roller A, a belt, connecting rod A, connecting rod B, slider A, slider B, roller B, gear B, and rack; one end of the handle is rotatably mounted in a groove on the rocker arm, and the shaft of the rocker arm is rotatably mounted in a round hole near the upper part of the long plate; roller A is fixedly connected to the shaft of the rocker arm, and roller A is connected to small rollers on slider A and slider B, as well as roller B, via a belt; a transverse groove on the back plate B is slidably connected to slider A and slider B; a round hole on the back plate B is rotatably connected to the shaft of roller B; the upper ends of connecting rod A and connecting rod B are rotatably connected to the shaft of the rocker arm, the lower end of connecting rod A is rotatably connected to a short shaft on slider B, and the lower end of connecting rod B is rotatably connected to a short shaft on slider A; gear B is fixedly connected to the shaft of roller B, and gear B meshes with the rack; the rack is fixedly connected to the back of the housing.

[0014] Preferably, it further includes a limiting mechanism, which includes a bidirectional pawl, a tension spring B, and a gear A; the gear A is fixedly mounted on the shaft of the rocker arm; the bidirectional pawl has a circular hole in the middle, which is rotatably connected to a short shaft on the long plate; the lower end of the tension spring B is fixedly connected to a short rod on the lower end of the bidirectional pawl; the upper end of the tension spring B is fixedly connected to a short shaft on the long plate located above the bidirectional pawl; the gear A cooperates with the bidirectional pawl.

[0015] Preferably, the cable winding mechanism includes: bracket B, pulley A, and pulley B;

[0016] There are two brackets B, which are fixedly installed on two bases respectively. A pulley A is rotatably installed on each bracket B. A set of pulleys is installed on both sides of the box, and each set of pulleys includes two pulleys B. The cable passes between the two pulleys B.

[0017] Preferably, the cable winding mechanism further includes: a bracket C, a winding wheel A, a cable branching module, a bracket D, and a winding wheel B;

[0018] There are two brackets C, which are fixedly installed on the upper part of the box body. The winding wheel A is rotatably installed on the shaft of the bracket C. The cable branch module is fixedly installed on the rear end face of the inner wall of the box body. Two brackets D are fixedly installed inside the box body. The brackets D are located below the brackets C. The winding wheel B is rotatably installed on the bracket D. The main cable is wound on the winding wheel A and communicates with the cable branch module. The branch cable is wound on the winding wheel B and communicates with the cable branch module.

[0019] Preferably, the winding reel A and the winding reel B are provided with a conductive mechanism; the conductive mechanism includes: a conductive ring A and a conductive ring B;

[0020] The conductive ring A is fixedly installed inside the winding wheel A. The conductive ring A is connected to the conductive ring B. The conductive ring A is connected to the main cable. The conductive ring B is installed in the circular hole of the shaft at one end of the bracket C. The conductive ring B is fixedly connected to one end of the transition cable. The other end of the transition cable is connected to the cable branch module.

[0021] Preferably, the winding wheel A and the winding wheel B are further provided with a tensioning mechanism; the tensioning mechanism includes a coil spring; one end of the coil spring is fixedly connected to the winding wheel A, and the other end of the coil spring is fixedly connected to the rotating shaft on the bracket C.

[0022] Preferably, the buckling mechanism includes: a knob, a telescopic rod, a sleeve, a cross plate, and a slot;

[0023] The knob is fixedly connected to the top of the telescopic rod, the upper end of the telescopic rod is rotatably installed in the round hole on the top of the box, the telescopic rod is slidably installed in the sleeve, the sleeve passes through the round hole at the bottom of the box and is rotatably connected to the round hole on the base plate, and the lower end of the sleeve is fastened to the slot; the horizontal plate is fixedly connected to the inner side of the two bases, and a slot is fixedly installed in the middle of the horizontal plate.

[0024] Preferably, the slide bar A is provided with a frustum, which is used to prevent the side plate from sliding.

[0025] The advantages of this invention compared to the prior art are:

[0026] 1. This invention provides an underground cable branch box that is easy to lift and lower. The device can lower the cable branch box below ground through a lifting mechanism, which greatly saves ground space. When it needs to be lifted up, the cable branch box can be raised to the ground through a pop-out mechanism and a lifting mechanism, which facilitates inspection and maintenance.

