Rotary clamping type steel fiber well lid

Abstract

The utility model relates to the technical field of well lids, in particular to a rotary clamping type steel fiber well lid which comprises a base and a lid body used for covering the base, and a plurality of clamping grooves distributed in the circumferential direction of the lid body are formed in the lid body. A clamping mechanism is arranged on the base, the clamping mechanism comprises a circular ring which is rotationally connected to the inner circumferential side of the base and is coaxial with the base, and clamping pieces which are in one-to-one correspondence with the clamping grooves are arranged on the circular ring; the clamping piece can be clamped with the clamping groove after rotating by an angle relative to the clamping groove in the circumferential direction behind the clamping groove so that the cover body can be locked relative to the base in the axial direction. The clamping piece is at least partially exposed in the clamping groove; when clamping locking or unlocking is carried out through rotation, the circular ring is rotated instead of directly rotating the cover body, and compared with the cover body, the circular ring is much lighter, so that more labor is saved during rotation.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole covers, in particular to a rotary clamping type steel fiber manhole cover. Background Art

[0002] As a municipal road item, manhole covers are widely used. Manhole covers are generally composed of a cover body and a base. The base is pre-buried and fixed on the ground during construction, and the manhole cover is closed on the base in an openable manner.

[0003] In order to improve the strength, some manhole covers are currently mainly made of cast steel fibers; in addition, in some manhole covers in the related art, in order to make the cover body relatively stable after being closed on the base and not prone to rollover, a clamping structure is set between the cover body and the base. A common example is a clamping groove on the peripheral wall of the cover body and a clamping block on the base. When in use, the cover body is horizontally rotated at an angle relative to the base so that the clamping block and the clamping groove engage with each other to lock the cover body and make it not prone to rollover. For this type of manhole cover, please refer to the steel fiber anti-rollover manhole cover disclosed in announcement number CN207047901U.

[0004] Although the above-mentioned manhole cover is stable, the cover body needs to be rotated when locking or unlocking. The steel fiber manhole cover is different from manhole covers made of other materials. The cover body itself is relatively heavy, so it is more laborious to rotate the cover body, so there is still room for improvement. Utility Model Content

[0005] In order to solve at least one of the technical problems mentioned in the background technology, the purpose of the utility model is to provide a rotating clamping type steel fiber manhole cover.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A rotary clamping steel fiber manhole cover comprises a base and a cover body for covering the base, the cover body is provided with a plurality of clamping grooves distributed along the circumference of the cover body; the base is provided with a clamping mechanism, the clamping mechanism comprises a circular ring rotatably connected to the inner circumference of the base and coaxially arranged with the base, the circular ring is provided with clamping pieces corresponding to the clamping grooves one by one, the clamping pieces can be engaged with the clamping grooves after being clamped in the grooves and rotated at an angle relative to the circumference of the clamping grooves so that the cover body is locked axially relative to the base; and the clamping piece is at least partially exposed in the clamping groove.

[0008] As an optional embodiment of the utility model, the card slot is arc-shaped and is coaxially arranged with the cover body; the card slot includes an insertion slot and a locking slot which are connected in sequence along the circumference of the cover body; the card component includes a rod and a head; the lower end of the rod is fixed to the ring, and the upper end is fixed to the head; the diameter of the head is larger than the diameter of the rod and larger than the width of the locking slot; when locked, the head vertically passes through the insertion slot, and the rod slides into the locking slot after the ring rotates an angle, and the head is located above the locking slot to limit the cover from slipping out upward.

[0009] As an optional implementation of the utility model, the clamping member is a first bolt, the cap end of the first bolt constitutes the head, the screw rod of the first bolt constitutes the rod, and the first bolt is threadedly connected to the ring.

[0010] As an optional implementation of the utility model, a countersunk groove is provided on the top of the cover body; the locking groove is provided on the bottom wall of the countersunk groove; in the locked state, the head is located in the countersunk groove and does not extend beyond the top surface of the cover body.

[0011] As an optional embodiment of the utility model, the inner wall of the base is provided with a first concave step and a second concave step which are annular and coaxially arranged with the base; wherein the second concave step is lower than the first concave step; the first concave step is used to support the cover body; the circular ring is rotatably arranged on the first concave step and the top surface of the circular ring is not higher than the first concave step.

[0012] As an optional embodiment of the utility model, an arc-shaped guide groove is opened on the circular ring and is arranged along the circumference of the circular ring; the arc-shaped guide groove is matched with a guide member, and the guide member includes a guide rod and a stopper, the guide rod is vertically inserted into the arc-shaped guide groove, and the lower end of the guide rod is fixed on the second recessed step, the stopper is fixed on the upper end of the guide rod, and the stopper is located above the guide groove to limit the circular ring from vertically escaping from the guide rod.

[0013] As an optional implementation manner of the present utility model, the guide member is a second bolt, and the second bolt is threadedly connected to the second recessed step.

