Auxiliary dismounting device for manhole cover plate

Abstract

The utility model relates to an auxiliary dismounting device for a manhole cover plate, and relates to the technical field of maintenance. The utility model discloses an auxiliary dismounting device which comprises a base fixedly arranged on one side of a manhole; one end of the connecting rod is rotationally connected with the base, and the other end of the connecting rod is connected with a displacement assembly; the hoop assembly is connected with the displacement assembly, and the hoop assembly is used for clamping the manhole cover plate, so that the axis of the manhole cover plate coincides with the first axis of the hoop assembly; when the connecting rod rotates to the first position, the displacement assembly can drive the hoop assembly to move along the first straight line, so that the first axis coincides with the axis direction of the manhole. Compared with the prior art, the manhole cover plate can be supported through the auxiliary dismounting and mounting device, the manhole cover plate can be assisted to be positioned by rotating the connecting rod and adjusting the displacement assembly, compared with manual positioning of the manhole cover plate, the positioning difficulty of the manhole cover plate is lowered, the manhole cover plate does not need to be manually lifted during positioning, and the labor intensity of dismounting and mounting personnel is lowered.

Description

Technical Field

[0001] This utility model relates to the field of distillation system maintenance technology, and in particular to an auxiliary disassembly and assembly device for manhole covers. Background Technology

[0002] In distillation systems, manhole covers are installed at manholes. Because these covers are exposed to the external environment, they require regular inspection and replacement when damaged. However, the working area at manholes is generally small, often requiring a single person to replace the cover. Furthermore, manhole covers are heavy, and installation requires not only stable lifting but also aligning the cover's mounting holes with the corresponding openings in the manhole. This makes the operation very difficult and poses significant safety risks. Utility Model Content

[0003] This utility model provides an auxiliary disassembly and assembly device for manhole covers, which reduces the difficulty of disassembling and assembling manhole covers.

[0004] This utility model provides an auxiliary disassembly and assembly device for a manhole cover, comprising: a base, which is fixedly disposed on one side of the manhole; a connecting rod, one end of which is rotatably connected to the base and the other end of which is connected to a displacement component; and a clamping assembly, which is connected to the displacement component. The clamping assembly is used to clamp the manhole cover so that the axis of the manhole cover coincides with the first axis of the clamping assembly. When the connecting rod is rotated to a first position, the displacement component can drive the clamping assembly to move along a first straight line, so that the first axis coincides with the axis of the manhole.

[0005] In one embodiment, the first axis is perpendicular to the first straight line, the connecting rod is rotatable relative to the base about a second axis, the second axis is parallel to the first straight line, and the distance between the second axis and the axis of the manhole is equal to the distance between the second axis and the first axis.

[0006] In one embodiment, the connecting rod includes a first rod portion and a second rod portion, the first rod portion extending vertically and the second rod portion extending horizontally, the bottom end of the first rod portion being inserted into the base and rotatably connected to the base, the top end of the first rod portion being connected to the second rod portion, the displacement assembly being installed on the side of the second rod portion away from the first rod portion, and the clamping assembly being located below the second rod portion, wherein the second axis is the center line of the first rod portion.

[0007] In one embodiment, a bearing is installed in the base, and the first rod is inserted into the bearing and rotates with the base.

[0008] In one embodiment, the clamp assembly includes a first clamp body, a second clamp body, and a fastener. One end of the first clamp body is rotatably connected to the second clamp body, and the other end of the first clamp body is detachably connected to the second clamp body via the fastener to fit tightly against the circumferential outer wall of the manhole cover.

[0009] In one embodiment, a first stop is provided on the first hoop, one end of which is connected to the first hoop and the other end extends toward the second hoop to block the outer end face of the manhole cover.

[0010] In one embodiment, the first hoop is provided with a plurality of first stops, which are arranged at intervals along the circumference of the first hoop.

