An automated opening device for a manhole cover

Abstract

The application discloses an automatic opening device for a manhole cover, which comprises a fixing frame, a support and a connecting frame for upper support, a supporting leg for oblique support, and a chain for pulling up the manhole cover; further comprising a fixed plate, a baffle and a mounting frame, the fixed plate is fixedly installed below the rear side of the support, the baffle is fixedly installed below the end of the connecting frame, the supporting leg is correspondingly and closely arranged between the baffle, the mounting frame is clamped and placed above the inner side of the fixing frame, a double-shaft motor is installed at the top middle position of the mounting frame, and a connecting block is fixedly installed at the top side of the mounting frame. The automatic opening device for the manhole cover is convenient for automatically pulling up the manhole cover for opening, and is convenient for folding and storing, reduces the occupied space, can adapt to manhole cover opening of different sizes, is favorable for increasing the contact area of the pulling structure and the manhole cover, and avoids deformation of the manhole cover.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of municipal administration, and more particularly to the technical field of opening of inspection well covers used in urban construction underground pipelines, and specifically to an automatic opening device for inspection well covers. BACKGROUND

[0002] During urban construction, underground pipelines are used to build basic settings such as gas pipelines and power pipelines. In order to facilitate post-construction maintenance and repair, an outlet to the ground is provided at intervals on the pipeline. This section from the pipeline to the ground is called an inspection well. An inspection well cover is installed to ensure safety.

[0003] The inspection well cover is generally round and made of steel. It has a certain economic value and is often lost. Although a series of legal regulations have been introduced to greatly improve the loss of inspection well covers, the problem still occasionally occurs. Most inspection well covers are buried under roads due to municipal road construction, or are firmly fixed to the ground due to the accumulation of dust and impurities over a long period of time, making it difficult to disassemble and maintain. Therefore, in order to facilitate the quick disassembly of the inspection well cover, corresponding mechanical equipment is needed for disassembly.

[0004] At present, the opening of the inspection well cover is carried out using a device such as the one disclosed in Chinese Utility Model Patent No. CN 205740241 U, which includes a bracket and a power device. A hook is provided on the bracket, and the hook is fixedly connected to the bracket. An inspection well rod is provided on the hook, and the upper part of the inspection well rod is movably connected to the hook. A limiting rod is provided at the lower end of the inspection well rod, and the limiting rod is movably connected to the inspection well rod. The bracket is placed above the inspection well cover, the limiting rod and the inspection well rod are inserted into the hole of the inspection well cover, the limiting rod is loosened, the inspection well cover is hung on the hook of the bracket, and the power device is started. Under the action of the power device, the inspection well cover can be lifted, which facilitates the efficient opening of the inspection well cover.

[0005] Another example is disclosed in Chinese Patent No. CN 106082051 A, which discloses a device for efficiently opening an inspection well cover. The device includes a bracket, a tackle, a sliding wheel, a connecting rod, and a balance hook. The device is based on the principle of a pulley and a lever and creatively develops a device for efficiently opening an inspection well cover. The device greatly reduces the force required to open the inspection well cover and significantly shortens the opening time, thereby reducing the labor intensity of workers on site and improving work efficiency.

[0006] In combination with the prior art, the current opening method and means of the inspection well cover are mostly manually forced, which is not conducive to the opening of the fixed and firm inspection well cover, and the structure of part of the opening device occupies a large space and is inconvenient for the municipal engineering vehicle to carry, in addition, the contact area between some opening devices and the inspection well cover is small, which will cause the deformation of the inspection well cover when forcibly opening, so that it cannot be used continuously, therefore, an automatic opening device for inspection well cover is proposed to solve the above problems. SUMMARY

[0007] The purpose of the present application is to provide an automatic opening device for inspection well cover to solve the above background art that the current opening device for inspection well cover mostly uses manual force, which is not conducive to the opening of the fixed and firm inspection well cover, and occupies a large space and is inconvenient for the vehicle to carry, in addition, the contact area between some opening devices and the inspection well cover is small, which will cause the deformation of the inspection well cover when forcibly opening, so that it cannot be used continuously.