[0027] 2. This invention sets up a lifting mechanism by using a crank handle to rotate a rocker arm, thereby causing the housing to rise slowly. Compared with an automatic lifting mechanism, it has the advantage of allowing for real-time observation of the internal cables. If there is cable damage, jamming, or leakage, the system can stop immediately to prevent danger.

[0028] 3. The present invention can pop the box out of the ground by setting a pop-out mechanism, revealing a manual operation crank, which facilitates the lifting mechanism to raise and lower the box.

[0029] 4. The present invention enables gear A to rotate in one direction by setting a bidirectional ratchet. When the upper left side of the bidirectional ratchet is engaged with the rocker arm, gear A can only rotate clockwise. When the upper right side of the bidirectional ratchet is engaged with the rocker arm, gear A can only rotate counterclockwise.

[0030] 5. The present invention provides a mechanism by which the lower end of the sleeve engages with the slot; when not in use, the lower end of the sleeve engages with the slot to lock the entire device in a locked state. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention in its underground state.

[0032] Figure 2 This is a schematic diagram of the overall structure of the present invention in the state above the ground.

[0033] Figure 3 This is a schematic diagram of the lifting mechanism of the present invention.

[0034] Figure 4 This is a schematic diagram of the pop-out mechanism of the present invention.

[0035] Figure 5 This is a schematic diagram of the backplate B structure of the present invention.

[0036] Figure 6 This is a schematic diagram of the support rod A structure of the present invention.

[0037] Figure 7 This is a schematic diagram of the backplate A structure of the present invention.

[0038] Figure 8 This is a schematic diagram of the support structure A of the present invention.

[0039] Figure 9 This is a schematic diagram of the box structure of the present invention.

[0040] Figure 10 This is a magnified view of part A of the present invention.

[0041] Figure 11 This is a schematic diagram of the connecting rod B structure of the present invention.

[0042] Figure 12 This is a schematic diagram of the rack structure of the present invention.

[0043] Figure 13 This is a schematic diagram of the support structure B of the present invention.

[0044] Figure 14 This is a schematic diagram of the support structure C of the present invention.

[0045] Figure 15 This is a schematic diagram of the support structure D of the present invention.

[0046] Figure 16 This is a schematic diagram of the winding wheel A structure of the present invention.

[0047] Figure 17 This is a schematic diagram of the cable branch module structure of the present invention.

[0048] Figure 18 This is a schematic diagram of the buckling mechanism of the present invention.

[0049] Attached icon number

[0050] 1-Pop-up mechanism; 2-Lifting mechanism; 3-Cable winding mechanism; 4-Snapping mechanism; 101-Back plate A; 102-Base; 103-Slide rod A; 104-Side plate; 105-Support rod A; 106-Support rod B; 107-Tension spring A; 108-Base plate; 109-Slide rod B; 110-Back plate B; 111-Connecting block; 201-Box body; 202-Slide rail; 203-Bracket A; 204-Long plate; 205-Dual-direction pawl; 206-Tension spring B; 207-Crank handle; 208-Crank lever; 209-Gear A; 210-Handle; 211- Roller A; 212-Belt; 213-Linking rod A; 214-Linking rod B; 215-Slider A; 216-Slider B; 217-Roller B; 218-Gear B; 219-Rack; 301-Bracket B; 302-Pulley A; 303-Pulley B; 304-Bracket C; 305-Winding wheel A; 306-Cable branch module; 307-Bracket D; 308-Winding wheel B; 309-Spring; 310-Conductive coil A; 311-Conductive coil B; 401-Knob; 402-Telescopic rod; 403-Sleeve; 404-Horizontal plate; 405-Slot. Detailed Implementation

[0051] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0052] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0053] It should be noted that in this article, the naming conventions, such as "...A" and "...B" or "...a" and "...b", are used only to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0054] Implementation, for example Figure 1-18As shown, a buried cable branch box that is easy to lift and lower includes a pop-out mechanism 1, a lifting mechanism 2, a cable winding mechanism 3, and a snap-fit ​​mechanism 4.

