Portable well lid opener

Abstract

The utility model relates to a portable well lid opener which comprises a rod body (10). A support bar (21); a connecting cylinder (22) and a stabilizing block (23); the lifting rod (24) is provided with a containing groove (25); during use, a connecting cylinder (22) is aligned and inserted into a hole site in a well lid, then the bottom of a supporting rod (21) makes contact with the ground to serve as a support, a lifting rod (24) is controlled to slide downwards, the upper end face of a containing groove (25) in the bottom of the lifting rod (24) makes contact with the upper end face of a stabilizing block (23), and the stabilizing block (23) is pushed to rotate outwards to be unfolded and make contact with the lower surface of the well lid; compared with a traditional mode of lifting a T-shaped hook, the manhole cover is not prone to being damaged, and particularly the manhole cover with material aging caused by long-term use is not prone to being damaged; and the end part, far away from the connecting cylinder (22), of the rod body (10) is pressed downwards, so that the manhole cover is opened in a more labor-saving manner, manpower is saved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole cover opening, in particular to a portable manhole cover opener. Background Art

[0002] Manhole covers are an indispensable part of urban infrastructure. They are mainly used to cover the openings of underground facilities, such as water supply and drainage pipes, cable ducts, gas pipelines, etc., to prevent pedestrians or vehicles from accidentally falling in, and to protect underground facilities from direct external influences. Manhole covers are generally round covers made of materials such as metal, high-strength fiber cement concrete or resin. Another important function of manhole covers is to facilitate the staff to open the manhole covers for daily inspection and maintenance of pipelines. For example, when gas workers conduct on-site inspections, they need to open the manhole covers to conduct pipeline inspections and measurements. Pipeline manhole covers are heavy iron manhole covers, and the contact parts of the manhole ring and the manhole cover are prone to rust and accumulation of soil. It is not easy to open the manhole cover using traditional T-hooks, which consumes manpower and affects work efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is that it is difficult to open the manhole cover by using the traditional T-hook, which consumes manpower and affects the work efficiency.

[0004] In order to solve the above problems, the utility model provides a portable manhole cover opener, including a rod body, a support rod capable of contacting the ground is provided in the middle of the rod body, a connecting tube is rotatably provided at the end of the rod body, a stabilizing block is rotatably provided at the lower end of the connecting tube, and a plurality of stabilizing blocks are arranged at intervals along the circumference of the connecting tube; a lifting rod is slidably sleeved in the connecting tube, a receiving groove corresponding to the stabilizing block is provided at the bottom of the lifting rod, and the upper and lower end surfaces of the receiving groove can respectively contact with the upper and lower end surfaces of the stabilizing block to rotate the stabilizing block.

[0005] The portable manhole cover opener provided by the utility model also has the following technical features:

[0006] The stabilizing block is a triangular block, a first corner of the stabilizing block is rotatably connected to the lower end of the connecting tube, a second corner of the stabilizing block is placed in the receiving groove, and the third corner of the stabilizing block is arranged away from the lifting rod.

[0007] The outer surface of the stabilizing block is an inwardly concave arc surface.

[0008] An adjusting knob is rotatably provided at the upper end of the connecting tube, an internal thread is provided on the adjusting knob, and an external thread is correspondingly provided on the top of the lifting rod.

[0009] A connecting frame is fixed at the end of the rod body, and a connecting cylinder is rotatably arranged in the connecting frame.

[0010] A slide groove is provided in the middle of the rod body along its length direction, and an adjustment frame is slidably arranged in the slide groove. The bottom of the adjustment frame is fixed to the upper end of the support rod, and the lower end of the support rod can contact the ground.

[0011] The slide groove is provided with an adjustment groove, and a plurality of adjustment grooves are arranged at intervals along the length direction of the rod body;

[0012] The adjusting frame is provided with a telescopic slot, in which a bayonet is installed via a compression spring, and the end of the bayonet slides along the slide slot and can be engaged with the adjusting slot.