[0011] In one embodiment, the first hoop is further provided with a second stop, one end of which is connected to the first hoop and the other end extends toward the second hoop to block the inner end face of the manhole cover. The first stop and the second stop are arranged at intervals along the first axis, and the distance between the first stop and the second stop is greater than or equal to the thickness of the manhole cover.

[0012] In one embodiment, the second hoop is provided with a third stop opposite to the first stop. One end of the third stop is connected to the second hoop, and the other end extends toward the first hoop. The blocking surface of the third stop and the blocking surface of the first stop are located in the same plane.

[0013] In one embodiment, the displacement assembly includes an adjusting rod, an adjusting nut, and a rotation limiting member. The bottom of the adjusting rod is fixedly connected to the clamping assembly, the rotation limiting member is fixed to the connecting rod, and the rotation limiting member is configured to restrict the adjustment rod from rotating relative to the connecting rod.

[0014] The connecting rod is provided with a mounting hole with the axis of a first straight line. The upper part of the adjusting rod passes through the mounting hole and is threadedly connected to the adjusting nut. The bottom surface of the adjusting nut abuts against the top surface of the connecting rod. When the adjusting nut is screwed, the adjusting rod can move linearly along the axis of the mounting hole.

[0015] Compared with existing technologies, the advantages of this invention are as follows: During use, the manhole cover can be clamped using a clamping assembly. Since the base is fixed to one side of the manhole, and the connecting rod is installed on the fixed base, the clamping assembly holding the manhole cover in place can be supported by the connecting rod. Maintenance personnel can lift the manhole cover by clamping it with the clamping assembly when disassembling or assembling it. In use, the position of the clamping assembly and the manhole cover can be adjusted by rotating the connecting rod. When the connecting rod is rotated to the first position, the clamping assembly can be moved along a first straight line by adjusting the displacement assembly, aligning the axis of the clamped manhole cover with the axis of the manhole, thus achieving the positioning of the manhole cover. Compared with manually positioning the manhole cover, this not only reduces the difficulty of positioning the manhole cover but also eliminates the need to manually lift the manhole cover during the positioning process, reducing the labor intensity of the disassembly and assembly personnel. Attached Figure Description

[0016] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0017] Figure 1 This is a three-dimensional structural diagram of the auxiliary disassembly and assembly device when the connecting rod is rotated to the first position in an embodiment of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the auxiliary disassembly and assembly device when the connecting rod is rotated to the second position in an embodiment of this utility model;

[0019] Figure 3 This is a front view structural schematic diagram of the auxiliary disassembly and assembly device in an embodiment of this utility model.

[0020] Figure label:

[0021] 100. Base; 110. Top cover; 120. Lower seat; 130. Bearing;

[0022] 200. Connecting rod; 210. First rod section; 220. Second rod section;

[0023] 300. Displacement assembly; 310. Adjusting rod; 320. Adjusting nut; 330. Rotation limiter;

[0024] 400. Clamp assembly; 410. First clamp body; 411. First stop; 412. Second stop; 420. Second clamp body; 421. Third stop; 430. Fastener;

[0025] 500. Manhole;

[0026] 600. External wall of the distillation chamber. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] See Figures 1 to 3 As shown, this application provides an auxiliary device for disassembling and assembling a manhole cover, which includes:

[0029] The base 100 is fixedly installed on one side of the manhole 500. The connecting rod 200 is rotatably connected to the base 100 at one end and connected to the displacement component 300 and the clamp component 400 at the other end. The clamp component 400 is used to clamp the manhole cover so that the axis of the manhole cover coincides with the first axis of the clamp component 400.

[0030] Among them, when the connecting rod 200 rotates to the first position ( Figure 1 When in the state, the displacement component 300 can drive the clamp component 400 to move along the first straight line, so that the first axis coincides with the axis direction of the manhole 500.