[0008] To achieve the above purpose, the present application provides the following technical scheme: an automatic opening device for inspection well cover, comprising: a fixing frame for upper support, a support and a connecting frame, and a support leg for oblique support, a chain for pulling up the inspection well cover;

[0009] The support is symmetrically welded and fixed on the left and right sides of the fixing frame, and the connecting frame is slidably connected below the support, and the support leg is rotatably connected below the end of the connecting frame;

[0010] Further comprising:

[0011] The fixed plate is fixedly installed below the rear side of the support, and a groove with a strip structure is formed in the inside of the fixed plate, and a limiting bolt corresponding to the connecting frame is screw-connected in the inside of the groove;

[0012] The baffle is fixedly installed below the end of the connecting frame, and the support leg and the baffle are correspondingly arranged in abutment, and a horizontal plate is vertically arranged at the bottom end of the baffle, and fixed cylinders are symmetrically installed at the bottom of both ends of the horizontal plate, and a rolling ball is embeddedly installed in the inside of the fixed cylinder;

[0013] The mounting frame is clamped and placed above the inside of the fixing frame, a double-shaft motor is installed at the top middle position of the mounting frame, a connecting block is fixedly installed at the top side of the mounting frame, a shaft rod is rotatably connected in the inside of the connecting block, and the end of the shaft rod and the output end of the double-shaft motor are correspondingly fixedly connected;

[0014] The middle side structure of the shaft rod is in an oval structure, the outer side of the shaft rod is slidably connected with a third sliding block, the inside of the third sliding block is symmetrically provided with a fixed slot, and a lock chain is correspondingly inserted and limited in the inside of the fixed slot;

[0015] The top of the intermediate sleeve plate is fixedly installed with a connecting ring, the intermediate sleeve plate is fixedly connected between the connecting ring and the end of the lock chain, and the inside of the intermediate sleeve plate is slidably connected with a fitting rod;

[0016] The bottom of the fixed frame is provided with a hitting motor, the output end of the hitting motor is fixedly installed with a limiting rod, the outer side of the limiting rod is provided with a limiting block, the outer side of the limiting block is clampedly installed with a hitting wheel, and the top end of the limiting rod is threadedly connected with a fastening bolt for limiting installation of the hitting wheel.

[0017] Preferably, the side of the connecting frame is fixedly installed with a first sliding block, the connecting frame and the support correspond to form a clamping sliding structure through the first sliding block, and the middle of the support is provided with a hollow slot for inserting the lock chain.

[0018] Preferably, the rotation angle of the supporting leg ranges from 0 to 120°, the supporting leg is arranged in abutment with the side of the baffle, and the inner side of the baffle is an inclined surface.

[0019] The bottom outer side of the supporting leg is provided with a clamping plate extending outward, the clamping plate and the buckle correspond to be arranged, the buckle is fixedly installed below the connecting frame, and the supporting leg is correspondingly clampedly connected through the clamping plate and the buckle.

[0020] Preferably, the top end of the shaft rod is rotatably connected to the inside of a second sliding block, the outer side of the second sliding block is symmetrically clampedly connected with a guide rail, the guide rail is fixedly installed above the side of the support, and the guide rail and the second sliding block correspond to be slidably connected.

[0021] Preferably, the side of the third sliding block is correspondingly insertedly installed with a plug rod, the outer side of the plug rod is provided with a spring, and the plug rod and the third sliding block form an elastic telescopic structure through the spring.

[0022] The top end of the plug rod correspondingly clamps between the inside of the fixed slot and the lock chain.

[0023] Preferably, the top inside of the intermediate sleeve plate is rotatably installed with an adjusting wheel, the adjusting wheel is correspondingly arranged above the middle of the fitting rod, the middle of the fitting rod is recessed, the middle of the fitting rod is provided with adjusting blocks at equal intervals, and the adjusting wheel and the adjusting blocks correspond to be meshingly connected.

[0024] Preferably, the top of the limiting rod is convexly arranged, and the limiting rod is correspondingly clamped and connected with the limiting block.

[0025] Preferably, the inner side of the beating wheel is provided with an elongated groove structure, and the inner side of the groove structure is provided with clamping blocks at equal intervals.

[0026] The limiting rod is correspondingly eccentrically arranged between the beating wheel, and the top of the beating wheel is extrudedly contacted with the bottom of the mounting frame through the beating groove formed in the middle bottom of the fixing frame.