[0013] The support rod is tilted from top to bottom and from away from the connecting tube to close to the connecting tube.

[0014] The lower end cross bar of the support rod is fixed vertically, and the cross bar can contact the ground.

[0015] The utility model has the following beneficial effects: first align the connecting tube and insert it into the hole on the manhole cover, then make the bottom of the support rod contact with the ground as support, control the lifting rod to slide downward, the upper end surface of the accommodating groove at the bottom of the lifting rod contacts with the upper end surface of the stabilizing block, and pushes the stabilizing block to rotate outward and expand, and contact with the lower surface of the manhole cover. Compared with the traditional lifting method of Latin hook, it is not easy to damage the manhole cover, especially the manhole cover with material aging caused by long-term use; then press downward the end of the rod body away from the connecting tube, so as to realize more labor-saving opening of the manhole cover, save manpower and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A partial cross-sectional view of an axonometric drawing of the utility model from a first viewing angle;

[0017] Figure 2 for Figure 1 Exploded view of local parts;

[0018] Figure 3 It is the structural shape diagram of the stable block;

[0019] Figure 4 It is a partial cross-sectional view of the axonometric drawing of the utility model from the second viewing angle. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0021] like Figures 1 to 4As shown, the portable manhole cover opener of the utility model includes a rod body 10, a support rod 21 capable of contacting the ground is provided in the middle of the rod body 10, a connecting tube 22 is rotatably provided at the end of the rod body 10, a stabilizing block 23 is rotatably provided at the lower end of the connecting tube 22, and a plurality of stabilizing blocks 23 are arranged at intervals along the circumference of the connecting tube 22; a lifting rod 24 is slidably sleeved in the connecting tube 22, a receiving groove 25 corresponding to the stabilizing block 23 is provided at the bottom of the lifting rod 24, and the upper and lower end surfaces of the receiving groove 25 can respectively contact with the upper and lower end surfaces of the stabilizing block 23 to rotate the stabilizing block 23.

[0022] First, align and insert the connecting tube 22 into the hole on the manhole cover, then make the bottom of the support rod 21 contact the ground as a support, control the lifting rod 24 to slide downward, and the upper end surface of the accommodating groove 25 at the bottom of the lifting rod 24 contacts the upper end surface of the stabilizing block 23, and push the stabilizing block 23 to rotate outward and expand, and contact the lower surface of the manhole cover. Compared with the traditional Latin hook method, it is not easy to damage the manhole cover, especially the manhole cover with material aging caused by long-term use; then press downward the end of the rod body 10 away from the connecting tube 22 to realize more labor-saving opening of the manhole cover, save manpower and improve work efficiency.

[0023] The corresponding number of the stabilizing blocks 23 and the accommodating grooves 25 is greater than or equal to three groups, so as to improve the stability when opening the manhole cover.

[0024] The cross section of the receiving groove 25 is a square, and the square has two upper and lower end faces and two left and right side faces. A plurality of receiving grooves 25 can be arranged in a connected manner.

[0025] Preferably, see Figure 2 , 3 The stabilizing block 23 is a triangular block, a first corner 31 of the stabilizing block 23 is rotatably connected to the lower end of the connecting tube 22 , a second corner 32 of the stabilizing block 23 is placed in the accommodating groove 25 , and a third corner 33 of the stabilizing block 23 is arranged away from the lifting rod 24 .

[0026] The first corner 31 , the second corner 32 , and the third corner 33 of the stabilizing block 23 are all rounded.

[0027] The stabilizing block 23 is preferably an obtuse isosceles triangle, and the second angle 32 is equal to the third angle 33 .

[0028] Preferably, the outer surface of the stabilizing block 23 is an inwardly concave arc surface 34 .

[0029] The connection between the arc surface 34 of the plurality of stabilizing blocks 23 and the manhole cover is made more stable and less prone to shaking, thereby preventing the manhole cover from falling and being damaged.

