Liftable well lid

Abstract

The utility model discloses a liftable well lid which comprises a pipeline body. The pipeline comprises a pipeline body, a pair of guide rails arranged in parallel, a pair of sliding blocks, a supporting frame, a transmission sliding block, a lifting device, a well lid and a transmission sliding block transmission mechanism. The guide rails are fixedly installed on the inner wall of the pipeline body in the axial direction of the pipeline body. The sliding blocks are arranged on the corresponding guide rails in a sliding manner; sliding block grooves are symmetrically formed in the two sides of the supporting frame in the length direction, the supporting frame is detachably embedded between the pair of sliding blocks through the sliding block grooves, and a sliding connecting groove extending in the length direction is formed in one sliding block groove of the supporting frame; the side face of the supporting frame is provided with an arc-shaped rotating guide groove communicating with the sliding connecting groove. The transmission sliding block is arranged in the sliding connection groove in a sliding mode. According to the utility model, the well lid can be lifted to release pressure when the pipeline is forcibly flushed, and meanwhile, the support frame can be conveniently mounted and dismounted.

Description

Technical Field

[0001] This utility model relates to a liftable manhole cover, belonging to the field of sewage treatment technology. Background Technology

[0002] Currently, wastewater treatment plants are a crucial component of urban infrastructure, involving multiple stages such as wastewater collection, transportation, and treatment. During wastewater treatment, air or other gases are mixed with water to form a high-speed flowing medium, used to enhance wastewater flow or remove sediment from pipes. However, when the air-water mixture generates significant impact force, it can cause a sudden increase in pressure within the wastewater network, affecting the stability of pipe connections, manholes, and other structures. Especially during wastewater pipe cleaning or high-intensity transportation, the instantaneous impact force of the mixed fluid can cause manhole covers to shift or detach, further increasing safety hazards.

[0003] After searching the existing technology, it was found that Chinese patent CN219219305U discloses a liftable manhole cover. This patent uses an electric lifting rod to lift the manhole cover. However, it was found that the electric lifting rod is fixedly welded to the lower end of the manhole cover body, which makes it inconvenient to operate when it is necessary to enter the pipeline for maintenance. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a liftable manhole cover that can lift the manhole cover to release pressure when the pipeline is subjected to strong flushing, and at the same time, the support frame can be easily installed and disassembled.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a liftable manhole cover, comprising:

[0006] Pipe body;

[0007] A pair of parallel guide rails are fixedly installed on the inner wall of the pipe body along the axial direction of the pipe body;

[0008] A pair of sliders, the sliders being slidably mounted on corresponding guide rails;

[0009] A support frame, wherein slider grooves are symmetrically arranged on both sides along the length direction, and the support frame is detachably embedded between a pair of sliders through the slider grooves. One of the slider grooves of the support frame is provided with a sliding connection groove extending along the length direction, and the side of the support frame is provided with an arc-shaped rotating guide groove communicating with the sliding connection groove.

[0010] A transmission slider is slidably disposed in the sliding connecting groove, and one end of the transmission slider is fixedly connected to the slider.

[0011] A lifting device, which is fixedly installed on the support frame, and has a telescopic movable end;

[0012] A manhole cover, which is detachably mounted on the telescopic movable end of the lifting device;

[0013] A transmission slider mechanism is movably mounted in the arc-shaped rotating guide groove of the support frame. The transmission slider mechanism is hinged to the other end of the transmission slider. The transmission slider mechanism is adapted to rotate and drive the transmission slider to move in the sliding connection groove, thereby driving the corresponding slider to disengage from the corresponding guide rail.

[0014] Furthermore, a specific structure of a transmission slider mechanism is provided, the transmission slider mechanism comprising:

[0015] A rotating block is rotatably mounted in the arc-shaped rotating guide groove, and a connecting keyway extending radially is provided on the axial first end face of the rotating block;

[0016] A connecting key is slidably disposed in the connecting keyway of the rotating block. The first end of the connecting key is hinged to the end of the transmission slider that is away from the slider. The length of the connecting key is less than the length of the connecting keyway.

[0017] An operating handle, the first end of which is hinged to the axial second end face of the rotating block;

[0018] A limiting protrusion is fixedly installed on the support frame and is adapted to restrict the rotation of the operating handle.

[0019] Furthermore, a specific structure for a quick-connection mechanism is provided, wherein a quick-connection mechanism is provided between the manhole cover and the telescopic movable end of the lifting device, the quick-connection mechanism comprising:

[0020] A guide buckle is rotatably connected to the manhole cover. The upper end of the guide buckle passes through the manhole cover, and the lower end of the guide buckle is fixedly connected to an annular abutment plate. An axially extending guide block is provided on the annular abutment plate, and a locking block extends radially outward from the center of the outer circumference of the guide block.