[0027] Compared with the prior art, the automatic opening device for inspection well covers has the advantages that the inspection well cover can be automatically lifted and raised for opening, and the opening device can be folded and stored to reduce the occupied space, and can be used for opening inspection well covers of different sizes, and the contact area of the lifting structure and the inspection well cover can be increased to avoid deformation of the inspection well cover.

[0028] 1. The bracket, connecting frame, leg, fixing cylinder and clamping plate are arranged in the scheme, the sliding connection between the bracket and the connecting frame is fixed by the limiting bolt, the unfolded position of the leg can be adjusted to increase the arm span, the leg is unfolded by rotation, vertical support is facilitated, the bottom of the leg is symmetrically provided with the fixing cylinder and the rolling ball, direct movement for use is facilitated, the leg is clamped and fixed between the clamping plate and the buckle, stable storage is facilitated, and space occupation is reduced.

[0029] 2. The shaft, third sliding block, chain, intermediate sleeve plate and fitting rod are arranged in the scheme, the fitting rod can be telescopically slid in the intermediate sleeve plate, one end of the fitting rod is inserted into the reserved opening of the inspection well cover first, the other end of the fitting rod is completely inserted into the reserved opening, the fitting rod is slid in the intermediate sleeve plate by rotating the adjusting wheel, the fitting rod contacts the two sides of the reserved opening, the contact area is increased, and deformation of the inspection well cover is avoided when the chain is wound by the shaft.

[0030] 3. The mounting frame, double-shaft motor, second sliding block and beating wheel are arranged in the scheme, the shaft is rotated by the double-shaft motor, the chain is wound to facilitate storage and lifting of the inspection well cover, the beating wheel is eccentrically installed with the output shaft of the beating motor, the mounting frame is lifted by rotation of the beating wheel, the double-shaft motor, the shaft and the second sliding block are integrally slid upward by the mounting frame, lifting is facilitated, and opening use is ensured.

[0031] 4. The scheme is provided with a limiting rod, a limiting block and a clamping block, the installation of the limiting block is carried out through the clamping between the limiting block and the limiting rod, and the limiting block is clamped and connected between the clamping block and the beating wheel, so that the eccentric installation distance of the beating wheel is adjusted, and the beating wheel is fixed through the fastening bolt, so that the installation frame is lifted to different degrees through the beating wheel, and the jamming and the breakage of the chain are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a front structure schematic diagram of the present application;

[0033] Figure 2 It is a front structure schematic diagram of the present application;

[0034] Figure 3 It is a front structure schematic diagram of the present application;

[0035] Figure 4 It is a front structure schematic diagram of the present application;

[0036] Figure 5 It is a front structure schematic diagram of the present application;

[0037] Figure 6 It is a front structure schematic diagram of the present application;

[0038] Figure 7 It is a front structure schematic diagram of the present application;

[0039] In the figure: 1, fixed frame; 2, support; 3, connecting frame; 4, first sliding block; 5, fixed plate; 6, limiting bolt; 7, support leg; 8, baffle; 9, horizontal plate; 10, fixed cylinder; 11, rolling ball; 12, clamping plate; 13, buckle; 14, installation frame; 15, double-shaft motor; 16, connecting block; 17, shaft rod; 18, second sliding block; 19, guide rail; 20, third sliding block; 21, fixed groove; 22, chain; 23, insertion rod; 24, spring; 25, hollow groove; 26, intermediate sleeve plate; 27, connecting ring; 28, adjusting wheel; 29, fitting rod; 30, adjusting block; 31, beating motor; 32, limiting rod; 33, limiting block; 34, beating wheel; 35, clamping block; 36, fastening bolt; 37, beating groove. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] Please refer toFigures 1-7 The application provides a technical scheme: an opening device for an automatic inspection well cover, comprising:

[0042] 1, fixed frame 1, support 2, connecting frame 3 and support leg 7

[0043] Among them, the fixed frame 1, the support 2 and the connecting frame 3 are used for upper support, the support leg 7 is used for inclined support, the support 2 is symmetrically welded and fixed on the left and right sides of the fixed frame 1, the connecting frame 3 is slidably connected below the support 2, and the support leg 7 is rotatably connected below the end of the connecting frame 3;

