Hinge type well lid

Abstract

The utility model relates to the technical field of well lids, and discloses a hinge type well lid which comprises a base, the upper portion of the base is fixedly connected with a first well seat, the outer portion of the first well seat is fixedly connected with a second well seat, and one side of the first well seat and one side of the second well seat are fixedly connected with a spherical shaft hinge box. The hinge type well lid is installed in a spherical shaft hinge box through a connecting type hinge body, a shaft limiting rod type hinge body and a sliding groove eccentric connecting rod type hinge assembly and connected with an installation plate. Meanwhile, mounting grooves are formed in a connecting type hinge body, a shaft limiting rod type hinge body and a sliding groove eccentric connecting rod type hinge assembly, grooves are formed in a second duck head plate and a third duck head plate, in the well lid overturning process, the grooves provide moving space for a mounting plate, the well lid can be driven to overturn by 180 degrees, and the purpose that the well lid can be overturned by 180 degrees is successfully achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of manhole covers, in particular to a hinged manhole cover. Background Art

[0002] Manhole covers are a common device in daily life. They are mainly used in inspection wells of underground pipelines or facilities, sewer manholes, power manholes and other occasions. There are many structural forms and specifications. With the development of urban construction, higher requirements have been put forward for municipal administration. The current country has put forward "six protection" requirements for manhole covers: anti-falling, anti-settling, anti-displacement, anti-noise, anti-bounce, and anti-theft. On the premise of meeting the "six protection" standards, high-end manhole covers are also required to be able to flip 180° for easy installation. Existing manhole covers on the market usually adopt the following solutions to solve the "six protections": anti-falling - installing an anti-fall net; anti-settling - strengthening the support strength of the manhole seat through the foundation concrete structure, and adding a manhole seat ring; anti-displacement - strengthening the support strength of the manhole seat through the foundation concrete structure, and pre-embedded bolts to connect the structure with the manhole seat; anti-noise - installing rubber pads at the junction of the manhole seat and the manhole cover for shock absorption; anti-bounce - connecting the manhole cover and the manhole seat as one with bolts; anti-theft - using a hinge shaft for connection.

[0003] However, the existing manhole covers on the market have the following problems: there are many vehicles coming and going on the municipal main roads, and the manhole covers are rolled over frequently. The rubber pads age after a period of use, resulting in loss of shock absorption effect and subsequent noise. At the same time, after the rubber pads age and fail, there is a gap between the joint between the manhole cover and the manhole seat, which gradually wears out the rubber pads, causing the manhole cover to bounce when the vehicle rolls over it. At the same time, the hinge shaft connection usually adopts a casting blank process, which is relatively rough, and collisions with the hinge shaft box occur during use, generating noise. At the same time, because the hinge gap is large, the hinge shaft cannot effectively prevent the manhole cover from shaking left and right during opening and closing, making it inconvenient for workers to install. Most of the manhole covers on the market cannot be flipped 180°, and it is easy for the manhole cover and the manhole seat to separate after flipping. For this reason, we have proposed a hinged manhole cover. Summary of the Invention

[0004] In response to the shortcomings of existing hinged manhole covers, the present invention provides a hinged manhole cover, which has the advantage of limiting the position of an axis limiting rod hinge body or a connecting hinge body or a slide eccentric connecting rod hinge assembly through a spherical axis hinge box, and the axis limiting rod hinge body or the connecting hinge body or the slide eccentric connecting rod hinge assembly can move inside the spherical axis hinge box, that is, during the process of flipping the manhole cover, the manhole cover moves upward as a whole. At the same time, when the manhole cover is flipped, friction between the manhole cover and the spherical axis hinge box and the base is avoided to hinder its movement, thereby solving the problems raised in the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a hinged manhole cover, comprising a base, the upper part of the base is fixedly connected to a first manhole seat, the outside of the first manhole seat is fixedly connected to a second manhole seat, one side of the first manhole seat and the second manhole seat is fixedly connected to a spherical shaft hinge box, the interior of the spherical shaft hinge box is movably connected with a connecting hinge body or an axis limiting rod hinge body or a slide groove eccentric connecting rod hinge assembly through a limiting structure, wherein the limiting structure can be a positioning pin or a wire rope, the top of the connecting hinge body, the axis limiting rod hinge body and the slide groove eccentric connecting rod hinge assembly is installed with a mounting plate, the side of the mounting plate is fixedly connected to the manhole cover, and the inner side of the manhole cover is fixedly connected to a second reinforcing rib.