[0021] A guide nut is fixedly installed on the telescopic movable end of the lifting device. The guide nut includes an upwardly extending abutment disc. The abutment disc is provided with a radial guide groove that matches the guide block. The abutment disc is provided with an arc-shaped groove that extends circumferentially and communicates with the radial guide groove. The outer wall of the abutment disc is provided with a locking arc groove that communicates with the arc groove and cooperates with the locking block.

[0022] Furthermore, in order to facilitate the rotation of the guide buckle, the liftable manhole cover also includes a rotary connecting handle, which is fixedly connected to the upper end of the guide buckle extending on the manhole cover, and the rotary connecting handle is adapted to drive the guide buckle to rotate.

[0023] Furthermore, in order to restrict the rotation of the rotary connecting handle, the upper surface of the manhole cover is provided with at least one rotation limiting protrusion, which is adapted to restrict the rotation of the rotary connecting handle.

[0024] Furthermore, the manhole cover is also equipped with anti-slip texture.

[0025] Furthermore, a specific type of lifting device is provided, wherein the lifting device is a cylinder.

[0026] By adopting the above technical solution, this utility model has the following beneficial effects:

[0027] In this invention, when forced flushing of the pipeline is required, the lifting device is first controlled to rise, causing the manhole cover to move upward and release the pressure inside the pipeline, while preventing the manhole cover from being blown off the pipeline body. When it is necessary to enter the pipeline body for maintenance, the support frame is first pulled to move it smoothly upward along the guide rail via the slider. Then, the transmission slider mechanism is rotated, which drives the transmission slider to move inward, thereby disengaging the slider from the guide rail, allowing the entire support frame structure to be removed.

[0028] In addition, the quick-connect mechanism, which uses a guide male and guide female coupling, allows for the installation and removal of the manhole cover and the lifting device through the engagement of the guide block and the radial guide groove, as well as the meshing of the locking block and the locking arc groove, and the operation of rotating the connecting handle. At the same time, the anti-slip texture and rotation limit protrusion on the manhole cover enhance the safety and stability during use.

[0029] In summary, this utility model is easy to install and disassemble, safe to operate, and easy to maintain. It ensures the ability to handle pipeline purging while also ensuring the convenience of daily use and maintenance. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the retractable manhole cover of this utility model. Figure 1 ;

[0031] Figure 2 This is a three-dimensional structural diagram of the retractable manhole cover of this utility model. Figure 2 ;

[0032] Figure 3 This is a three-dimensional structural diagram of the retractable manhole cover of this utility model. Figure 3;

[0033] Figure 4 for Figure 2 A magnified view of part A in the middle;

[0034] Figure 5 This is a three-dimensional structural diagram of the retractable manhole cover of this utility model. Figure 4 ;

[0035] Figure 6 for Figure 5 A magnified view of part B in the middle section;

[0036] Figure 7 This is a three-dimensional structural diagram of the guide buckle of the liftable manhole cover of this utility model;

[0037] Figure 8 This is a three-dimensional structural diagram of the guide buckle of the liftable manhole cover of this utility model;

[0038] Figure 9 This is a three-dimensional structural diagram of the retractable manhole cover of this utility model. Figure 5 . Detailed Implementation

[0039] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0040] like Figure 1-9 As shown, a retractable manhole cover is characterized by comprising:

[0041] Pipe body 1;

[0042] A pair of parallel guide rails 2 are fixedly installed on the inner wall of the pipe body 1 along the axial direction of the pipe body 1.

[0043] A pair of sliders 3, which are slidably mounted on corresponding guide rails 2;

[0044] The support frame 4 has symmetrical slider grooves 41 on both sides along its length. The support frame 4 is detachably embedded between a pair of sliders 3 through the slider grooves 41. One of the slider grooves 41 of the support frame 4 is provided with a sliding connection groove extending along the length. The side of the support frame 4 is provided with an arc-shaped rotating guide groove 43 that communicates with the sliding connection groove.

[0045] The transmission slider 5 is slidably disposed in the sliding connection groove, and one end of the transmission slider 5 is fixedly connected to the slider 3.

[0046] Lifting device 6 is fixedly installed on support frame 4 and has a telescopic movable end.

[0047] The manhole cover 7 is detachably installed on the telescopic movable end of the lifting device 6;

[0048] The transmission slider mechanism is movably installed in the arc-shaped rotating guide groove 43 of the support frame 4. The transmission slider mechanism is hinged to the other end of the transmission slider 5. The transmission slider mechanism is adapted to rotate and drive the transmission slider 5 to move in the sliding connection groove, thereby driving the corresponding slider 3 to disengage from the corresponding guide rail 2.