[0055] The pop-out mechanism 1 includes: a back plate A101, a base 102, a slide bar A103 and a side plate 104, a support rod A105, a support rod B106, a tension spring A107, a base plate 108, a slide bar B109, a back plate B110 and a connecting block 111;

[0056] There are two bases 102, which are fixedly connected to the lower sides of the back plate A101 respectively; the bases 102 are fixedly installed in the ground; there are two slide rods A103, whose two ends are fixedly connected to the inner sides of the two bases 102 respectively; there are two side plates 104, which are slidably installed on the slide rods A103; the two side plates 104 are connected to the base plate 108 through support rods; tension springs A107 are installed inside the two side plates 104;

[0057] The support rod includes support rod A105 and support rod B106; support rod A105 and support rod B106 are rotatably connected at the middle; the lower end of support rod A105 is rotatably mounted on the left side plate 104; the upper end of support rod A105 is rotatably mounted on the base plate 108; the lower end of support rod B106 is rotatably mounted on the right side plate 104; the upper end of support rod B106 is rotatably mounted on the base plate 108; the rear end of the base plate 108 is fixedly connected to two connecting blocks 111, and the two connecting blocks 111 are slidably connected to the sliding grooves on the back plate A101 respectively; two sliding rods B109 are fixedly installed at the front end of the base plate 108, and a back plate B110 is fixedly installed at the rear end of the base plate 108; preferably, a frustum is provided on the sliding rod A103, and the frustum is used to prevent the side plate 104 from sliding.

[0058] The lifting mechanism 2 includes a housing 201 and a slide rail 202; the slide rails 202 at both ends of the back of the housing 201 are slidably installed on the slide grooves at both ends of the back plate B110; a boss is provided on the lower end of the front of the housing 201, and the round hole on the boss is slidably connected to the slide rod B109; the cable winding mechanism 3 is installed inside the housing 201; the buckling mechanism 4 is inserted between the housing 201 and the base plate 108.

[0059] The function of the pop-out mechanism 1 is to pop up the base plate 108, that is, to pop up the box 201, so that the handle 210 is exposed to the ground, thus facilitating the next manual operation. The function of the lifting mechanism 2 is to manually crank the rocker arm 208, which ultimately drives the box 201 to rise and fall. The function of the cable winding mechanism 3 is to extend or shorten the cable simultaneously when the box 201 is raised and lowered, to prevent the internal cable from getting tangled. The function of the latching mechanism 4 is to lock the equipment when it is not in use or to release it when the equipment is started to be used.

[0060] Specifically, when the pop-out mechanism 1 is working, under the tension of the tension spring A107, it drives the side plate 104 to slide towards the middle, thereby squeezing the support rod A105 and the support rod B106, thereby driving the base plate 108 to rise. Because the truncated cone on the slide rod A103 makes its middle thicker, the side plate 104 is forced to stop after sliding a certain distance, thereby stopping the base plate 108 from rising. The bracket A203 on the base plate 108 also rises and stops accordingly, thus causing the bracket A203 to protrude from the ground, that is, the long plate 204 to protrude from the ground.

[0061] In one optional embodiment of the present invention, such as Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 As shown, the lifting mechanism 2 also includes: bracket A203, long plate 204, handle 210 and lifting unit;

[0062] A bracket A203 is fixedly installed on the upper surface of the base plate 108; a long plate 204 is slidably installed in the groove of the bracket A203. The groove of the bracket A203 has teeth, and the protrusion at the lower end of the long plate 204 also has teeth on both sides. The teeth on the protrusion of the long plate 204 mesh with the teeth on the groove of the bracket A203; a handle 210 is fixedly installed at the top of the long plate 204; a lifting unit is used to lift the housing 201. A certain external force is used to drive the long plate 204 to slide within the bracket A203. The teeth on the bracket A203 and the long plate 204 can be corrugated teeth; when the external force is removed, the meshing between the corrugated teeth allows the bracket A203 and the long plate 204 to remain relatively stationary.