[0031] like Figures 1 to 3 As shown, in some implementations, the base 100 is fixedly disposed on the left side of the manhole 500, and the connecting rod 200 can rotate around the base 100 to adjust the position of the displacement assembly 300, the clamping assembly 400, and the manhole cover plate clamped in the clamping assembly 400. The connecting rod 200 can rotate between a first position and a second position to adjust the position of the clamping assembly 400. When the connecting rod 200 is rotated to the second position away from the manhole (e.g., ...), ... Figure 2 As shown, the clamp assembly is farther away from the manhole, providing more space for operators to operate, thus facilitating the installation of the manhole cover in the clamp assembly 400 or the removal of the manhole cover from the clamp assembly 400.

[0032] When disassembling the manhole cover originally installed at manhole 500, first rotate the connecting rod 200 to the first position, and then control the displacement component 300 to drive the clamping assembly 400 to move along the first straight line, so that the first axis of the clamping assembly 400 coincides with the axis of the manhole 500. Since the manhole cover is installed at manhole 500 and its axis coincides with the axis of the manhole 500, the axis of the manhole cover installed at manhole 500 coincides with the first axis of the clamping assembly 400. Then, clamp the clamping assembly 400 onto the outside of the manhole cover. At this point, the manhole cover is clamped by the clamping assembly 400, eliminating the need for manual lifting of the manhole cover by the operator. The operator only needs to disassemble the connecting parts of the fastening bolts on the manhole cover to complete the disassembly. Compared to the operator holding the manhole cover with one hand and disassembling the connecting parts with the other, this significantly reduces the difficulty of disassembling the manhole cover.

[0033] When installing a new manhole cover at manhole 500, the connecting rod 200 can be rotated first to move the clamping assembly 400, connected to the connecting rod 200, away from manhole 500, allowing the manhole cover to be clamped onto the clamping assembly 400 in a larger operating area. After the clamping assembly 400 clamps the manhole cover, the connecting rod 200 is rotated to the first position, and the displacement assembly 300 drives the clamping assembly 400 to move along the first straight line, so that the manhole cover whose axis is along the first axis coincides with the axis of manhole 500, completing the positioning of the manhole cover. The positioned manhole cover is then connected to the mounting hole of manhole 500 via connecting parts. Because of the clamping assembly 400, the operator does not need to lift the manhole cover when installing connecting parts; both hands can be used to install connecting parts (such as connecting bolts), reducing the difficulty of manhole cover installation.

[0034] It should be noted that in this application, the base 100 is always fixed to one side of the manhole 500 and is not movable relative to the manhole 500. Specifically, the base 100 can be fixed to one side of the manhole 500 by welding it to the outer wall 600 of the distillation chamber where the manhole 500 is located.

[0035] In some implementations, the first axis is perpendicular to the first straight line, the connecting rod 200 is able to rotate relative to the base 100 about the second axis, the second axis is parallel to the first straight line, and the distance between the second axis and the axis of the manhole 500 is equal to the distance between the second axis and the first axis.

[0036] Since the second axis is parallel to the first straight line, the distance between the clamp assembly 400 and the second axis remains constant as the clamp assembly 400 moves along the first straight line. When setting the base 100, due to structural limitations, the distance between the second axis and the first axis is fixed. The position of the base 100 can be determined by first measuring the distance between the second axis and the first axis, thus preventing the second axis of the base 100 from being too far or too close to the axis of the manhole 500, which would prevent the first axis from coinciding with the axis of the manhole 500.

[0037] See Figure 3 As shown, in some implementations, the connecting rod 200 includes a first rod portion 210 and a second rod portion 220. The first rod portion 210 extends vertically, and the second rod portion 220 extends horizontally. The bottom end of the first rod portion 210 is inserted into the base 100 and rotatably connected to the base 100. The top end of the first rod portion 210 is connected to the second rod portion 220. The displacement assembly 300 is installed on the side of the second rod portion 220 away from the first rod portion 210, and the clamp assembly 400 is located below the second rod portion 220. The second axis is the center line of the first rod portion 210.

[0038] Since the first rod 210 extends vertically and the second axis is the center line of the first rod 210, that is, the rotation axis of the connecting rod 200 and the base 100 is parallel to the direction of gravity, the first rod 210 is prevented from rotating under the gravity of the manhole cover, thus reducing the shaking of the manhole cover during operation.