[0044] The rear lower side of the support 2 is fixedly provided with a fixed plate 5, a groove in strip structure is formed in the inner portion of the fixed plate 5, a limiting bolt 6 corresponding to the connecting frame 3 is arranged in the groove, a baffle 8 is fixedly arranged below the end of the connecting frame 3, the support leg 7 is correspondingly arranged in abutment with the baffle 8, a horizontal plate 9 is vertically arranged at the bottom end of the baffle 8, fixed cylinders 10 are symmetrically arranged at the bottom of both ends of the horizontal plate 9, and rolling balls 11 are embedded and arranged in the inner portions of the fixed cylinders 10;

[0045] The first sliding block 4 is fixedly arranged on the side upper portion of the connecting frame 3, the connecting frame 3 and the support 2 correspondingly form a clamping sliding structure through the first sliding block 4, the middle portion of the support 2 is provided with a hollow slot 25 in which a chain 22 is inserted, the rotation angle range of the support leg 7 is 0-120°, the side surface of the baffle 8 is arranged in abutment with the support leg 7, the inner side surface of the baffle 8 is an inclined surface, the outer side of the bottom portion of the support leg 7 is outwardly extended and provided with a clamping plate 12, the clamping plate 12 and a buckle 13 are correspondingly arranged, the buckle 13 is fixedly arranged below the connecting frame 3, and the support leg 7 is correspondingly clamped and connected through the clamping plate 12 and the buckle 13;

[0046] In specific application scenarios, such as Figure 1 , Figure 4 and Figure 5 , the sliding structure between the support 2 and the connecting frame 3 facilitates extension of the connecting frame 3, the connecting frame 3 is clamped and slid between the first sliding block 4 and the support 2, relative limiting is facilitated, the through hole arranged on the back of the connecting frame 3 is threadedly connected with the limiting bolt 6, the limiting bolt 6 is rotated, the limiting bolt 6 is pressed to tightly fix the connecting frame 3 and the fixed plate 5, the limiting bolt 6 is slidably connected to the inner side of the fixed plate 5, and the top end of the support leg 7 is adjusted and used;

[0047] Meanwhile, as shown in Figure 1 , Figure 3 and Figure 4 , the sliding structure between the support 2 and the connecting frame 3 facilitates extension of the connecting frame 3, the connecting frame 3 is clamped and slid between the first sliding block 4 and the support 2, relative limiting is facilitated, the through hole arranged on the back of the connecting frame 3 is threadedly connected with the limiting bolt 6, the limiting bolt 6 is rotated, the limiting bolt 6 is pressed to tightly fix the connecting frame 3 and the fixed plate 5, the limiting bolt 6 is slidably connected to the inner side of the fixed plate 5, and the top end of the support leg 7 is adjusted and used;The middle part of the supporting leg 7 is symmetrically provided with a clamping plate 12 which is correspondingly clamped with a buckle 13 extending downward from the bottom of the connecting frame 3, so that the position between the supporting leg 7 and the connecting frame 3 is limited. During use, the buckle 13 is separated from the clamping plate 12, so that the supporting leg 7 is rotated to the maximum angle and is in close contact with the inner side of the baffle 8, thereby preventing the supporting leg 7 from being blocked by the baffle 8, ensuring the stable standing of the supporting leg 7. The supporting leg 7 is obliquely arranged outward, which can ensure stable support during use. The bottom of the supporting leg 7 is transversely fixed with a horizontal plate 9, and the rolling ball 11 is embedded in the fixed cylinder 10 fixed at the bottom of the horizontal plate 9. The rolling structure of the rolling ball 11 in the fixed cylinder 10 can ensure the movement of the whole device, making it easy to store and move.

[0048] 2, mounting frame 14, shaft 17, third sliding block 20, chain 22 and intermediate sleeve plate 26

[0049] The mounting frame 14 is placed on the inner side of the fixed frame 1, and the double-shaft motor 15 is installed at the top middle position of the mounting frame 14. The connecting block 16 is fixedly installed at the top side of the mounting frame 14, and the shaft 17 is rotatably connected in the connecting block 16. The output end of the double-shaft motor 15 is correspondingly fixedly connected with the end of the shaft 17.