[0063] Preferably, the lifting unit includes a crank handle 207, a rocker arm 208, a roller A211, a belt 212, a connecting rod A213, a connecting rod B214, a slider A215, a slider B216, a roller B217, a gear B218, and a rack 219. One end of the crank handle 207 is rotatably mounted in a groove on the rocker arm 208, and the shaft of the rocker arm 208 is rotatably mounted in a round hole near the upper part of the long plate 204. The roller A211 is fixedly connected to the shaft of the rocker arm 208, and the roller A211 is connected via the belt 212 to the small rollers on the sliders A215 and B216, as well as the roller B217. Connections: The transverse groove on the back plate B110 is slidably connected to sliders A215 and B216; the round hole on the back plate B110 is rotatably connected to the shaft of roller B217; the upper ends of connecting rods A213 and B214 are rotatably connected to the shaft of rocker arm 208, the lower end of connecting rod A213 is rotatably connected to the short shaft on slider B216, and the lower end of connecting rod B214 is rotatably connected to the short shaft on slider A215; gear B218 is fixedly connected to the shaft of roller B217, and gear B218 meshes with rack 219; rack 219 is fixedly connected to the back of housing 201. Preferably, it also includes a limiting mechanism, which includes a bidirectional pawl 205, a tension spring B206, and a gear A209; the gear A209 is fixedly mounted on the shaft of the rocker arm 208; the bidirectional pawl 205 has a round hole in the middle, which is rotatably connected to a short shaft on the long plate 204; the lower end of the tension spring B206 is fixedly connected to a short rod on the lower end of the bidirectional pawl 205; the upper end of the tension spring B206 is fixedly connected to a short shaft on the long plate 204 located above the bidirectional pawl 205; the gear A209 cooperates with the bidirectional pawl 205. The tension spring B206 generates tension, and its function is to provide an offset constraint force to the bidirectional pawl 205, so that the bidirectional pawl 205 is always offset to one side. When the lower end of the bidirectional pawl 205 is manually moved to offset it to the other side, the tension spring B206 will provide a constraint force on the other side. The function of the bidirectional pawl 205 is to make the gear A209 rotate in one direction. When the upper left side of the bidirectional pawl 205 is engaged with the rocker arm 208, the gear A209 can only rotate clockwise. When the upper right side of the bidirectional pawl 205 is engaged with the rocker arm 208, the gear A209 can only rotate counterclockwise. The handle 210 is fixedly installed at the top of the long plate 204. The function of the handle 210 is to manually lift the long plate 204.

[0064] Specifically, during lifting, manually pull up handle 210 until it stops at a suitable position for the person's body. At this time, roller A211 is also raised. Since roller B217 is stationary, the lower ends of connecting rod A213 and connecting rod B214 are squeezed together by belt 212. Then, unfold handle 207 and turn handle 207 clockwise, which drives roller A211 to rotate, which in turn drives roller B217 to rotate. Roller B217 drives gear B218 to rotate, and gear B218 drives rack 219 to slide upward, which in turn drives housing 201 to slide upward until it reaches a suitable maintenance height. When turning handle 208, one side of the upper end of the double-sided pawl 205 locks gear A209, which prevents gear A209 from rotating in the opposite direction, thus ensuring that housing 201 does not descend after being raised.

[0065] In one optional embodiment of the present invention, such as Figure 13 As shown, the cable winding mechanism 3 includes: bracket B301, pulley A302 and pulley B303;

[0066] There are two brackets B301, which are fixedly installed on two bases 102 respectively. A pulley A302 is rotatably installed on the bracket B301. A set of pulleys is installed on both sides of the housing 201, and each set of pulleys includes two pulleys B303. The cable passes between the two pulleys B303. The function of pulleys A302 and B303 is to protect the cable and prevent the cable sheath from being damaged when the cable changes position.

[0067] In one optional embodiment of the present invention, such as Figure 14 , Figure 15 As shown, the cable winding mechanism 3 also includes: bracket C304, winding wheel A305, cable branch module 306, bracket D307 and winding wheel B308;

[0068] There are two brackets C304, which are fixedly installed on the upper part of the inside of the housing 201. A winding wheel A305 is rotatably mounted on the shaft of bracket C304. The cable branch module 306 is fixedly installed on the rear end face of the inner wall of the housing 201. Two brackets D307 are fixedly installed inside the housing 201. Brackets D307 are located below brackets C304. A winding wheel B308 is rotatably mounted on bracket D307. The main cable is wound on the winding wheel A305 and communicates with the cable branch module 306. The branch cable is wound on the winding wheel B308 and... The main cable is wound on a winding wheel A305 and connected to a transition cable on the cable branch module 306 via a conductive mechanism. A branch cable is provided on the other side of the cable branch module 306. A copper plate is provided inside the cable branch module 306. The copper plate connects the transition cable and the branch cable. The two branch cables in front of the cable branch module 306 are wound on two winding wheels B308, and the extended branch cables pass through the round holes on the bottom surface of the housing 201 and the round holes on the bottom plate 108, thereby pulling out the branch cables for use.

[0069] In one optional embodiment of the present invention, such as Figure 16 , Figure 17 As shown, a conductive mechanism is provided on winding reels A305 and B308; the conductive mechanism includes a conductive ring A310 and a conductive ring B311; wherein, the conductive mechanism on winding reels A305 and B308 has the same structure.

