A municipal pipe well construction auxiliary device

Abstract

The utility model relates to municipal pipe well construction technical field, and disclose a kind of municipal pipe well construction auxiliary device, including rack, the upper end of rack is provided with driving structure, the inside of rack is provided with transverse plate, the outside of transverse plate is slidably connected with sliding block. The utility model is provided with connecting disc and locking structure, locking hole and inclined slide groove are set on the upper surface of connecting disc, locking rod of locking structure keeps downward protruding state under the action of spring, manually rotates connecting disc and drives extraction rod synchronous rotation, when locking rod slides along inclined slide groove to locking hole position, spring completely releases elastic force and promotes locking rod to enter locking hole, extraction rod is locked in the state of rotation 90 °, solve the problem that extraction rod in the ascending process in prior art lacks self-locking function and occurs circumferential rotation and leads to the problem of clamping failure, avoid well lid accidental release in the process of lifting, improve operation efficiency and safety.

Description

Technical Field

[0001] This utility model relates to the field of municipal pipe well construction technology, specifically to an auxiliary device for municipal pipe well construction. Background Technology

[0002] Manhole covers are used to cover the openings of municipal manholes to prevent people or objects from accidentally falling in. In current technology, manhole covers are generally installed on the manhole opening by a direct snap-fit ​​method, with their sides tightly fitting against the inner wall of the manhole. This design not only uses the weight of the manhole cover itself to maintain stability, but also effectively reduces bouncing and displacement when vehicles run over it, thereby avoiding safety accidents caused by the manhole cover loosening or falling off the manhole opening. However, it is precisely because of this tightly fitting structure and the considerable weight of the manhole cover itself that when it is necessary to open the manhole cover for underground work or pipeline maintenance, it is difficult for operators to lift it directly by hand, and usually special auxiliary devices are needed.

[0003] The auxiliary device in the existing technology mainly consists of a frame and an inverted T-shaped extraction rod installed below it. In use, the extraction rod must first be inserted into the extraction hole of the manhole cover and rotated 90 degrees, so that its bottom crossbar engages with the inner wall of the manhole cover. Then, a drive mechanism raises the extraction rod, lifting the manhole cover. However, because the extraction rod lacks a self-locking function during the ascent, its bottom crossbar is prone to circumferential rotation, leading to engagement failure. This not only causes the manhole cover to accidentally come loose during lifting, affecting operational efficiency, but also may pose a threat to the safety of the operators. Utility Model Content

[0004] The purpose of this utility model is to provide an auxiliary device for the construction of municipal manholes, which solves the problem that in the existing auxiliary devices, the lack of a self-locking function of the extraction rod during the lifting process makes it easy for the extraction rod to rotate circumferentially, causing the crossbar to fail to lock with the inner wall of the manhole cover, resulting in the manhole cover accidentally loosening during the lifting process, affecting work efficiency and posing safety hazards.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to an auxiliary device for the construction of municipal manholes, comprising a frame, a drive structure at the upper end of the frame, a horizontal plate inside the frame, a slider slidably connected to the outer side of the horizontal plate, an extraction rod rotatably connected to the lower surface of the slider, a connecting plate installed on the outer side of the extraction rod, a locking hole and an inclined groove on the upper surface of the connecting plate, one end of the inclined groove communicating with the locking hole, and a locking structure at the lower end of the slider, one end of the locking structure being fitted into the locking hole.

[0006] Furthermore, the locking structure includes a sleeve fixedly installed on the lower surface of the slider, a cover plate installed at the lower end of the sleeve, a movable block slidably connected inside the sleeve, a spring installed on the upper surface of the movable block, the other end of the spring fixedly installed on the inner top of the sleeve, a locking rod provided on the lower surface of the movable block, and the end of the locking rod away from the movable block passing through the cover plate and fitted inside the locking hole.

[0007] Furthermore, the inner wall of the sleeve is provided with a limiting groove, the outer side of the moving block is provided with a limiting block, the limiting block is slidably connected inside the limiting groove, and the lower end of the locking rod is provided with an arc-shaped surface.