[0006] Preferably, the connecting hinge body includes a first circular sleeve, the upper end of the first circular sleeve is fixedly connected to a mounting groove, and the interior of the lower end of the first circular sleeve is provided with a first duck head plate, wherein the limiting structure passes through the interior of the first duck head plate.

[0007] Preferably, the shaft limiting rod type hinge body includes a second circular sleeve, the lower end of the second circular sleeve is fixedly connected to the shaft limiting rod, a second mounting groove is opened inside the second circular sleeve and the shaft limiting rod, and the upper part of the second circular sleeve is fixedly connected to a second duck head plate, wherein the second mounting groove is in the shape of a long strip, and the limiting structure passes through the inside of the second mounting groove.

[0008] Preferably, the slide eccentric connecting rod type hinge assembly includes a movable ring, the upper part of the movable ring is fixedly connected to an eccentric connecting rod, the external part of the upper end of the movable ring is fixedly connected to a limiting block, the external part of the upper end of the eccentric block is sleeved with a third circular sleeve, the top end of the third circular sleeve is fixedly connected to a third duck head plate, and a positioning pin is installed between the third duck head plate and the mounting plate, a U-shaped limiting groove is provided inside the lower end of the third circular sleeve, wherein the eccentric connecting rod drives the limiting block to be arranged inside the U-shaped limiting groove, a movable groove is provided inside the side surface of the third duck head plate, and the eccentric connecting rod can extend to the inside of the movable groove.

[0009] Preferably, the sides of the first well seat and the second well seat are fixedly connected with a first reinforcing rib, the outside of the base is sequentially provided with a weight-reducing slide groove and a positioning hole, the inside of the base is installed with an anti-fall net, and a positioning seat is provided on one side of the anti-fall net.

[0010] Preferably, the spherical shaft hinge box is square and consists of an upper end, a slide groove, a lower end, and a bottom. The upper end of the spherical shaft hinge box is in parallel contact with the upper end of the second well seat.

[0011] Preferably, the manhole cover drives the mounting plate to rotate around the upper end of the connecting hinge body or the axis limiting rod hinge body or the slide groove eccentric connecting rod hinge assembly at a maximum angle of 180°, wherein the upper end of the manhole cover remains in the same horizontal plane as the upper end of the first well seat.

[0012] Preferably, a first threaded seat is fixedly connected to the inner side of the first well seat, and a second threaded seat is fixedly connected to the inside of the well cover at a position aligned with the first threaded seat, wherein a fastening bolt is installed inside the second threaded seat.

[0013] Preferably, the first reinforcing ribs are arranged at equal intervals outside the first well seat and the second well seat, and the lower end of the well cover is fitted on the upper part of the first well seat, and the upper end of the second well seat is in parallel contact with the top of the well cover.

[0014] Preferably, the connection between the manhole cover and the first manhole seat and the second manhole seat is machined, wherein the manhole cover and the first manhole seat are in a tightly fitted state.

[0015] Preferably, the connecting hinge body, the shaft limiting rod hinge body and the slide eccentric connecting rod hinge assembly are all fitted on the inner wall of the spherical shaft hinge box. At the same time, the connecting hinge body, the shaft limiting rod hinge body and the slide eccentric connecting rod hinge assembly contain the same structure of the mounting groove, the second duck head plate and the third duck head plate. The mounting groove, the second duck head plate and the third duck head plate are all connected to the mounting plate through positioning. The inner side of the mounting groove, the second duck head plate and the third duck head plate contains a concave groove, and the mounting plate can extend to the inside of the groove after being flipped over.

[0016] Preferably, a hanging ear is installed at the front end of the spherical axis hinge box, a direction groove is opened inside the spherical axis hinge box, and the top end of the hanging ear is parallel to the horizontal plane.