[0070] Conductive ring A310 is fixedly installed inside the winding reel A305. Conductive ring A310 is connected to conductive ring B311 and is connected to the main cable. Conductive ring B311 is installed in the circular hole at one end of the bracket C304, and is fixedly connected to one end of the transition cable. The other end of the transition cable is connected to the cable branch module 306. Alternatively, conductive slip ring A310 can be used; this ensures that the main cable wound on the winding reel A305 is energized by conductive ring B311 when rotating, guaranteeing power transmission.

[0071] Preferably, a tensioning mechanism is also provided on the winding reel A305 and the winding reel B308; the tensioning mechanism includes a coil spring 309; one end of the coil spring 309 is fixedly connected to the winding reel A305, and the other end of the coil spring 309 is fixedly connected to the rotating shaft on the bracket C304. The function of the coil spring 309 is to provide a preload for the rotation of the winding reel A305, so that the wound cable can be wound and unwound freely; thus, the main cable wound on the winding reel A305 is energized with the conductive coil B311 when rotating, ensuring the transmission of power.

[0072] Specifically, as the enclosure 201 rises, the cable inside the enclosure 201 will extend, thereby driving the winding wheel A305 to rotate and releasing the cable wound on the winding wheel A305, thus ensuring the cable connection when the enclosure 201 rises to the ground.

[0073] In one optional embodiment of the present invention, such as Figure 18 As shown, the latching mechanism 4 includes: a knob 401, a telescopic rod 402, a sleeve 403, a horizontal plate 404, and a slot 405. The knob 401 is fixedly connected to the top end of the telescopic rod 402. The upper end of the telescopic rod 402 is rotatably installed in a round hole on the box 201. The telescopic rod 402 is slidably installed in the sleeve 403. The sleeve 403 passes through a round hole at the bottom of the box 201 and is rotatably connected to a round hole on the base plate 108. The lower end of the sleeve 403 is fastened to the slot 405. The horizontal plate 404 is fixedly connected to the inner side of the two bases 102. The slot 405 is fixedly installed in the middle of the horizontal plate 404. Specifically, the cover on the equipment is removed manually, and then the knob 401 is turned, which drives the telescopic rod 402 to rotate. The telescopic rod 402 drives the sleeve 403 to rotate, thereby causing the lower end of the sleeve 403 to disengage from the slot 405.

[0074] Working principle: When in use, the cable branch box can be hidden under the ground. The main cable enters the equipment from the right wall and exits from the left wall after branching, saving ground space. When maintenance is required, the equipment needs to be raised to the ground for operation.

[0075] First, the cover on the equipment is removed manually. Then, the knob 401 is turned, which drives the telescopic rod 402 to rotate. The telescopic rod 402 drives the sleeve 403 to rotate, causing the lower end of the sleeve 403 to disengage from the slot 405. Under the tension of the tension spring A107, the side plate 104 slides towards the middle, thereby squeezing the support rod A105 and the support rod B106, which in turn causes the base plate 108 to rise. Because the truncated cone on the sliding rod A103 makes its middle part thicker, the side plate 104 is forced to stop after sliding a certain distance, thus stopping the rise of the base plate 108. The bracket A203 on the base plate 108 also rises and stops accordingly, thus causing the bracket A203 to protrude from the ground, i.e., the long plate 204 to protrude from the ground.

[0076] Next, manually pull handle 210 until it stops at a suitable position for the body. At this point, roller A211 is also raised. Since roller B217 is stationary, the lower ends of connecting rods A213 and B214 move towards the center due to the compression caused by belt 212. Then, unfold handle 207 and turn it clockwise, which will cause roller A211 to rotate, thereby causing roller B217 to rotate. Roller B217 drives gear B218 to rotate, and gear B218 drives rack 219 to slide upward, thereby... The housing 201 slides upward until it reaches a suitable maintenance height. When the rocker arm 208 is turned, one side of the upper end of the bidirectional ratchet 205 engages the gear A209, preventing the gear A209 from rotating in the opposite direction. This ensures that the housing 201 does not descend after being raised. As the housing 201 rises, the cable inside the housing 201 extends, thereby driving the winding wheel A305 to rotate and releasing the cable wound on the winding wheel A305. This ensures that the cable remains connected when the housing 201 rises to the ground.