[0050] The top end of the shaft 17 is rotatably connected to the inner side of the second sliding block 18. The outer side of the second sliding block 18 is symmetrically clamped and connected with the guide rail 19. The guide rail 19 is fixedly installed above the side of the support 2, and the guide rail 19 is correspondingly slidably connected with the second sliding block 18.

[0051] The middle side of the shaft 17 is in an elliptical structure. The outer side of the shaft 17 is slidably connected with the third sliding block 20. The inner side of the third sliding block 20 is symmetrically provided with a fixed groove 21. The inner side of the fixed groove 21 is correspondingly inserted and limited with the chain 22. The side of the third sliding block 20 is correspondingly inserted and installed with the insertion rod 23. The outer side of the insertion rod 23 is sleeved with the spring 24. The insertion rod 23 constitutes an elastic telescopic structure on the outer side of the third sliding block 20 through the spring 24. The top end of the insertion rod 23 is correspondingly clamped between the inner side of the fixed groove 21 and the chain 22.

[0052] The top of the intermediate sleeve plate 26 is fixedly installed with the connecting ring 27. The intermediate sleeve plate 26 is fixedly connected between the connecting ring 27 and the end of the chain 22. The inner side of the intermediate sleeve plate 26 is slidably connected with the abutting rod 29. The top inner side of the intermediate sleeve plate 26 is rotatably installed with the adjusting wheel 28. The adjusting wheel 28 is correspondingly arranged above the middle part of the abutting rod 29. The middle part of the abutting rod 29 is recessed. The middle part of the abutting rod 29 is equidistantly provided with the adjusting block 30. The adjusting wheel 28 is correspondingly meshingly connected with the adjusting block 30.

[0053] In specific application scenarios, such as Figure 1、 Figure 2 、 Figure 5 and Figure 6 In the working use, the shaft rod 17 is driven to rotate by the double-shaft motor 15, so as to wind and release the chain 22 through the shaft rod 17. The outer side of the shaft rod 17 is slidably provided with the third sliding block 20, so that the third sliding block 20 can slide on the outer side of the shaft rod 17 to be opposite to the top of the manhole cover reserved opening. The chain 22 is connected to the inner side of the third sliding block 20. The chain 22 is limited in the inner side of the fixed groove 21 through the plug rod 23 which is telescopically arranged in the third sliding block 20. The fitting rod 29 is pushed in the inner side of the intermediate sleeve plate 26, so that one end of the fitting rod 29 moves close to the intermediate sleeve plate 26. The other end of the fitting rod 29 is inserted into the lower side of the manhole cover through the manhole cover reserved opening. After the fitting rod 29 is completely inserted, the adjusting wheel 28 arranged on the top of the intermediate sleeve plate 26 is rotated. The adjusting wheel 28 is engaged with the adjusting block 30 in the inner side of the fitting rod 29, so as to drive the fitting rod 29 to slide in the inner side of the intermediate sleeve plate 26. The middle part of the fitting rod 29 slides to the position of the intermediate sleeve plate 26. The adjusting wheel 28 is connected to the intermediate sleeve plate 26 through the damping bearing, so as to be limited. Then, the chain 22 is pulled up, so that the chain 22 is fixed between the third sliding block 20 after being pulled tight. At this time, the shaft rod 17 can be driven to rotate by the double-shaft motor 15, so as to wind the chain 22 to pull up the manhole cover. The fitting rod 29 is fitted with the bottom surface of the manhole cover, so as to increase the contact area and avoid the deformation of the manhole cover.

[0054] 3, the hitting motor 31, the limiting rod 32 and the hitting wheel 34

[0055] The bottom of the fixed frame 1 is provided with the hitting motor 31. The output end of the hitting motor 31 is fixedly provided with the limiting rod 32. The outer side of the limiting rod 32 is provided with the limiting block 33. The outer side of the limiting block 33 is clamped and arranged with the hitting wheel 34. The top end of the limiting rod 32 is threadedly connected with the fastening bolt 36 to limit and arrange the hitting wheel 34.

[0056] The top of the limiting rod 32 is protrudingly arranged. The limiting rod 32 is correspondingly and limitingly clamped and connected with the limiting block 33. The outer side of the limiting block 33 is symmetrically and outwardly extendedly arranged with the tooth plate.

[0057] The inner side of the hitting wheel 34 is provided with the long strip-shaped groove structure. The inner side of the groove structure is correspondingly and clampingly connected with the limiting block 33.