[0017] Compared with the existing hinged manhole cover, the present invention has the following beneficial effects:

[0018] 1. The hinged manhole cover is installed inside the spherical shaft hinge box through a connecting hinge body, an axis limiting rod hinge body and a slide eccentric connecting rod hinge assembly, and is connected to the mounting plate. At the same time, the mounting grooves installed inside the connecting hinge body, the axis limiting rod hinge body and the slide eccentric connecting rod hinge assembly, the second duck head plate and the third duck head plate contain grooves. During the flipping process of the manhole cover, the grooves provide activity space for the mounting plate and can drive the manhole cover to flip 180°, successfully solving the problem of the manhole cover being able to flip 180°.

[0019] 2. The hinged manhole cover can be replaced and installed into a connecting hinge body, an axis limiting rod hinge body and a slide eccentric connecting rod hinge assembly through a spherical axis hinge box, and the connecting hinge body, the axis limiting rod hinge body and the slide eccentric connecting rod hinge assembly can move up and down inside the spherical axis hinge box. In the process of flipping and opening the manhole cover, the connecting hinge body, the axis limiting rod hinge body and the slide eccentric connecting rod hinge assembly are controlled to move upward, that is, when the manhole cover is flipped, the manhole cover is prevented from contacting with the first manhole seat and the second manhole seat and causing wear, thereby improving the manhole cover and reducing wear, while improving stability during flipping.

[0020] 3. The hinged manhole cover is installed inside the first manhole seat and the second manhole seat through the manhole cover closure, and the first manhole seat, the second manhole seat and the manhole cover are machined to improve the fitting efficiency when the equipment is closed, and a fastening bolt is installed inside the second threaded seat. The fastening bolt passes through the second threaded seat and is threadedly installed inside the first threaded seat, which improves the stability of the manhole cover when the position is limited, reduces the phenomenon of the manhole cover jumping due to looseness when the manhole cover is presented, reduces wear and tear during equipment use, and thereby improves the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0022] Figure 2 This is a structural schematic diagram of the manhole cover of the present invention in an open state;

[0023] Figure 3 This is a schematic cross-sectional structural diagram of the main body of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the present invention when viewed from above;

[0025] Figure 5 This is a schematic diagram of the structure of the connecting hinge body of the present invention;

[0026] Figure 6 This is a schematic diagram of the main structure of the shaft-limiting rod hinge of the present invention;

[0027] Figure 7 This is a schematic diagram of the assembly structure of the slide eccentric connecting rod hinge assembly of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the eccentric connecting rod hinge body of the slide groove of the present invention;

[0029] Figure 9 This is a schematic diagram of the eccentric rod structure of the connecting rod type hinge of the present invention;

[0030] Figure 10 It is a schematic diagram of the spherical axis hinge box structure of the present invention.

[0031] In the figure: 1, base; 2, first well seat; 3, second well seat; 4, first reinforcing rib; 5, weight-reducing slide; 6, positioning hole; 7, anti-fall net; 8, spherical shaft hinge box; 9, connecting hinge body; 91, first circular jacket; 92, first duck head plate; 93, mounting groove; 10, shaft limit rod hinge body; 101, second circular jacket; 102, shaft limit slide; 103, second mounting groove; 104, second Duck head plate; 11. Slide eccentric connecting rod type hinge assembly; 111. Movable ring; 112. Eccentric connecting rod; 113. Limit block; 114. Third circular jacket; 115. Third duck head plate; 116. U-shaped limit groove; 117. Movable slide; 12. Limiting structure; 13. Mounting plate; 14. Manhole cover; 15. Second reinforcement rib; 16. First threaded seat; 17. Anti-fall net positioning seat; 18. Second threaded seat. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10A hinged manhole cover comprises a base 1, a hinged manhole cover comprises a base 1, the upper part of the base 1 is fixedly connected to a first manhole seat 2, the outside of the first manhole seat 2 is fixedly connected to a second manhole seat 3, the first manhole seat 2 and the second manhole seat 3 are spliced with each other, that is, the first manhole seat 2 and the second manhole seat 3 cooperate with each other to form a whole manhole cover 14, one side of the first manhole seat 2 and the second manhole seat 3 is fixedly connected to a spherical shaft hinge box 8, the spherical shaft hinge box 8 provides a pair of hinges with up and down movable space, the interior of the spherical shaft hinge box 8 is movably sleeved with a connecting hinge body 9 or an axis limiting rod hinge body 10 or a slide eccentric connecting rod hinge assembly 11 through a limiting structure 12, the connecting hinge body 9, the axis limiting rod hinge The main body 10 and the slide eccentric connecting rod hinge assembly 11 can both drive the manhole cover 14 to move upward and drive the manhole cover 14 to flip 180°, thereby improving the tightness of the equipment when splicing. The limiting structure 12 can be a positioning pin or a wire rope. The top of the connecting hinge body 9, the shaft limiting rod hinge body 10 and the slide eccentric connecting rod hinge assembly 11 are installed with a mounting plate 13. The mounting plate 13 and the connecting hinge body 9, the shaft limiting rod hinge body 10 and the slide eccentric connecting rod hinge assembly 11 are spliced and limited to each other. The side of the mounting plate 13 is fixedly connected to the manhole cover 14, and the inner side of the manhole cover 14 is fixedly connected to a second reinforcing rib 15, which reinforces the manhole cover 14 as a whole.