[0039] See Figure 3 As shown, in some implementations, a bearing 130 is installed in the base 100, and the first rod 210 is inserted into the bearing 130 and rotates with the base 100. The bearing 130 enables the rotating connection between the connecting rod 200 and the base 100, making the rotation process smoother and facilitating the operation of disassembly and assembly personnel.

[0040] To prevent foreign objects from falling into the bearing 130 and jamming it, the base 100 also includes an upper cover 110 disposed above the bearing 130. The base also includes a lower seat 120 fixed to the outer wall 600 of the distillation chamber. By fastening the upper cover 110 to the upper seat 120, foreign objects above the base 100 can be blocked, reducing the amount of foreign objects falling into the interior of the base 100.

[0041] See Figures 1 to 3 As shown, in some implementations, the clamp assembly 400 includes a first clamp body 410, a second clamp body 420, and a fastener 430. One end of the first clamp body 410 is rotatably connected to the second clamp body 420, and the other end of the first clamp body 410 is detachably connected to the second clamp body 420 through the fastener 430 to fit tightly against the circumferential outer wall of the manhole cover.

[0042] When using the clamp assembly 400 to clamp the manhole cover, the fastener 430 at the end of the first clamp 410 can be removed first, allowing the first clamp 410 and the second clamp 420 to rotate relative to each other, forming an opening that allows the manhole cover to pass through vertically. After the manhole cover passes through the opening, the first clamp 410 and the second clamp 420 are locked with the fastener 430, so that the first clamp 410 and the second clamp 420 respectively fit against the circumferential outer wall of the manhole cover, thereby clamping the manhole cover.

[0043] Because it clamps the outer circumferential wall of the manhole cover, the end face of the manhole cover is exposed by the clamp assembly 400, making it convenient for operators to install and remove the bolts on the manhole cover. This also allows the manhole cover to be easily installed at the manhole 500 or removed from the manhole 500 after it is clamped by the clamp assembly 400.

[0044] See Figures 1 to 3As shown, in some implementations, a first stop 411 is provided on the first hoop 410. One end of the first stop 411 is connected to the first hoop 410, and the other end extends toward the second hoop 420 to block the outer end face of the manhole cover (the end face facing the outside of the manhole 500). That is, after the manhole cover is clamped onto the clamp assembly 400, the axial movement of the manhole cover on the clamp assembly 400 can be restricted by the first stop 411 connected to the first hoop 410, thereby improving the stability of the manhole cover on the clamp assembly 400. In the figure, the first stop 411 is fixedly connected to the first hoop 410. In some implementations, the end of the first stop 411 connected to the first hoop 410 can also be configured to rotate with the first hoop 410, and the axis of rotation between the first stop 411 and the first hoop 410 can be set to be parallel to the first axis, so that the orientation of the first stop 411 can be adjusted by rotating the first stop 411 relative to the first hoop 410. When it is necessary to move the manhole cover into or out of the clamp assembly 400, the first stop 411 can be rotated to extend towards the side away from the second clamp body 420, preventing the manhole cover from axially moving out of the clamp assembly 400. Conversely, when it is necessary to restrict the manhole cover from moving out of the clamp assembly 400, the first stop 411 is rotated to extend towards the second clamp body 420 (e.g., ...). Figure 3 As shown, the first stop 411 is used to block the manhole cover plate to prevent the manhole cover plate from moving axially.

[0045] See Figures 1 to 3 As shown, in some implementations, the first hoop 410 is provided with multiple first stops 411, which are arranged at intervals along the circumference of the first hoop 410. By providing multiple first stops 411 to block the manhole cover, the movement of the manhole cover in the clamping assembly 400 can be better restricted, making the manhole cover more stably clamped in the clamping assembly 400. In the figure, two first stops 411 are provided on the first hoop 410. In other implementations, other numbers of first stops 411 can be provided on the first hoop 410.