[0077] When the equipment needs to be returned to the ground, first move the bidirectional ratchet 205 to the other direction, so that the rocker arm 208 can only rotate counterclockwise. Turn the crank handle 207 counterclockwise, which drives the gear B218 to rotate. The gear B218 drives the rack 219 to slide downward, which in turn drives the housing 201 to slide downward until the housing 201 is lowered to the bottom plate 108. Next, fold the crank handle 207 back and manually press the handle 210 to lower the long plate 204 to the lowest position. Next, put the cover on the housing 201, and then stand in the middle of the cover. The weight of the person will drive the bottom plate 108 to descend. The descent of the bottom plate 108 will drive the sleeve 403 to descend. Finally, turn the knob 401, which will drive the telescopic rod 402 to rotate, which will drive the sleeve 403 to rotate. When the lower end of the sleeve 403 engages with the slot 405, the reset is completed.

Claims

1. A buried cable branch box that is easy to lift and lower, characterized in that: It includes a pop-out mechanism (1), a lifting mechanism (2), a cable winding mechanism (3), and a buckle mechanism (4); The pop-out mechanism (1) includes: a back plate A (101), a base (102), a slide bar A (103) and a side plate (104), a support rod A (105), a support rod B (106), a tension spring A (107), a bottom plate (108), a slide bar B (109), a back plate B (110), and a connecting block (111). There are two bases (102), and the two bases (102) are fixedly connected to the lower sides of the back plate A (101) respectively; the bases (102) are fixedly installed in the ground; there are two slide rods A (103), and the two ends of the slide rods A (103) are fixedly connected to the inner sides of the two bases (102) respectively; there are two side plates (104), and the two side plates (104) are slidably installed on the slide rods A (103); the two side plates (104) are connected to the base plate (108) through support rods; the tension springs A (107) are installed in the two side plates (104). The support rod includes support rod A (105) and support rod B (106); the support rod A (105) and support rod B (106) are rotatably connected at the middle; the lower end of support rod A (105) is rotatably mounted on the left side plate (104); the upper end of support rod A (105) is rotatably mounted on the base plate (108); the lower end of support rod B (106) is rotatably mounted on the right side plate (104); the upper end of support rod B (106) is rotatably mounted on the base plate (108); the rear end of the base plate (108) is fixedly connected to two connecting blocks (111), and the two connecting blocks (111) are slidably connected to the sliding grooves on the back plate A (101); two sliding rods B (109) are fixedly installed at the front end of the base plate (108), and a back plate B (110) is fixedly installed at the rear end of the base plate (108); The lifting mechanism (2) includes a housing (201) and a slide rail (202); the slide rails (202) at both ends of the back of the housing (201) are slidably installed on the slide grooves at both ends of the back plate B (110); a boss is provided on the lower end of the front of the housing (201), and the round hole on the boss is slidably connected to the slide rod B (109); the cable winding mechanism (3) is installed inside the housing (201); the buckle mechanism (4) is inserted between the housing (201) and the bottom plate (108).

2. The buried cable branch box with easy lifting and lowering as described in claim 1, characterized in that: The lifting mechanism (2) further includes: bracket A (203), long plate (204), handle (210) and lifting unit; The bracket A (203) is fixedly installed on the upper surface of the base plate (108); a long plate (204) is slidably installed in the groove of the bracket A (203), the groove of the bracket A (203) is provided with teeth, and the protrusion at the lower end of the long plate (204) is also provided with teeth on both sides, and the teeth on the protrusion of the long plate (204) mesh with the teeth on the groove of the bracket A (203); the handle (210) is fixedly installed at the top of the long plate (204); the lifting unit is used to lift the box (201).

3. The buried cable branch box with easy lifting and lowering according to claim 2, characterized in that: The lifting unit includes a crank handle (207), a rocker arm (208), roller A (211), a belt (212), a connecting rod A (213), a connecting rod B (214), a slider A (215), a slider B (216), roller B (217), a gear B (218), and a rack (219). One end of the crank handle (207) is rotatably mounted in a groove on the rocker arm (208). The shaft of the rocker arm (208) is rotatably mounted in a round hole near the top of the long plate (204). The roller A (211) is fixedly connected to the shaft of the rocker arm (208). At the same time, the roller A (211) is connected to the small rollers on slider A (215) and slider B (216) and roller B (217) via the belt (212). The back plate B (110) is connected to the transverse groove of the back plate B (110) and the slider A (215) and slider B (216) in a sliding connection; the round hole of the back plate B (110) is rotatably connected to the shaft of the roller B (217); the upper ends of the connecting rod A (213) and the connecting rod B (214) are rotatably connected to the shaft of the rocker arm (208), the lower end of the connecting rod A (213) is rotatably connected to the short shaft of the slider B (216), and the lower end of the connecting rod B (214) is rotatably connected to the short shaft of the slider A (215); the gear B (218) is fixedly connected to the shaft of the roller B (217), and the gear B (218) meshes with the rack (219); the rack (219) is fixedly connected to the back of the housing (201).