[0030] Among them, the arc surface between the first corner 31 and the second corner 32 and the corresponding rounded corner can contact the upper end surface of the accommodating groove 25, and when the lifting rod 24 moves downward, it can push the stabilizing block 23 to rotate outward and expand; the arc surface between the second corner 32 and the third corner 33 and the corresponding rounded corner can contact the lower end surface of the accommodating groove 25, and when the lifting rod 24 moves upward, it can push the stabilizing block 23 to rotate inward and retract.

[0031] Preferably, an adjusting knob 26 is rotatably provided at the upper end of the connecting tube 22 , an internal thread is provided on the adjusting knob 26 , and an external thread is correspondingly provided at the top of the lifting rod 24 .

[0032] The outer surface of the adjusting knob 26 is provided with anti-slip grooves.

[0033] Preferably, a connecting frame 27 is fixed to the end of the rod body 10 , and a connecting cylinder 22 is rotatably arranged inside the connecting frame 27 .

[0034] Among them, reinforcing ribs are provided at the fixing points between the end of the rod body 10 and the connecting frame 27 to enhance the connection stability between the two.

[0035] Preferably, see Figure 1 , 4 A slide groove 41 is provided in the middle of the rod body 10 along its length direction, and an adjustment frame 42 is slidably provided in the slide groove 41. The bottom of the adjustment frame 42 is fixed to the upper end of the support rod 21, and the lower end of the support rod 21 can contact the ground to adjust the distance between the support rod 21 and the connecting tube 22, that is, the degree of effort when the device is used can be adjusted according to actual use.

[0036] The connection frame 27 is provided with a sliding hole, and the rod body 10 is sleeved in the sliding hole and slides relatively therein.

[0037] Wherein, reinforcing ribs are provided at the fixing positions of the connection frame 27 and the upper ends of the support rods 21 to enhance the connection stability between the two.

[0038] Preferably, an adjustment slot 43 is provided in the slide slot 41, and a plurality of adjustment slots 43 are arranged at intervals along the length direction of the rod body 10;

[0039] The adjusting frame 42 is provided with a telescopic slot 44 , in which a bayonet 46 is installed via a compression spring 45 . The end of the bayonet 46 slides along the slide slot 41 and can be engaged with the adjusting slot 43 .

[0040] Among them, two slide grooves 41 are symmetrically arranged about the vertical center plane of the rod body 10. Of course, two groups of adjustment grooves 43, telescopic grooves 44, compression springs 45, and latches 46 are also correspondingly arranged to enhance the connection stability between the adjustment frame 42 and the rod body 10.

[0041] Among them, the transverse cross-section of the pin 46 is square, the end of the pin 46 is provided with a rounded corner, and the bottom of the adjustment groove 43 is correspondingly provided with a rounded corner. Those skilled in the art can change the depth of the adjustment groove 43 according to actual applications to achieve that when the end of the pin 46 slides along the slide groove 41, it can switch to engage with different adjustment grooves 43, that is, it can slide out from one adjustment groove 43 and slide into another adjustment groove 43.

[0042] Preferably, the support rod 21 is tilted from top to bottom and from away from the connecting tube 22 to close to the connecting tube 22 to achieve more labor-saving opening of the manhole cover.

[0043] Preferably, the lower end cross bar 28 of the support rod 21 is fixed vertically, and the cross bar 28 can contact the ground to increase the contact area between the support rod 21 and the ground and enhance the stability when opening the manhole cover.

[0044] The working principle of the utility model is as follows:

[0045] When the manhole cover needs to be opened, first align the connecting tube 22 and insert it into the hole on the manhole cover, move the adjustment frame 42 to make it slide along the slide groove 41, and lock the distance between the support rod 21 and the connecting tube 22 through the adjustment groove 43 and the bayonet 46, so that the cross bar 28 is in contact with the ground as a support;