[0058] The limiting rod 32 and the hitting wheel 34 are correspondingly and eccentrically arranged. The top of the hitting wheel 34 is extrudedly contacted with the bottom of the mounting frame 14 through the hitting groove 37 arranged in the middle bottom of the fixed frame 1.

[0059] In the specific application scene, such as Figure 3 ,Figure 5 And Figure 7 The middle limiting rod 32 is in corresponding clamping connection with the limiting block 33, and the relative position between the beating wheel 34 and the limiting rod 32 can be adjusted through the corresponding clamping between the limiting block 33 and the clamping block 35, and the eccentric distance of the 43 and the limiting rod 32 is adjusted through the connection of the fastening bolt 36, and the eccentric rotation of the beating wheel 34 is driven by the beating motor 31.

[0060] Embodiment:

[0061] When the manhole cover opening device is used to open the manhole cover, first of all, the device is carried to the work site by the engineering vehicle, and after the device is taken off, the supporting leg 7 is rotated at the end of the connecting frame 3, the corresponding disengagement clamping between the clamping plate 12 and the clamping buckle 13 is performed at the same time, and the supporting leg 7 is rotated downward to stand, so that the supporting leg 7 is in contact between the bottom of the supporting leg 7 and the ground, and the outer side of the bottom surface of the connecting frame 3 is provided with the baffle 8, so that the supporting leg 7 is limited between the baffle 8 to ensure the supporting use, and the device is moved above the manhole cover through the rolling ball 11 arranged at the bottom of the supporting leg 7;

[0062] After moving, the connecting frame 3 is slid on the inner side of the support 2 through the first sliding block 4, so that the bottom end of the supporting leg 7 moves to the outer side of the manhole cover, so as to avoid downward pressure on the manhole cover when the manhole cover is pulled up, and after moving, the limiting bolt 6 is screwed between the connecting frame 3 to extrude the fixed plate 5, so that the connecting frame 3 is relatively fixed with the support 2;

[0063] Then the end of the fitting rod 29 is moved inside the middle sleeve plate 26 to be close to the middle sleeve plate 26, and the top end of the fitting rod 29 is inserted into the reserved port of the manhole cover. When the fitting rod 29 is completely immersed in the reserved port, the adjusting wheel 28 is rotated to drive the fitting rod 29 to slide on the side of the middle sleeve plate 26 through the engagement between the adjusting wheel 28 and the adjusting block 30, so that the middle part of the fitting rod 29 corresponds to the middle sleeve plate 26 and the reserved port, and the two sides of the fitting rod 29 are in contact with the two sides of the reserved port after being pulled up, so as to increase the contact area;

[0064] Then the lock chain 22 is pulled to make the top end of the lock chain 22 pass through the fixed groove 21 opened in the third sliding block 20, and the lock chain 22 is limited and fixed between the third sliding block 20 through the elastic structure of the inserting rod 23, and at the same time, the third sliding block 20 is correspondingly slid on the shaft rod 17, so that the shaft rod 17 corresponds to the reserved port up and down, so as to avoid the sliding of the third sliding block 20 caused by the winding of the lock chain 22, which causes damage and wear of the parts;

[0065] When working, the shaft rod 17 is driven to rotate by the double-shaft motor 15, so as to wind the chain 22, and the manhole cover is pulled up through the chain 22 and the fitting rod 29; when the manhole cover cannot be pulled up, the beating motor 31 is started, so that the beating motor 31 drives the beating wheel 34 to eccentrically rotate through the limiting rod 32, and the beating wheel 34 beats the bottom of the mounting frame 14 when rotating, so as to vibrate and lift up, and facilitate the opening of the manhole cover;

[0066] Wherein, the beating wheel 34 is installed through the clamping between the clamping block 35 and the limiting block 33, the limiting block 33 is clamped outside the limiting rod 32, so that the eccentric installation distance between the beating wheel 34 and the limiting rod 32 can be adjusted, and the limiting block 33 and the beating wheel 34 are limited through the connection between the fastening bolt 36 and the limiting rod 32, so as to adjust the beating arm, avoid jamming, and avoid the chain 22 from being broken.