[0008] Furthermore, the inner wall of the frame is provided with an auxiliary groove, the outer side of the horizontal plate is provided with an auxiliary block, the auxiliary block is slidably connected to the inside of the auxiliary groove, and both ends of the horizontal plate are provided with grooves.

[0009] Furthermore, the inner wall of the slider is provided with a mounting groove, and a fixing plate is slidably connected inside the mounting groove. The outer side of the slider is provided with a threaded hole, one end of which extends into the interior of the mounting groove. A threaded rod is rotatably connected inside the threaded hole. A knob is installed at one end of the threaded rod, and the other end of the threaded rod is rotatably connected to the outer side of the fixing plate.

[0010] Furthermore, a limiting rod is provided on the outer side of the fixing plate, with one end of the limiting rod passing through the mounting groove and extending outward.

[0011] Furthermore, the drive structure includes a rack, one end of which is fixedly mounted on the upper surface of the cross plate, and the other end of which passes through the frame and extends upward. Two mounting seats are mounted on the upper surface of the frame, and a connecting shaft is rotatably connected between the two mounting seats. A gear is fixedly mounted on the outer side of the connecting shaft, and the gear meshes with the rack. One end of the connecting shaft passes through one of the mounting seats and is fitted with a worm gear. A frame is mounted on the outer side of the frame, and a worm is rotatably connected inside the frame. The upper end of the worm passes through the frame and is fitted with a handle. The worm gear meshes with the worm.

[0012] This utility model has the following beneficial effects: (1) This utility model sets up a connecting plate and a locking structure. The upper surface of the connecting plate is provided with a locking hole and an inclined sliding groove. The locking rod of the locking structure is kept in a downward extended state under the action of the spring. When the connecting plate is manually rotated, the extraction rod is rotated synchronously. When the locking rod slides along the inclined sliding groove to the position of the locking hole, the spring completely releases its elastic force and pushes the locking rod into the locking hole, locking the extraction rod in a 90° rotation state. This solves the problem of the extraction rod in the prior art failing to lock due to the lack of self-locking function during the lifting process. It also avoids the well cover from accidentally coming loose during the lifting process, and improves the efficiency and safety of the operation.