[0034] See also Figure 5 The connecting hinge body 9 includes a first circular sleeve 91, the upper end of the first circular sleeve 91 is fixedly connected to the mounting groove 92, and the interior of the lower end of the first circular sleeve 91 is provided with a first duck head plate 93, wherein the limiting structure 12 passes through the interior of the first duck head plate 93 and is arranged inside the spherical axis hinge box 8 through the connecting hinge body 9, and is fixed by a positioning pin between the mounting groove 92 and the mounting plate 13. At the same time, a steel wire rope or chain passes through the interior of the first duck head plate 93, and the steel wire rope is fixed on the spherical axis hinge box 8. At the same time, when the manhole cover 14 is opened, the manhole cover 14 is moved upward, and the first circular sleeve 91 is controlled to move upward inside the spherical axis hinge box 8, and the manhole cover 14 is flipped, driving the mounting plate 13 to rotate around the top of the mounting groove 92, so that the mounting plate 13 can be controlled to flip 180°, which makes it more convenient to adjust the flip angle of the manhole cover 14, and in the process of flipping the manhole cover 14, wear between the manhole cover 14 and the first well seat 2 and the second well seat 3 is avoided.

[0035] See also Figure 6The shaft limiting rod hinge body 10 includes a second circular sleeve 101, the lower end of the second circular sleeve 101 is fixedly connected to the shaft limiting rod 102, the second circular sleeve 101 and the shaft limiting rod 102 are provided with a second mounting groove 103 inside, the upper part of the second circular sleeve 101 is fixedly connected to the second duck head plate 104, wherein the second mounting groove 103 is long strip-shaped, the limiting structure 12 passes through the interior of the second mounting groove 103, and is fixed to the side of the spherical shaft hinge box 8 through the shaft limiting rod hinge body 10, and the second duck The head plate 104 and the mounting plate 13 are spliced with each other, and the second circular sleeve 101 and the shaft limiting rod 102 are both confined inside the spherical shaft hinge box 8, that is, the second circular sleeve 101 and the shaft limiting rod 102 can move up and down inside the spherical shaft hinge box 8, and when the equipment is in the closed state, the shaft limiting rod 102 passes through the spherical shaft hinge box 8 and extends to the lower end. At this point, when the inside of the spherical shaft hinge box 8 is replaced with the shaft limiting rod type hinge body 10, it can drive the manhole cover 14 to flip to 180° and reduce wear during flipping.