[0046] See Figures 1 to 3 As shown, in some implementations, a second stop 412 is also provided on the first hoop 410. One end of the second stop 412 is connected to the first hoop 410, and the other end of the second stop 412 extends toward the second hoop 420 to block the inner end face (the end face facing the inside of the manhole 500) of the manhole cover. The first stop 411 and the second stop 412 are arranged at intervals along the first axis, and the distance between the first stop 411 and the second stop 412 is greater than or equal to the thickness of the manhole cover.

[0047] Since the first stop 411 and the second stop 412 are arranged at intervals along the first axis, and the distance between the first stop 411 and the second stop 412 is greater than or equal to the thickness of the manhole cover, the manhole cover can be placed between the first stop and the second stop, restricting the movement of the manhole cover from both sides of the front and rear faces of the manhole cover, thereby improving the stability of the manhole cover.

[0048] See Figures 1 to 3 As shown, in some implementations, the second hoop 420 is provided with a third stop 421 that is disposed opposite to the first stop 411. One end of the third stop 421 is connected to the second hoop 420, and the other end extends toward the first hoop 410. The blocking surface of the third stop 421 (the side for contacting the outer end face of the manhole cover) and the blocking surface of the first stop 411 (the side for contacting the outer end face of the manhole cover) are located in the same plane.

[0049] In other words, the manhole cover is blocked not only by the first stop 411 on the first clamp 410, but also by the third stop 421 on the second clamp 420, preventing the manhole cover from detaching from the clamp assembly 400. In some implementations, multiple third stops 421 are arranged circumferentially on the second clamp 420 to enhance the blocking effect on the outer end face of the manhole cover. Since the blocking surface of the third stop 421 is in the same plane as the blocking surface of the first stop 411, both the first stop 411 and the third stop 421 can simultaneously contact the outer end face of the manhole cover, thus blocking the manhole cover. Compared to the first stop 411 and the third stop 421 blocking the manhole cover separately, the manhole cover can be blocked from both sides, improving its stability.

[0050] In some implementations, a fourth stop is also provided on the second hoop 420, which is opposite to the second stop 412. One end of the fourth stop is connected to the second hoop 420, and the other end of the fourth stop extends toward the first hoop 410. The blocking surface of the fourth stop (used to block the side of the inner end face of the manhole cover) and the blocking surface of the second stop 412 (used to block the side of the inner end face of the manhole cover) are in the same plane to further improve the stability of the manhole cover.

[0051] See Figures 1 to 3As shown, in some implementations, the displacement assembly 300 includes an adjusting rod 310, an adjusting nut 320, and a rotation limiting member 330. The bottom of the adjusting rod 310 is fixedly connected to the clamping assembly, and the rotation limiting member 330 is fixedly connected to the connecting rod 200. The rotation limiting member 330 is configured to restrict the adjustment rod 310 from rotating relative to the connecting rod 200. The connecting rod 200 is provided with a mounting hole with its axis as a first straight line. The upper part of the adjusting rod 310 passes through the mounting hole and is threadedly connected to the adjusting nut 320. The bottom surface of the adjusting nut 320 abuts against the top surface of the connecting rod 200. When the adjusting nut 320 is screwed, the adjusting rod 310 can move linearly along the axis of the mounting hole.

[0052] The bottom of the adjusting rod 310 is connected to the clamping assembly. Under the weight of the manhole cover, the adjusting rod 310 exerts a downward force on the adjusting nut 320. Since the bottom surface of the adjusting nut 320 abuts against the top surface of the connecting rod 200, the connecting rod 200 can support the adjusting nut 320, preventing it from moving downward. When tightening the adjusting nut 320, the limiting shaft prevents the adjusting rod 310 from rotating synchronously with the adjusting nut 320. Instead, the adjusting rod 310 moves along the first straight line, driving the clamping assembly 400 to move along the first straight line, thus adjusting the position of the manhole cover.