[0013] (2) This utility model drives the rack and pinion to lift by setting the meshing of the worm gear and the worm. By utilizing the self-locking characteristics of the worm gear and worm, the horizontal plate can be kept stable after the manhole cover is lifted to the set height. The manhole cover can be kept suspended without continuous force, which is convenient for operators to carry out subsequent operations. At the same time, when the lock is released, the connecting plate continues to rotate, the locking rod exits from the locking hole and slides along the inclined slide, and the spring is compressed. The operation is simple and quick.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the horizontal plate, slider, extraction rod, and locking structure of this utility model; Figure 3 This is an exploded view of the slider, extraction rod, and locking structure of this utility model; Figure 4 This is an exploded view of the locking structure of this utility model; Figure 5 This is a schematic diagram of the extraction rod structure of this utility model; Figure 6 This is an exploded view of the horizontal plate, slider, extraction rod, and locking structure of this utility model; Figure 7 This is a schematic diagram of the driving structure of this utility model; The attached diagram lists the components represented by each number as follows: In the diagram: 1. Frame; 101. Frame; 2. Drive structure; 201. Rack; 202. Mounting base; 203. Gear; 204. Worm gear; 205. Worm; 206. Handle; 3. Horizontal plate; 301. Auxiliary block; 4. Slider; 5. Extraction rod; 501. Connecting plate; 502. Locking hole; 503. Inclined slide groove; 6. Locking structure; 601. Sleeve; 602. Cover plate; 603. Moving block; 604. Spring; 605. Locking rod; 606. Limiting block; 7. Fixing plate; 8. Threaded rod; 9. Knob; 10. Limiting rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-7 As shown, this utility model is an auxiliary device for the construction of municipal pipe wells, including a frame 1, a drive structure 2 at the upper end of the frame 1, a horizontal plate 3 inside the frame 1, a slider 4 slidably connected to the outer side of the horizontal plate 3, an extraction rod 5 rotatably connected to the lower surface of the slider 4, a connecting plate 501 installed on the outer side of the extraction rod 5, a locking hole 502 and an inclined slide groove 503 opened on the upper surface of the connecting plate 501, one end of the inclined slide groove 503 communicating with the locking hole 502, and a locking structure 6 at the lower end of the slider 4, one end of the locking structure 6 being fitted and installed inside the locking hole 502; The frame 1 provides a supporting framework for the entire auxiliary device. The drive structure 2 is installed on the upper end of the frame 1 and is used to drive the horizontal plate 3 to move up and down in the vertical direction. The horizontal plate 3 is set inside the frame 1 and can move up and down in the vertical direction. The slider 4 is slidably connected to the outside of the horizontal plate 3 and can slide horizontally along the length of the horizontal plate 3 to adjust the horizontal position of the extraction rod 5. The extraction rod 5 is rotatably connected to the lower surface of the slider 4 and can rotate around its own axis. The lower end of the extraction rod 5 has an inverted T-shaped structure, which is used to extend into the extraction hole of the well cover and form a snap-fit ​​with the inner wall of the well cover after rotation. The connecting plate 501 is fixedly installed on the outside of the extraction rod 5 and rotates synchronously with the extraction rod 5. The locking hole 502 is opened on the upper surface of the connecting plate 501 and is used to cooperate with the locking structure 6 to lock the extraction rod 5 at a set angle. The inclined slide groove 503 is opened on the upper surface of the connecting plate 501 and one end is connected to the locking hole 502. It is used to guide the locking rod 605 of the locking structure 6 to slide along the inclined slide groove 503 and finally enter the locking hole 502 during the manual rotation of the connecting plate 501. The locking structure 6 is installed at the lower end of the slider 4 and is located above the connecting plate 501. Its lower end extends into the locking hole 502 and is used to lock the extraction rod 5 after it has rotated 90° to the position, so as to prevent the extraction rod 5 from rotating circumferentially during the lifting process. The locking structure 6 includes a sleeve 601 fixedly installed on the lower surface of the slider 4. A cover plate 602 is installed at the lower end of the sleeve 601. A moving block 603 is slidably connected inside the sleeve 601. A spring 604 is installed on the upper surface of the moving block 603. The other end of the spring 604 is fixedly installed on the inner top of the sleeve 601. A locking rod 605 is provided on the lower surface of the moving block 603. The end of the locking rod 605 away from the moving block 603 passes through the cover plate 602 and is fitted inside the locking hole 502. The sleeve 601 is fixedly installed on the lower surface of the slider 4 to provide installation space for the moving block 603 and the spring 604. The cover plate 602 is installed at the lower end of the sleeve 601 to close the lower end opening of the sleeve 601 and to guide the extension of the locking rod 605. The moving block 603 is slidably installed inside the sleeve 601 and moves up and down in the vertical direction. The spring 604 is located between the inner top of the sleeve 601 and the upper surface of the moving block 603. Its elastic force pushes the moving block 603 to move downward. The locking rod 605 is fixedly installed on the lower surface of the moving block 603 and passes downward through the cover plate 602. Under the action of the elastic force of the spring 604, it remains in a downward extended state. The inner wall of the sleeve 601 is