[0036] See also Figure 7 、 Figure 8 and Figure 9 The sliding groove eccentric connecting rod hinge assembly 11 includes a movable ring 111, the upper part of the movable ring 111 is fixedly connected to an eccentric connecting rod 112, the external fixed connection limit block 113 of the upper end of the movable ring 111, the external sleeve of the upper end of the eccentric connecting rod 112 is connected with a third circular jacket 114, the top of the third circular jacket 114 is fixedly connected to a third duck head plate 115, and a positioning pin is installed between the third duck head plate 115 and the mounting plate 13, and a U-shaped limiting groove 116 is provided inside the lower end of the third circular jacket 114, wherein the eccentric connecting rod 112 drives the limiting block 113 to be arranged inside the U-shaped limiting groove 116, and a groove movable groove 117 is provided inside the side of the third duck head plate 115, and the eccentric connecting rod 112 can extend to the inner part of the groove movable groove 117 The movable ring 111 is controlled to be installed inside the spherical shaft hinge box 8, and the position of the movable shaft block 111 is limited by the limiting structure 12. At the same time, when the manhole cover 14 is controlled to be closed, the third circular sleeve 114 moves downward inside the spherical shaft hinge box 8, and the eccentric connecting rod 112 drives the limiting block 113 to move obliquely to the inside of the movable groove 117. At the same time, when the manhole cover 14 needs to be controlled to open and rotate, the third circular sleeve 114 moves upward, and the eccentric connecting rod 112 moves to a state perpendicular to the horizontal, and the limiting block 113 is clamped in the inside of the U-shaped limiting groove 116, which can ensure that the manhole cover does not separate from the well seat. At the same time, the problem of hidden space of the handle of the manhole cover during the flipping process is solved by cooperating with the spherical hinge box to successfully solve the problem of 180° flipping of the manhole cover.

[0037] See also Figure 1The sides of the first well seat 2 and the second well seat 3 are fixedly connected with the first reinforcing rib 4, and the outside of the base 1 is provided with a positioning groove 5 and a positioning hole 6 in sequence. The inside of the base 1 is provided with an anti-fall net 7, and at the same time, an anti-fall net positioning seat 17 is provided on one side of the anti-fall net 7. A limiting device is installed inside the positioning groove 5 and the positioning hole 6. By providing a weight-reducing groove 5 and a positioning hole 6 on the outside of the base 1, and installing a limited positioning device on the weight-reducing groove 5 and the positioning hole 6, the base 1 can be controlled to be positioned on the foundation, thereby improving the stability of the base 1 when the position is limited.

[0038] See also Figure 1 The spherical shaft hinge box 8 is square and consists of an upper end, a slide groove, a lower end, and a bottom. The upper end of the spherical shaft hinge box 8 is in parallel contact with the upper end of the second well seat 3.

[0039] See also Figure 3 The manhole cover 14 drives the mounting plate 13 to rotate around the upper end of the connecting hinge body 9 or the shaft limiting rod hinge body 10 or the eccentric connecting rod hinge assembly 11 to a maximum angle of 180°, wherein the upper end of the manhole cover 14 remains in the same horizontal plane as the upper end of the first well seat 2, and the mounting plate 13 is driven by the manhole cover 14 to be set at the upper end of the connecting hinge body 9 or the shaft limiting rod hinge body 10 or the eccentric connecting rod hinge assembly 11, and the manhole cover 14 can drive the mounting plate 13 to flip 180°, which can ensure that the manhole cover does not separate from the well seat. At the same time, the problem of hidden space in the handle of the manhole cover during the flipping process is solved by cooperating with the spherical hinge box, and the problem of 180° flipping of the manhole cover is successfully solved.

[0040] See also Figure 2 The inner side of the first well seat 2 is fixedly connected with a first threaded seat 16, and the inner part of the well cover 14 is fixedly connected with a second threaded seat 18 at the position aligned with the first threaded seat 16, wherein the interior of the second threaded seat 18 is installed with a fastening bolt. When the well cover 14 is closed on the upper end of the base 1, the second threaded seat 18 installed inside the well cover 14 can overlap with the first threaded seat 16 and limit each other. At the same time, a fastening bolt is installed inside the second threaded seat 18, that is, the second threaded seat 18 drives the well cover 14 and the base 1 to maintain stability when the position is spliced and limited. When a vehicle is driving on the upper end of the base 1, the well cover 14 is prevented from jumping off the platform, thereby improving the stability of the well cover 14 when the position is limited and avoiding wear of the well cover.

[0041] See also Figure 2The first reinforcing ribs 4 are arranged at equal intervals outside the first well seat 2 and the second well seat 3, and the lower end of the manhole cover 14 is fitted on the upper part of the first well seat 2, and the upper end of the second well seat 3 is in parallel contact with the top of the manhole cover 14. The manhole covers 14 are arranged at equal intervals outside the first well seat 2 and the second well seat 3, and the first reinforcing ribs 4 reinforce the first well seat 2 and the second well seat 3 as a whole. At the same time, the manhole cover 14 is arranged on the upper part of the first well seat 2 to ensure that the manhole cover 14 maintains tightness when it is flipped and fixed.