[0049] In this embodiment, as Figure 1-4 As shown, when a forced flushing of the pipeline is required, the lifting device 6 is first controlled to rise, causing the manhole cover 7 to move upward, thereby releasing the pressure inside the pipeline and preventing the manhole cover 7 from being blown off course and detached from the pipeline body 1. When it is necessary to enter the pipeline body 1 for maintenance, the support frame 4 is first pulled to move smoothly upward along the guide rail 2 via the slider 3. Then, the transmission slider mechanism is rotated, which drives the transmission slider 5 to move inward, thereby disengaging the slider 3 from the guide rail 2, allowing the entire support frame 4 structure to be removed.

[0050] Specifically, such as Figure 2-4 and Figure 6 As shown, the transmission slider mechanism includes:

[0051] Rotating block 81 is rotatably mounted in arc-shaped rotating guide groove 43, and a connecting keyway 811 extending radially is provided on the axial first end face of rotating block 81.

[0052] The connecting key 82 is slidably disposed in the connecting keyway 811 of the rotating block 81. The first end of the connecting key 82 is hinged to the end of the transmission slider 5 away from the slider 3. The length of the connecting key 82 is less than the length of the connecting keyway 811.

[0053] Operating handle 83, the first end of which is hinged to the axial second end face of rotating block 81;

[0054] The limiting protrusion 84 is fixedly installed on the support frame 4 and is suitable for limiting the rotation of the operating handle 83.

[0055] In this embodiment, as Figure 1-2As shown, the transmission slider mechanism can convert rotation into linear transmission, realizing the quick assembly and disassembly of the support frame. When the support frame needs to be disassembled, the operator can rotate the operating handle 83 to drive the rotating block 81 to rotate within the arc-shaped rotating guide groove 43. The rotation of the rotating block 81 drives the connecting keyway 811 to rotate, which in turn drives the connecting key 82 to rotate within the connecting keyway 811. Since the connecting key 82 is hinged to the transmission slider 5, the movement of the connecting key 82 will drive the transmission slider 5 to move inward along the sliding connecting groove, thereby causing the slider 3, which is fixedly connected to it, to disengage from the guide rail 2. The side of the transmission slider 5 away from the slider 3 is provided with a pin hole (not shown in the figure), and the connecting key 82 is provided with a pin corresponding to the pin hole.

[0056] Specifically, such as Figure 1-2 As shown, a quick-connection mechanism is provided between the manhole cover 7 and the telescopic movable end of the lifting device 6. The quick-connection mechanism includes:

[0057] The guide buckle 91 is rotatably connected to the manhole cover 7. The upper end of the guide buckle 91 passes through the manhole cover 7, and the lower end of the guide buckle 91 is fixedly connected to an annular abutment plate 911. An axially extending guide block 912 is provided on the annular abutment plate 911, and a locking block 913 extends radially outward from the middle of the outer peripheral surface of the guide block 912.

[0058] The guide nut 92 is fixedly installed on the telescopic movable end of the lifting device 6. The guide nut 92 includes an upwardly extending abutment disc 921. The abutment disc 921 is provided with a radial guide groove 922 that matches the guide block 912. The abutment disc 921 is provided with an arc-shaped groove 923 that communicates with the radial guide groove 922 and extends circumferentially. The outer wall of the abutment disc 921 is provided with a locking arc groove 924 that communicates with the arc groove 923 and cooperates with the locking block 913.

[0059] In this embodiment, as Figure 7-8 As shown, when installing a manhole cover, first align the guide block 912 of the male guide buckle 91 with the radial guide groove 922 on the female guide buckle 92, inserting the guide block 912 along the radial guide groove 922. Simultaneously, the annular abutment plate 911 and the abutment disc 921 fit tightly together to ensure a stable connection. During installation, after the guide block 912 is inserted along the radial guide groove 922, rotating the male guide buckle 91 moves the locking block 913 of the guide block 912 along the arc groove 923 into the locking arc groove 924, thus forming a reliable lock.

[0060] Specifically, such as Figure 1-2 and Figure 9 As shown, the liftable manhole cover also includes a rotating connecting handle 93, which is fixedly connected to the upper end of the guide buckle 91 extending on the manhole cover 7. The rotating connecting handle 93 is adapted to drive the guide buckle 91 to rotate.

[0061] Specifically, such as Figure 9 As shown, the upper surface of the manhole cover 7 is provided with a rotation limiting protrusion 71, which is adapted to limit the rotation of the rotating connecting handle 93.