provided with a limiting groove, the outer side of the moving block 603 is provided with a limiting block 606, the limiting block 606 is slidably connected to the inside of the limiting groove, and the lower end of the locking rod 605 is provided with an arc-shaped surface. The limiting groove is vertically opened along the inner wall of the sleeve 601. The limiting block 606 is fixedly set on the outside of the moving block 603 and embedded in the limiting groove. The limiting block 606 slides along the limiting groove to limit and guide the sliding stroke of the moving block 603, preventing the moving block 603 from tilting or rotating inside the sleeve 601. The arc-shaped surface at the lower end of the locking rod 605 is used to slide and cooperate with the bottom of the inclined slide groove 503 during the manual rotation of the connecting plate 501, reducing the resistance when the locking rod 605 slides along the inclined slide groove 503. The inner wall of the frame 1 is provided with an auxiliary groove, and the outer side of the horizontal plate 3 is provided with an auxiliary block 301. The auxiliary block 301 is slidably connected to the inside of the auxiliary groove, and both ends of the horizontal plate 3 are provided with grooves. The auxiliary groove is opened vertically along the inner wall of the frame 1. The auxiliary block 301 is fixedly set on the outside of the horizontal plate 3 and embedded in the auxiliary groove. The auxiliary block 301 slides along the auxiliary groove to guide the lifting stroke of the horizontal plate 3 and prevent the horizontal plate 3 from tilting during the lifting process. The grooves at both ends of the horizontal plate 3 are used to provide space for the sliding of the slider 4. The inner wall of the slider 4 is provided with an installation groove, and a fixing plate 7 is slidably connected inside the installation groove. The outer side of the slider 4 is provided with a threaded hole, one end of which extends into the interior of the installation groove. A threaded rod 8 is rotatably connected inside the threaded hole. A knob 9 is installed at one end of the threaded rod 8, and the other end of the threaded rod 8 is rotatably connected to the outer side of the fixing plate 7. The mounting groove is opened on the inner wall of the slider 4 and extends horizontally. The fixing plate 7 is slidably installed inside the mounting groove and can move along the length of the mounting groove. The threaded rod 8 is rotatably connected to the threaded hole on the outside of the slider 4. One end of the rod is equipped with a knob 9 and the other end is rotatably connected to the fixing plate 7. The knob 9 is held by the operator and applied to drive the threaded rod 8 to rotate. When the threaded rod 8 rotates, it moves horizontally relative to the slider 4 through the threaded engagement, pushing the fixing plate 7 to move closer to or away from the horizontal plate 3, so that the fixing plate 7 abuts or disengages from the outside of the horizontal plate 3, thereby locking the slider 4 in the set position on the horizontal plate 3 or unlocking it. A limiting rod 10 is also provided on the outer side of the fixing plate 7. One end of the limiting rod 10 passes through the mounting groove and extends outward. The limiting rod 10 is fixedly installed on the outside of the fixing plate 7 and extends outward through the side wall of the mounting groove. It is used to provide guidance during the movement of the fixing plate 7 and prevent the fixing plate 7 from deflecting during the movement. The drive structure 2 includes a rack 201. One end of the rack 201 is fixedly mounted on the upper surface of the cross plate 3. The other end of the rack 201 passes through the frame 1 and extends upward. Two mounting seats 202 are mounted on the upper surface of the frame 1. A connecting shaft is rotatably connected between the two mounting seats 202. A gear 203 is fixedly mounted on the outside of the connecting shaft. The gear 203 meshes with the rack 201. One end of the connecting shaft passes through one of the mounting seats 202 and is equipped with a worm gear 204. A frame 101 is mounted on the outside of the frame 1. A worm 205 is rotatably connected inside the frame 101. The upper end of the worm 205 passes through the frame 101 and is equipped with a handle 206. The worm gear 204 meshes with the worm 205. The rack 201 is vertically arranged, with its lower end fixedly connected to the upper surface of the horizontal plate 3 and its upper end extending upward through the upper wall of the frame 1. It converts the rotational motion of the gear 203 into the lifting motion of the horizontal plate 3. Two mounting seats 202 are fixedly installed on the upper surface of the frame 1 to provide rotational support for the connecting shaft. The connecting shaft is rotatably mounted between the two mounting seats 202 around its own axis. The gear 203 is fixedly installed on the outside of the connecting shaft and rotates synchronously with it. The teeth of the gear 203 mesh with the teeth of the rack 201. When the connecting shaft rotates, it drives the gear 203 to rotate synchronously. The gear 203 drives the rack 201 vertically through meshing. The worm gear 204 is fixedly installed at one end of the connecting shaft and rotates synchronously with the connecting shaft. The frame 101 is fixedly installed on the outside of the frame 1 to provide rotational support for the worm 205. The worm 205 is rotatably installed inside the frame 101 around its own axis. The handle 206 is fixedly installed at the upper protruding end of the worm 205 for the operator to hold and apply rotational driving force to drive the worm 205 to rotate. The worm 205 meshes with the worm gear 204 through its helical teeth. When the worm 205 rotates, it drives the worm gear 204 to rotate. The worm gear 204 drives the gear 203 to rotate through the connecting shaft, thereby realizing the transmission from the worm 205 to the rack 201.