[0042] See also Figure 3 The connection between the manhole cover 14 and the first well seat 2 and the second well seat 3 is machined, wherein the manhole cover 14 and the first well seat 2 are in a tightly fitted state. The machining process is adopted at the joint between the manhole cover 14 and the first well seat 2 and the second well seat 3 to ensure that the fitting efficiency of the manhole cover 14 and the first well seat 2 and the second well seat 3 is improved during the overlap process, and to avoid wear on the fitting part when the manhole cover 14 is subsequently flipped.

[0043] See also Figure 5 、 Figure 6 and Figure 7 , the connecting hinge body 9, the shaft limiting rod hinge body 10 and the slide eccentric connecting rod hinge assembly 11 are all fitted on the inner wall of the spherical shaft hinge box 8, and the connecting hinge body 9, the shaft limiting rod hinge body 10 and the slide eccentric connecting rod hinge assembly 11 contain the same structure of the mounting groove 92, the second duck head plate 104 and the third duck head plate 115, the mounting groove 92, the second duck head plate 104 and the third duck head plate 115 are all connected to the mounting plate 13 through positioning, the inner side of the mounting groove 92, the second duck head plate 104 and the third duck head plate 115 contains a concave groove, and the mounting plate 13 can extend to the inside of the groove after being flipped over, through The mounting groove 92, the second duck head plate 104 and the third duck head plate 115 are all L-shaped, and the upper ends of the mounting groove 92, the second duck head plate 104 and the third duck head plate 115 are connected to the mounting plate 13. When the manhole cover 14 is flipped over, the manhole cover 14 drives the mounting plate 13 to move to the inside of the groove formed on the inner side of the mounting groove 92, the second duck head plate 104 and the third duck head plate 115. So far, in the process of flipping the manhole cover 14, the groove formed on the inner side of the mounting groove 92, the second duck head plate 104 and the third duck head plate 115 provides space for the flipping of the mounting plate 13, thereby improving the stability of the mounting groove 92, the second duck head plate 104 and the third duck head plate 115 when flipping.

[0044] See also Figure 10A hanging ear is installed at the front end of the spherical axis hinge box 8, and a directional groove is opened inside the spherical axis hinge box 8, and the top of the hanging ear is parallel to the horizontal plane. The front end of the spherical axis hinge box 8 is fixedly connected with a hanging ear, and the control hanging ear is set at the lower end of the manhole cover 14. When the manhole cover 14 is closed, the opening of the manhole seat can be partially closed according to the situation, which prevents the hinge from deviating toward the center of the manhole seat during the closing process of the manhole cover.

[0045] Working principle: When in use, the base 1 is installed on the ground, and a limiting device is installed inside the weight-reducing chute 5 and the positioning hole 6 to improve the position of the base 1 and maintain stability;

[0046] According to the different requirements for installing manhole covers for underground pipelines;

[0047] Method 1: A connecting hinge body 9 is installed inside the spherical shaft hinge box 8, and a steel wire rope or chain is installed inside the first duck head plate 93, and the steel wire rope drives the first circular jacket 91 to be fixed inside the spherical shaft hinge box 8. At the same time, the first circular jacket 91 can move up and down inside the spherical shaft hinge box 8, and is connected to the mounting plate 13 through a fixing pin outside the mounting groove 92. The manhole cover 14 is flipped over and controlled to move to the upper end of the base 1. At the same time, the manhole cover 14 is pressed down, that is, the connecting hinge body 9 moves to the lower end of the spherical shaft hinge box 8, and the manhole cover 14 is fitted and installed inside the first well seat 2 and the second well seat 3, and the second threaded seat 18 and the first threaded seat 16 are overlapped and limited. At the same time, a fastening bolt is installed inside the second threaded seat 18, and the fastening bolt can carry the position of the manhole cover 14 for limitation.