[0062] In this embodiment, as Figure 2 and Figure 9 As shown, the rotating connecting handle 93 is fixedly connected to the upper end of the guide buckle 91. The rotating connecting handle 93 can provide sufficient torque, allowing the operator to easily complete the installation and removal of the manhole cover 7.

[0063] When the rotary connecting handle 93 is rotated to the preset position, the rotary connecting handle 93 is lowered. The rotary connecting handle 93 will abut against the rotation limit protrusion 71, restricting the rotation of the rotary connecting handle 93. In addition, a conspicuous direction indicator mark can be set on the rotary connecting handle 93 to indicate the rotation direction and limit position, further improving the intuitiveness and safety of operation.

[0064] Specifically, such as Figure 1-2 As shown, the manhole cover 7 also has anti-slip texture.

[0065] Specifically, such as Figure 3 As shown, the lifting device 6 is a cylinder.

[0066] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A retractable manhole cover, characterized in that, include: Pipe body (1); A pair of parallel guide rails (2) are fixedly installed on the inner wall of the pipe body (1) along the axial direction of the pipe body (1); A pair of sliders (3), the sliders (3) being slidably disposed on corresponding guide rails (2); A support frame (4) is provided with slider grooves (41) symmetrically arranged on both sides along the length direction. The support frame (4) is detachably embedded between a pair of sliders (3) through the slider grooves (41). One of the slider grooves (41) of the support frame (4) is provided with a sliding connection groove extending along the length direction. The side of the support frame (4) is provided with an arc-shaped rotating guide groove (43) that communicates with the sliding connection groove. A transmission slider (5) is slidably disposed in the sliding connection groove, and one end of the transmission slider (5) is fixedly connected to the slider (3); A lifting device (6) is fixedly installed on the support frame (4), and the lifting device (6) is provided with a telescopic movable end; Manhole cover (7), which is detachably installed on the telescopic movable end of the lifting device (6); The transmission slider transmission mechanism is movably installed in the arc-shaped rotating guide groove (43) of the support frame (4). The transmission slider transmission mechanism is hinged to the other end of the transmission slider (5). The transmission slider transmission mechanism is adapted to rotate and drive the transmission slider (5) to move in the sliding connection groove, thereby driving the corresponding slider (3) to disengage from the corresponding guide rail (2).

2. The retractable manhole cover according to claim 1, characterized in that, The transmission slider mechanism includes: A rotating block (81) is rotatably mounted in the arc-shaped rotating guide groove (43), and a connecting keyway (811) extending radially is provided on the axial first end face of the rotating block (81). A connecting key (82) is slidably disposed in the connecting keyway (811) of the rotating block (81). The first end of the connecting key (82) is hinged to the end of the transmission slider (5) away from the slider (3). The length of the connecting key (82) is less than the length of the connecting keyway (811). An operating handle (83) is provided, the first end of which is hinged to the axial second end face of the rotating block (81). A limiting protrusion (84) is fixedly installed on the support frame (4) and is adapted to restrict the rotation of the operating handle (83).

3. The retractable manhole cover according to claim 2, characterized in that, A quick-connection mechanism is provided between the manhole cover (7) and the telescopic movable end of the lifting device (6), the quick-connection mechanism comprising: A guide buckle (91) is rotatably connected to the manhole cover (7). The upper end of the guide buckle (91) passes through the manhole cover (7). The lower end of the guide buckle (91) is fixedly connected to an annular abutment plate (911). An axially extending guide block (912) is provided on the annular abutment plate (911). A locking block (913) extends radially outward from the middle of the outer circumferential surface of the guide block (912). A guide buckle (92) is fixedly installed on the telescopic movable end of the lifting device (6). The guide buckle (92) includes an upwardly extending abutment disc (921). The abutment disc (921) is provided with a radial guide groove (922) that matches the guide block (912). The abutment disc (921) is provided with an arc-shaped groove (923) that communicates with the radial guide groove (922) and extends circumferentially. The outer wall of the abutment disc (921) is provided with a locking arc groove (924) that communicates with the arc-shaped groove (923) and cooperates with the locking block (913).

4. The retractable manhole cover according to claim 3, characterized in that, It also includes a rotating connecting handle (93), which is fixedly connected to the upper end of the guide male buckle (91) extending on the manhole cover (7), and the rotating connecting handle (93) is adapted to drive the guide male buckle (91) to rotate.

5. The retractable manhole cover according to claim 4, characterized in that, The upper surface of the manhole cover (7) is provided with at least one rotation limiting protrusion (71), which is adapted to limit the rotation of the rotary connecting handle (93).

6. The retractable manhole cover according to claim 1, characterized in that, The manhole cover (7) is also provided with anti-slip texture.

7. The retractable manhole cover according to claim 1, characterized in that, The lifting device (6) is a cylinder.

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