[0019] When in use, first adjust the horizontal position of the extraction rod 5 according to the position of the extraction hole on the manhole cover. Turn the knob 9, and the knob 9 will drive the threaded rod 8 to rotate. The threaded rod 8 will move relative to the slider 4 through the threaded engagement, pushing the fixing plate 7 to disengage from the outer side of the horizontal plate 3, releasing the lock between the slider 4 and the horizontal plate 3. Then slide the slider 4 along the length of the horizontal plate 3 until the extraction rod 5 is aligned with the extraction hole of the manhole cover. Turn the knob 9 in the opposite direction, and the threaded rod 8 will drive the fixing plate 7 to move closer to the horizontal plate 3 and press against the outer side of the horizontal plate 3, locking the slider 4 on the horizontal plate 3. Then, place the frame 1 above the manhole cover, align the lower end of the extraction rod 5 with the extraction hole on the manhole cover, and move the extraction rod 5 downward so that its lower end extends into the extraction hole. After the inverted T-shaped structure at the lower end of the extraction rod 5 passes through the extraction hole, manually rotate the connecting plate 501. The connecting plate 501 drives the extraction rod 5 to rotate synchronously, and the lower end of the locking rod 605 slides along the inclined slide groove 503. During this process, the locking rod 605 is gradually pushed up by the bottom of the inclined slide groove 503, and the spring 604 is compressed. After the connecting plate 501 rotates 90°, the locking rod 605 slides along the inclined slide groove 503 to the position of the locking hole 502. The spring 604 completely releases its elastic force and pushes the locking rod 605 downward to enter the interior of the locking hole 502, fixing the connecting plate 501 and the slider 4 relative to each other, thus completing the locking of the extraction rod 5 with the inner wall of the manhole cover. Then turn the handle 206, which drives the worm gear 205 to rotate. The worm gear 205 drives the connecting shaft and gear 203 to rotate through the worm wheel 204. The gear 203 drives the horizontal plate 3 and the slider 4 to rise through the rack 201. The extraction rod 5 rises synchronously with the slider 4. The inverted T-shaped structure at the lower end of the extraction rod 5 drives the manhole cover to move upward and lift the manhole cover. When it is necessary to release the lock, continue to rotate the connecting plate 501 in the original direction. The locking rod 605 will exit from the locking hole 502 and slide along the inclined slide groove 503. During this process, the locking rod 605 will be gradually pushed up by the bottom of the inclined slide groove 503, and the spring 604 will be compressed. When the locking rod 605 has completely slid out of the inclined slide groove 503, the lock on the extraction rod 5 will be released. At this time, the connecting plate 501 can be rotated in the opposite direction to disengage the extraction rod 5 from the inner wall of the well cover. The meshing of the worm 205 and the worm wheel 204 has a self-locking characteristic, meaning that the worm 205 can drive the worm wheel 204 to rotate, while the worm wheel 204 cannot drive the worm 205 to rotate in the opposite direction. After the manhole cover is lifted to the set height, the position of the horizontal plate 3 can be kept stable, and the manhole cover can be kept suspended without continuous application of force. The locking structure 6 locks the extraction rod 5 by inserting the locking rod 605 into the locking hole 502. After manually rotating the connecting plate 501 by 90°, the extraction rod 5 is locked to prevent the extraction rod 5 from failing due to circumferential rotation during the lifting process. The inclined slide 503 guides the movement of the locking rod 605 during the rotation of the connecting plate 501. When the locking rod 605 is in the locking hole 502, the spring 604 is in a fully released state. When the locking rod 605 slides in the inclined slide 503, the spring 604 is in a compressed state.