[0048] Method 2: Replace the connecting hinge body 9 with an axis limiting rod type hinge body 10, and the axis limiting rod type hinge body 10 is installed inside the spherical axis hinge box 8, and at the same time, a limiting structure 12 is installed on the side of the spherical axis hinge box 8, and the limiting structure 12 passes through the inside of the second mounting groove 103, that is, the control axis limiting rod 102 can move up and down outside the limiting structure 12, and at the same time, the second duck head plate 104 is connected to the mounting plate 13, and the movement mode is the same as that of method 1, that is, the manhole cover 14 can move upward as a whole inside the first well seat 2 and the second well seat 3, and in the process of moving upward and flipping the manhole cover 14, the problem of 180° flipping of the manhole cover can be successfully solved, and in the process of flipping the manhole cover 14, wear caused by flipping the equipment can be avoided;

[0049] Method 3: By installing a sliding groove eccentric connecting rod hinge assembly 11 inside the spherical shaft hinge box 8, the control movable ring 111 and the limiting structure 12 installed inside the spherical shaft hinge box 8 are spliced and limited to each other, and the eccentric connecting rod 112 passes through the inside of the third duck head plate 115. At the same time, the third duck head plate 115 and the mounting plate 13 are spliced and limited to each other. When the manhole cover 14 is closed, the manhole cover 14 is confined to the inside of the first well seat 2 and the second well seat 3, and the third circular jacket 114 can extend to the spherical shaft hinge box 8, and the eccentric connecting rod 112 passes through the movable groove 117 after being subjected to pressure, and the eccentric connecting rod 112 extends obliquely. At the same time, when the manhole cover needs to be turned over, the manhole cover 14 is moved upward, and the third circular jacket 114 applies pressure to the eccentric connecting rod 112, that is, the eccentric connecting rod 112 and the third duck head plate 115 maintain a vertical state. At the same time, the limit block 113 is clamped in the inside of the U-shaped limit groove 116, thereby improving the stability of the equipment when splicing each other, and avoiding wear of the equipment during the turning process of the manhole cover 14;

[0050] During the process of flipping and closing the manhole cover 14, the manhole cover 14 is confined inside the first well seat 2 and the second well seat 3, and a fastening bolt is installed inside the second threaded seat 18, and the fastening bolt is confined inside the first threaded seat 16. At this point, the manhole cover 14 maintains tightness when confined inside the first well seat 2.

[0051] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A hinged manhole cover, comprising a base (1), wherein the upper portion of the base (1) is fixedly connected to a first manhole seat (2), the outer portion of the first manhole seat (2) is fixedly connected to a second manhole seat (3), and the sides of the first manhole seat (2) and the second manhole seat (3) are fixedly connected to first reinforcing ribs (4), characterized in that: A spherical shaft hinge box (8) is fixedly connected to one side of the first well seat (2) and the second well seat (3), and a connecting hinge body (9) or an axis limiting rod hinge body (10) or a slide eccentric connecting rod hinge assembly (11) is movably sleeved inside the spherical shaft hinge box (8) through a limiting structure (12), wherein the limiting structure (12) can be a positioning pin or a steel wire rope to achieve positioning, and one end of the positioning pin or the steel wire rope is fixed to the spherical shaft hinge box (8). One end is connected to the connecting hinge body (9) or the shaft limiting rod type hinge body (10) or the slide groove eccentric connecting rod type hinge assembly (11), and the top ends of the connecting hinge body (9), the shaft limiting rod type hinge body (10) and the slide groove eccentric connecting rod type hinge assembly (11) are installed with a mounting plate (13), the side of the mounting plate (13) is fixedly connected to the manhole cover (14), and the inner side of the manhole cover (14) is fixedly connected to the second reinforcing rib (15).

2. The hinged manhole cover according to claim 1, characterized in that: The connecting hinge body (9) includes a first circular sleeve (91), the upper end of the first circular sleeve (91) is fixedly connected to a mounting groove (92), and the interior of the lower end of the first circular sleeve (91) is provided with a first duck head plate (93), wherein the limiting structure (12) passes through the interior of the first duck head plate (93).

3. The hinged manhole cover according to claim 1, characterized in that: The shaft limiting rod hinge body (10) includes a second circular sleeve (101), the lower end of the second circular sleeve (101) is fixedly connected to a square shaft limiting rod (102), a second mounting groove (103) is provided inside the second circular sleeve (101) and the shaft limiting rod (102), and the upper part of the second circular sleeve (101) is fixedly connected to a second duck head plate (104), wherein the second mounting groove (103) is in the shape of a long strip, and the limiting structure (12) passes through the interior of the second mounting groove (103).