[0053] To prevent the adjusting rod 310 from rotating when the adjusting nut 320 is tightened, a protrusion extending along a first straight line is provided on the adjusting rod 310. The rotation limiting member 330 fixed to the connecting rod 200 cooperates with the protrusion to prevent the adjusting rod 310 from rotating. Specifically, a groove extending along the first straight line is formed on the rotation limiting member 330, and the protrusion is inserted into the groove of the rotation limiting member 330.

[0054] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An auxiliary device for disassembling and assembling manhole covers, characterized in that, It includes: The base is fixedly installed on one side of the manhole; A connecting rod, one end of which is rotatably connected to the base, and the other end of which is connected to a displacement component; as well as A clamping assembly, which is connected to the displacement assembly, is used to clamp the manhole cover so that the axis of the manhole cover coincides with the first axis of the clamping assembly; When the connecting rod rotates to the first position, the displacement component can drive the clamp component to move along a first straight line, so that the first axis coincides with the axis of the manhole.

2. The auxiliary disassembly and assembly device according to claim 1, characterized in that, The first axis is perpendicular to the first straight line, the connecting rod is rotatable relative to the base about the second axis, the second axis is parallel to the first straight line, and the distance between the second axis and the axis of the manhole is equal to the distance between the second axis and the first axis.

3. The auxiliary disassembly and assembly device according to claim 2, characterized in that, The connecting rod includes a first rod portion and a second rod portion. The first rod portion extends vertically, and the second rod portion extends horizontally. The bottom end of the first rod portion is inserted into the base and rotatably connected to the base. The top end of the first rod portion is connected to the second rod portion. The displacement component is installed on the side of the second rod portion away from the first rod portion, and the clamping component is located below the second rod portion. The second axis is the center line of the first rod portion.

4. The auxiliary disassembly and assembly device according to claim 3, characterized in that, The base is equipped with a bearing, and the first rod is inserted into the bearing and rotates with the base.

5. The auxiliary disassembly and assembly device according to any one of claims 1-4, characterized in that, The clamp assembly includes a first clamp body, a second clamp body, and a fastener. One end of the first clamp body is rotatably connected to the second clamp body, and the other end of the first clamp body is detachably connected to the second clamp body through the fastener to fit tightly against the circumferential outer wall of the manhole cover.

6. The auxiliary disassembly and assembly device according to claim 5, characterized in that, The first hoop is provided with a first stop, one end of which is connected to the first hoop and the other end extends toward the second hoop to block the outer end face of the manhole cover.

7. The auxiliary disassembly and assembly device according to claim 6, characterized in that, The first hoop is provided with a plurality of first stops, which are arranged at intervals along the circumference of the first hoop.

8. The auxiliary disassembly and assembly device according to claim 6, characterized in that, The first hoop is also provided with a second stop, one end of which is connected to the first hoop and the other end extends toward the second hoop to block the inner end face of the manhole cover. The first stop and the second stop are arranged at intervals along the first axis, and the distance between the first stop and the second stop is greater than or equal to the thickness of the manhole cover.

9. The auxiliary disassembly and assembly device according to claim 6, characterized in that, The second hoop is provided with a third stop opposite to the first stop. One end of the third stop is connected to the second hoop, and the other end extends toward the first hoop. The blocking surface of the third stop and the blocking surface of the first stop are located in the same plane.

10. The auxiliary disassembly and assembly device according to any one of claims 1-4, characterized in that, The displacement assembly includes an adjusting rod, an adjusting nut, and a rotation limiting member. The bottom of the adjusting rod is fixedly connected to the clamping assembly, and the rotation limiting member is fixed to the connecting rod. The rotation limiting member is configured to restrict the adjustment rod from rotating relative to the connecting rod. The connecting rod is provided with a mounting hole with the axis of a first straight line. The upper part of the adjusting rod passes through the mounting hole and is threadedly connected to the adjusting nut. The bottom surface of the adjusting nut abuts against the top surface of the connecting rod. When the adjusting nut is screwed, the adjusting rod can move linearly along the axis of the mounting hole.

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