[0046] By turning the adjusting knob 26, the lifting rod 24 is driven to slide downward through the threaded fit. Since the upper end surface of the receiving groove 25 at the bottom of the lifting rod 24 contacts the arc surface between the first corner 31 and the second corner 32 of the stabilizing block 23, the stabilizing block 23 is pushed to rotate outward and expand, so that the arc surface 34 between the first corner 31 and the third corner 33 of the stabilizing block 23 contacts the lower surface of the manhole cover. The connection between the arc surfaces 34 of the multiple stabilizing blocks 23 and the manhole cover is more stable and not easy to shake, thereby preventing the manhole cover from falling and being damaged. Compared with the traditional Latin hook method, it is not easy to damage the manhole cover, especially the manhole cover with material aging caused by long-term use; then press downward the end of the rod body 10 away from the connecting tube 22 to realize more labor-saving opening of the manhole cover, save manpower, and improve work efficiency;

[0047] After opening and placing the manhole cover, rotate the adjusting knob 26 in the opposite direction to slide the lifting rod 24 upward. Since the lower end surface of the receiving groove 25 at the bottom of the lifting rod 24 contacts the arc surface between the second corner 32 and the third corner 33 of the stabilizing block 23, the stabilizing block 23 is pushed to rotate inward and retract, so as to separate the device from the manhole cover.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A portable manhole cover opener, comprising a rod body (10), characterized in that: A support rod (21) capable of contacting the ground is provided in the middle of the rod body (10); a connecting tube (22) is rotatably provided at the end of the rod body (10); a stabilizing block (23) is rotatably provided at the lower end of the connecting tube (22); a plurality of stabilizing blocks (23) are arranged at intervals along the circumference of the connecting tube (22); a lifting rod (24) is slidably sleeved in the connecting tube (22); a receiving groove (25) corresponding to the stabilizing block (23) is provided at the bottom of the lifting rod (24); and upper and lower end surfaces of the receiving groove (25) can respectively contact with upper and lower end surfaces of the stabilizing block (23) so that the stabilizing block (23) can rotate.

2. The portable manhole cover opener according to claim 1, characterized in that: The stabilizing block (23) is a triangular block, a first corner (31) of the stabilizing block (23) is rotatably connected to the lower end of the connecting tube (22), a second corner (32) of the stabilizing block (23) is disposed in the receiving groove (25), and the third corner (33) of the stabilizing block (23) is disposed away from the lifting rod (24).

3. The portable manhole cover opener according to claim 2, characterized in that: The outer surface of the stabilizing block (23) is an inwardly concave arc surface (34).

4. The portable manhole cover opener according to claim 1, characterized in that: An adjusting knob (26) is rotatably provided at the upper end of the connecting tube (22), an internal thread is provided on the adjusting knob (26), and an external thread is correspondingly provided at the top of the lifting rod (24).

5. The portable manhole cover opener according to claim 1, characterized in that: A connecting frame (27) is fixed to the end of the rod body (10), and a connecting cylinder (22) is rotatably arranged inside the connecting frame (27).

6. The portable manhole cover opener according to claim 1, characterized in that: A slide groove (41) is provided in the middle of the rod body (10) along its length direction, an adjustment frame (42) is slidably arranged in the slide groove (41), the bottom of the adjustment frame (42) is fixed to the upper end of the support rod (21), and the lower end of the support rod (21) can contact the ground.

7. The portable manhole cover opener according to claim 6, characterized in that: An adjustment groove (43) is provided in the slide groove (41), and a plurality of adjustment grooves (43) are arranged at intervals along the length direction of the rod body (10); The adjusting frame (42) is provided with a telescopic slot (44), a latch (46) is installed in the telescopic slot (44) via a compression spring (45), and an end of the latch (46) slides along the slide slot (41) and can be latched with the adjusting slot (43).

8. The portable manhole cover opener according to claim 1, characterized in that: The support rod (21) is arranged to be inclined from top to bottom and from away from the connecting tube (22) to close to the connecting tube (22).

9. The portable manhole cover opener according to claim 1, characterized in that: The cross bar (28) at the lower end of the support rod (21) is fixed vertically, and the cross bar (28) can be in contact with the ground.

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