4. The hinged manhole cover according to claim 1, characterized in that: The sliding groove eccentric connecting rod type hinge assembly (11) includes a movable ring (111), the lower part of the movable ring (111) is connected to the limiting structure (12), the limiting structure can be a positioning pin or a wire rope, the other end of the positioning pin or the wire rope is fixed on the spherical shaft hinge box (8), the upper part of the movable ring (111) is fixedly connected to the eccentric connecting rod (112), the outer part of the upper end of the movable ring (111) is fixedly connected to the limiting block (113), and the outer part of the upper end of the eccentric connecting rod (112) is sleeved with a third circular jacket (114). The top end of the third circular jacket (114) is fixedly connected to the third duck head plate (115), and a positioning pin is installed between the third duck head plate (115) and the mounting plate (13). A U-shaped limiting groove (116) is provided inside the lower end of the third circular jacket (114), wherein the eccentric connecting rod (112) drives the limiting block (113) to be arranged inside the U-shaped limiting groove (116), and a movable groove (117) is provided inside the side surface of the third duck head plate (115), and the eccentric connecting rod (112) can extend to the inside of the movable groove (117).

5. The hinged manhole cover according to claim 1, characterized in that: The outside of the base (1) is provided with a weight-reducing chute (5) and a positioning hole (6) in sequence, and the inside of the base (1) is provided with an anti-falling net (7), and a side of the anti-falling net (7) is provided with an anti-falling net positioning seat (17).

6. The hinged manhole cover according to claim 1, characterized in that: The spherical shaft hinge box (8) is square and consists of an upper end, a slide groove, a lower end, and a bottom. The upper end of the spherical shaft hinge box (8) is in parallel contact with the upper end of the second well seat (3).

7. The hinged manhole cover according to claim 1, characterized in that: The manhole cover (14) drives the mounting plate (13) to rotate around the upper end of the connecting hinge body (9) or the shaft limiting rod hinge body (10) or the eccentric connecting rod hinge assembly (11) at a maximum angle of 180 degrees, wherein the upper end of the manhole cover (14) remains in the same horizontal plane as the upper end of the first manhole seat (2).

8. The hinged manhole cover according to claim 1, characterized in that: A first threaded seat (16) is fixedly connected to the inner side of the first well seat (2), and a second threaded seat (18) is fixedly connected to the inner side of the well cover (14) at a position aligned with the first threaded seat (16), wherein a fastening bolt is installed inside the second threaded seat (18).

9. The hinged manhole cover according to claim 1, characterized in that: The first reinforcing ribs (4) are arranged at equal intervals outside the first well seat (2) and the second well seat (3), and the lower end of the well cover (14) is fitted on the upper part of the first well seat (2), and the upper end of the second well seat (3) is in parallel contact with the top of the well cover (14).

10. The hinged manhole cover according to claim 1, characterized in that: The connection between the manhole cover (14) and the first manhole seat (2) and the second manhole seat (3) is achieved by machining, wherein the manhole cover (14) and the first manhole seat (2) are in a tightly fitted state.

11. The hinged manhole cover according to claim 1, characterized in that: The connecting hinge body (9), the axis limiting rod hinge body (10) and the eccentric sliding groove connecting rod hinge assembly (11) are all fitted on the inner wall of the spherical axis hinge box (8), and the connecting hinge body (9), the axis limiting rod hinge body (10) and the eccentric sliding groove connecting rod hinge assembly (11) contain the same structure of the mounting groove (92), the second duck head plate (104) and the third duck head plate (115). The mounting groove (92), the second duck head plate (104) and the third duck head plate (115) are all connected to the mounting plate (13) through positioning pins. The inner sides of the mounting groove (92), the second duck head plate (104) and the third duck head plate (115) contain a concave groove, and the mounting plate (13) can extend to the inside of the groove after being turned over.

12. The hinged manhole cover according to claim 1, characterized in that: A hanging ear is installed at the front end of the spherical axis hinge box (8), a direction groove is opened inside the spherical axis hinge box (8), and the top end of the hanging ear is parallel to the horizontal plane.

Images