[0020] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A municipal manhole construction auxiliary device, comprising a frame (1), wherein a drive structure (2) is provided at the upper end of the frame (1), and a cross plate (3) is provided inside the frame (1), characterized in that: A slider (4) is slidably connected to the outer side of the horizontal plate (3). An extraction rod (5) is rotatably connected to the lower surface of the slider (4). A connecting plate (501) is installed on the outer side of the extraction rod (5). A locking hole (502) and an inclined groove (503) are provided on the upper surface of the connecting plate (501). One end of the inclined groove (503) is connected to the locking hole (502). The lower end of the slider (4) is provided with a locking structure (6), and one end of the locking structure (6) is fitted inside the locking hole (502).

2. The municipal manhole construction auxiliary device according to claim 1, characterized in that: The locking structure (6) includes a sleeve (601) fixedly installed on the lower surface of the slider (4), a cover plate (602) is installed at the lower end of the sleeve (601), and a moving block (603) is slidably connected inside the sleeve (601). A spring (604) is installed on the upper surface of the movable block (603), and the other end of the spring (604) is fixedly installed on the inner top of the sleeve (601). A locking rod (605) is provided on the lower surface of the movable block (603). The end of the locking rod (605) away from the movable block (603) passes through the cover plate (602) and is fitted inside the locking hole (502).

3. The municipal manhole construction auxiliary device according to claim 2, characterized in that: The inner wall of the sleeve (601) is provided with a limiting groove, and the outer side of the moving block (603) is provided with a limiting block (606). The limiting block (606) is slidably connected inside the limiting groove, and the lower end of the locking rod (605) is provided with an arc-shaped surface.

4. The municipal manhole construction auxiliary device according to claim 3, characterized in that: The inner wall of the frame (1) is provided with an auxiliary groove, and the outer side of the horizontal plate (3) is provided with an auxiliary block (301). The auxiliary block (301) is slidably connected to the inside of the auxiliary groove, and both ends of the horizontal plate (3) are provided with grooves.

5. The municipal manhole construction auxiliary device according to claim 4, characterized in that: The inner wall of the slider (4) is provided with an installation groove, and a fixing plate (7) is slidably connected inside the installation groove. The outer side of the slider (4) is provided with a threaded hole, one end of which extends into the interior of the installation groove. A threaded rod (8) is rotatably connected inside the threaded hole. A knob (9) is installed at one end of the threaded rod (8), and the other end of the threaded rod (8) is rotatably connected to the outer side of the fixing plate (7).

6. The municipal manhole construction auxiliary device according to claim 5, characterized in that: The outer side of the fixing plate (7) is also provided with a limiting rod (10), one end of which passes through the mounting groove and extends outward.

7. The municipal manhole construction auxiliary device according to claim 6, characterized in that: The drive structure (2) includes a rack (201), one end of which is fixedly mounted on the upper surface of the horizontal plate (3), and the other end of which passes through the frame (1) and extends upward. Two mounting seats (202) are installed on the upper surface of the frame (1). A connecting shaft is rotatably connected between the two mounting seats (202). A gear (203) is fixedly installed on the outside of the connecting shaft. The gear (203) meshes with the rack (201). One end of the connecting shaft passes through one of the mounting seats (202) and is equipped with a worm gear (204). A frame (101) is installed on the outside of the frame (1), and a worm (205) is rotatably connected inside the frame (101). The upper end of the worm (205) passes through the frame (101) and is equipped with a handle (206). The worm wheel (204) is meshed with the worm (205).

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