[0014] Compared with the prior art, the advantages of adopting this solution are:

[0015] Although the present invention also adopts a rotating clamping method to fix the cover body, in the present invention, when rotating to lock or unlock, it is the ring that is rotated instead of directly rotating the cover body. Compared with the cover body, the ring is much lighter, so it is easier to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an exploded view of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model in an unlocked state;

[0018] Figure 3 This is a structural schematic diagram of the utility model in a locked state;

[0019] Figure 4 It is a cross-sectional view of the utility model in a locked state;

[0020] Figure 5 is a schematic diagram of the structure of the base;

[0021] Figure 6 It is a schematic diagram of the structure of the cover body. DETAILED DESCRIPTION

[0022] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0023] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operate in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0024] See also Figure 1-6 As shown, this embodiment provides a rotating clamping steel fiber manhole cover, including a base 1 and a cover body 2 for covering the base 1. Specifically, as shown in Figure 1 As shown, a first concave step 11 in the shape of a circular ring 3 and coaxially arranged with the base 1 is formed on the inner peripheral wall of the base 1 . When the cover 2 is closed, the cover body 2 is placed in the base 1 and is supported and lifted by the first concave step 11 .

[0025] In this embodiment, the cover body 2 is formed by casting steel fibers. Specifically, a steel skeleton is made, and then steel fibers and concrete are mixed and cast on the skeleton to form the steel fiber cover body 2. Of course, the base 1 can also be made by the above method to form a steel fiber base 1.

[0026] like Figure 1 As shown, the cover body 2 is provided with a plurality of slots 21 distributed along the circumference of the cover body 2; the base 1 is provided with a holding mechanism, which includes a ring 3 rotatably connected to the inner circumference of the base 1 and coaxially arranged with the base 1, and the ring 3 is provided with a clamping piece corresponding to the slots 21 one by one. For example, in this embodiment, two slots 21 are provided, and two corresponding clamping pieces are also provided.

[0027] The clamping member can be engaged with the clamping slot 21 after rotating circumferentially at an angle relative to the clamping slot 21 behind the clamping slot 21 so that the cover body 2 is locked relative to the base 1 in the axial direction. Figure 4 As shown, after the cover body 2 is locked, the cover body 2 is basically unable to move relative to the base 1 in the axial direction.

[0028] In addition, in the locked state, Figure 3 As shown, the card is at least partially exposed in the card slot 21, and the exposed part of the card is used as the part for manual force application, that is, the card is manually pushed to drive the ring 3 to rotate, and then the rotation of the ring 3 can drive other card members to rotate synchronously, so that all card members can be locked or unlocked synchronously.

[0029] Although the cover body 2 is fixed by rotating and clamping in this solution, in this solution, when rotating and locking or unlocking, the ring 3 is rotated instead of directly rotating the cover body 2. Compared with the cover body 2, the ring 3 is much lighter, so it is more labor-saving to rotate.

[0030] In this embodiment, the card slot 21 is arc-shaped and is coaxially arranged with the cover body 2; the card slot 21 includes an insertion slot 211 and a locking slot 212 which are sequentially connected along the circumference of the cover body 2; wherein the width of the locking slot 212 is smaller than the width of the insertion slot 211.

[0031] like Figure 1 As shown, the clamp includes a rod 42 and a head 41; the rod 42 is arranged so that the lower end of the rod 42 is fixed to the ring 3, and the upper end of the rod 42 is fixed to the head 41; the diameter of the head 41 is larger than the diameter of the rod 42 and larger than the width of the locking groove 212; the diameter of the rod 42 is smaller than the width of the locking groove 212; the size of the insertion groove 211 must be able to meet the vertical passage of the head 41, that is, the insertion groove 211 is larger than the head 41.

[0032] When installing the cover body 2, lift the cover body 2 so that the insertion groove 211 on the cover body 2 is aligned with the head 41, and then lower the cover body 2. Finally, the cover body 2 is seated on the first recessed step 11, and the head 41 passes upward from the insertion groove 211. Then, the head 41 is manually moved to drive the ring 3 to rotate an angle so that the rod 42 slides into the locking groove 212. At this time, the head 41 is located above the locking groove 212, and the cover body 2 can be upper-limited, that is, under the restriction of the head 41, the cover body 2 cannot be pulled up, thereby achieving the locking of the cover body 2.

[0033] On the contrary, when unlocking the cover body 2, it is only necessary to rotate the ring 3 in the opposite direction to return the head 41 to the insertion groove 211 position to achieve unlocking, and then lift the cover body 2 upward.

[0034] In order to be able to replace the clamping part, in this embodiment, the clamping part is a first bolt, the cap end of the first bolt constitutes the head 41, the screw rod of the first bolt constitutes the rod 42, and the first bolt is threadedly connected to the ring 3.

[0035] In order to prevent the clamp from protruding from the upper surface of the cover body 2, in this embodiment, Figure 3-Figure 6 As shown, a countersunk groove 22 is provided on the top of the cover body 2; the locking groove 21 is provided on the bottom wall of the countersunk groove 22; in the locked state, the head 41 is located in the countersunk groove 22 and does not exceed the top surface of the cover body 2.