4. The buried cable branch box with easy lifting and lowering as described in claim 3, characterized in that: It also includes a limiting mechanism, which includes a bidirectional pawl (205), a tension spring B (206), and a gear A (209); the gear A (209) is fixedly mounted on the shaft of the rocker arm (208); the bidirectional pawl (205) has a round hole in the middle, which is rotatably connected to a short shaft on the long plate (204); the lower end of the tension spring B (206) is fixedly connected to a short rod on the lower end of the bidirectional pawl (205); the upper end of the tension spring B (206) is fixedly connected to a short shaft on the long plate (204) located above the bidirectional pawl (205); the gear A (209) cooperates with the bidirectional pawl (205).

5. A buried cable branch box that is easy to lift and lower according to claim 1, characterized in that: The cable winding mechanism (3) includes: bracket B (301), pulley A (302) and pulley B (303); There are two brackets B (301), and the two brackets B (301) are fixedly installed on two bases (102) respectively. A pulley A (302) is rotatably installed on the brackets B (301); a set of pulleys is installed on both sides of the box (201), and each set of pulleys includes two pulleys B (303); the cable passes between the two pulleys B (303).

6. A buried cable branch box that is easy to lift and lower according to claim 1, characterized in that: The cable winding mechanism (3) further includes: bracket C (304), winding wheel A (305), cable branch module (306), bracket D (307) and winding wheel B (308). There are two brackets C (304), which are fixedly installed on the upper part of the box (201). The winding wheel A (305) is rotatably installed on the shaft of the bracket C (304). The cable branch module (306) is fixedly installed on the rear end face of the inner wall of the box (201). Two brackets D (307) are fixedly installed inside the box (201). The brackets D (307) are located below the brackets C (304). The winding wheel B (308) is rotatably installed on the brackets D (307). The main cable is wound on the winding wheel A (305) and communicates with the cable branch module (306). The branch cable is wound on the winding wheel B (308) and communicates with the cable branch module (306).

7. A buried cable branch box that is easy to lift and lower according to claim 6, characterized in that: The winding reel A (305) and winding reel B (308) are provided with a conductive mechanism; the conductive mechanism includes: conductive ring A (310) and conductive ring B (311). The conductive ring A (310) is fixedly installed inside the winding wheel A (305). The conductive ring A (310) is connected to the conductive ring B (311). The conductive ring A (310) is connected to the main cable. The conductive ring B (311) is installed in the circular hole of the shaft at one end of the bracket C (304). The conductive ring B (311) is fixedly connected to one end of the transition cable. The other end of the transition cable is connected to the cable branch module (306).

8. A buried cable branch box that is easy to lift and lower according to claim 7, characterized in that: The winding wheel A (305) and winding wheel B (308) are also provided with a tensioning mechanism; the tensioning mechanism includes a coil spring (309); one end of the coil spring (309) is fixedly connected to the winding wheel A (305), and the other end of the coil spring (309) is fixedly connected to the rotating shaft on the bracket C (304).

9. A buried cable branch box that is easy to lift and lower according to claim 1, characterized in that: The buckling mechanism (4) includes: a knob (401), a telescopic rod (402), a sleeve (403), a horizontal plate (404), and a slot (405); The knob (401) is fixedly connected to the top of the telescopic rod (402). The upper end of the telescopic rod (402) is rotatably installed in the round hole on the box body (201). The telescopic rod (402) is slidably installed in the sleeve (403). The sleeve (403) passes through the round hole under the box body (201) and is rotatably connected to the round hole on the base plate (108). The lower end of the sleeve (403) is fastened to the slot (405). The horizontal plate (404) is fixedly connected to the inner side of the two bases (102). The slot (405) is fixedly installed in the middle of the horizontal plate (404).

10. A buried cable branch box that is easy to lift and lower according to claim 1, characterized in that: A frustum is provided on the slide bar A (103), which is used to prevent the side plate (104) from sliding.

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