[0036] In addition, if Figure 1 and Figure Figure 5 As shown, the inner wall of the base 1 is also provided with an annular second concave step 12 coaxially arranged with the base 1, and the second concave step 12 is mainly used to place the ring 3, wherein the second concave step 12 is lower than the first concave step 11; the ring 3 is rotatably arranged on the first concave step 11 and the top surface of the ring 3 is not higher than the first concave step 11.

[0037] The second step 12 is provided to install the ring 3. Its significance is that after the cover body 2 is closed, the cover body 2 rests on the first step 11, and the first step 11 is higher than the second step 12. In this way, the cover body 2 will not press on the ring 3, so that the ring 3 does not bear the weight of the cover body 2, so that the ring 3 can rotate more smoothly.

[0038] In order to prevent the circular ring 3 from being pulled upward, in the present embodiment, an arc-shaped guide groove 31 is provided on the circular ring 3 along the circumference of the circular ring 3; two arc-shaped guide grooves 31 may be provided; the arc-shaped guide groove 31 is matched with a guide member, and the guide member includes a guide rod and a stopper, the guide rod is vertically inserted into the arc-shaped guide groove 31, and the lower end of the guide rod is fixed on the second recessed step 12, the stopper is fixed on the upper end of the guide rod, and the stopper is located above the guide groove 31 to limit the circular ring 3 from vertically escaping from the guide rod.

[0039] Specifically, the diameter of the blocking portion is larger than the diameter of the rod portion 42 and larger than the width of the arc-shaped guide groove 31; the diameter of the rod portion 42 is smaller than the width of the arc-shaped guide groove 31; the cooperation between the arc-shaped guide groove 31 and the guide rod guides the circumferential rotation of the ring 3; and the blocking portion plays a limiting role, limiting the ring 3 from being pulled up and out of the guide rod.

[0040] The guide member is preferably a second bolt 5 , which is threadedly connected to the second recessed step 12 . Specifically, the screw section of the second bolt 5 constitutes a guide rod, and the cap end of the second bolt 5 constitutes a stopper.

[0041] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A rotating clamping steel fiber manhole cover, comprising a base and a cover body for covering the base, characterized in that: The cover body is provided with a plurality of slots distributed along the circumference of the cover body; the base is provided with a clamping mechanism, which includes a circular ring rotatably connected to the inner circumference of the base and coaxially arranged with the base, and the circular ring is provided with clamping pieces corresponding to the slots one by one, and the clamping pieces can engage with the slots after being rotated at an angle relative to the circumference of the slot after being engaged in the slot so that the cover body is locked axially relative to the base; and the clamping piece is at least partially exposed in the slot.

2. The rotary clamping steel fiber manhole cover according to claim 1 is characterized in that: The card slot is arc-shaped and is coaxially arranged with the cover body; the card slot includes an insertion slot and a locking slot which are connected in sequence along the circumference of the cover body; the card member includes a rod and a head; the lower end of the rod is fixed to the ring, and the upper end is fixed to the head; the diameter of the head is larger than the diameter of the rod and larger than the width of the locking slot; when locked, the head passes vertically through the insertion slot, and the rod slides into the locking slot after the ring rotates an angle, and the head is located above the locking slot to limit the cover from slipping out upward.

3. The rotary clamping steel fiber manhole cover according to claim 2 is characterized in that: The clamping member is a first bolt, the cap end of the first bolt constitutes the head, the screw rod of the first bolt constitutes the rod, and the first bolt is threadedly connected to the ring.

4. The rotary clamping steel fiber manhole cover according to claim 2 is characterized in that: A countersunk groove is provided on the top of the cover body; the locking groove is provided on the bottom wall of the countersunk groove; in a locked state, the head is located in the countersunk groove and does not exceed the top surface of the cover body.

5. The rotary clamping steel fiber manhole cover according to claim 1 is characterized in that: The inner wall of the base is provided with a first concave step and a second concave step which are annular and coaxially arranged with the base; wherein the second concave step is lower than the first concave step; the first concave step is used to support the cover body; the circular ring is rotatably arranged on the first concave step and the top surface of the circular ring is not higher than the first concave step.

6. The rotary clamping steel fiber manhole cover according to claim 5, characterized in that: The circular ring is provided with an arc-shaped guide groove arranged along the circumference of the circular ring; the arc-shaped guide groove is matched with a guide member, and the guide member includes a guide rod and a stopper, the guide rod is vertically inserted into the arc-shaped guide groove, and the lower end of the guide rod is fixed on the second recessed step, the stopper is fixed on the upper end of the guide rod, and the stopper is located above the guide groove to limit the circular ring from vertically escaping from the guide rod.

7. The rotary clamping steel fiber manhole cover according to claim 6, characterized in that: The guide member is a second bolt, and the second bolt is threadedly connected to the second recessed step.

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