[0067] The contents not described in detail in the specification belong to the prior art known by the person skilled in the art, and the orientation terms such as up, down, left, right, front, back and the like in the specification only represent relative positions and not absolute positions.

[0068] The standard parts used in the application can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the mechanical parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.

[0069] Although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. An automated opening device for a manhole cover, comprising: The fixed frame (1), support (2) and connecting frame (3) for upper support, and the supporting leg (7) for oblique support, the chain (22) for pulling the manhole cover upward; The support (2) is symmetrically welded and fixed on the left and right sides of the fixed frame (1), and the connecting frame (3) is slidably connected below the support (2). Further comprising: The fixed plate (5) is fixedly installed below the rear side of the support (2), and the recess with a strip structure is formed in the inside of the fixed plate (5), and the limiting pin (6) is installed in the recess and is in threaded connection with the connecting frame (3); The baffle (8) is fixedly installed below the end of the connecting frame (3), and the supporting leg (7) is correspondingly arranged in abutment with the baffle (8), and the horizontal plate (9) is vertically arranged at the bottom end of the baffle (8), and the fixed cylinder (10) is symmetrically installed at the bottom of both ends of the horizontal plate (9), and the rolling ball (11) is embeddedly installed in the inside of the fixed cylinder (10); The mounting frame (14) is clamped and placed above the inside of the fixed frame (1), the double-shaft motor (15) is installed at the top middle position of the mounting frame (14), the connecting block (16) is fixedly installed at the top side of the mounting frame (14), the shaft rod (17) is rotatably connected in the inside of the connecting block (16), and the output end of the double-shaft motor (15) is correspondingly fixedly connected with the end of the shaft rod (17); The middle side surface structure of the shaft rod (17) is in an elliptical structure, the third sliding block (20) is slidably connected to the outside of the shaft rod (17), the fixed groove (21) is symmetrically formed in the inside of the third sliding block (20), and the chain (22) is correspondingly inserted and limited in the inside of the fixed groove (21); The intermediate sleeve plate (26) is fixedly installed at the top of the intermediate sleeve plate (26), the intermediate sleeve plate (26) is fixedly connected with the end of the chain (22) through the connecting ring (27), and the abutment rod (29) is slidably connected in the inside of the intermediate sleeve plate (26); The fixed frame (1) is installed with the beating motor (31) at the bottom, the output end of the beating motor (31) is fixedly installed with the limiting rod (32), the limiting rod (32) is sleeved with the limiting block (33) on the outside, the limiting block (33) is clamped and installed with the beating wheel (34) on the outside, and the limiting rod (32) is threadedly connected with the fastening pin (36) at the top end to limit and install the beating wheel (34).

2. An automatic opening device for a manhole cover according to claim 1, characterized in that: The first sliding block (4) is fixedly installed above the side of the connecting frame (3), the connecting frame (3) and the support (2) correspondingly constitute a clamping and sliding structure through the first sliding block (4), and the middle part of the support (2) is provided with the air slot (25) for inserting the chain (22).

3. The automatic opening device for a manhole cover according to claim 1, characterized in that: The rotating angle range of the leg (7) is 0-120°, the leg (7) is attached to the side of the baffle (8), and the inner side of the baffle (8) is an inclined surface; The bottom outer side of the leg (7) is provided with a clamping plate (12) extending outward, the clamping plate (12) and the buckle (13) are correspondingly arranged, the buckle (13) is fixedly installed below the connecting frame (3), and the leg (7) is correspondingly clamped and connected between the clamping plate (12) and the buckle (13).

4. The automatic opening device for a manhole cover according to claim 1, characterized in that: The top end of the shaft (17) is rotatably connected to the inner side of the second sliding block (18), the outer side of the second sliding block (18) is symmetrically clamped and connected with the guide rail (19), the guide rail (19) is fixedly installed above the side of the support (2), and the guide rail (19) and the second sliding block (18) are correspondingly connected.

5. The automatic opening device for a manhole cover according to claim 1, characterized in that: The side of the third sliding block (20) is correspondingly inserted and mounted with the insertion rod (23), the outer side of the insertion rod (23) is sleeved with the spring (24), and the insertion rod (23) constitutes an elastic telescopic structure on the outer side of the third sliding block (20) through the spring (24). The top end of the insertion rod (23) is correspondingly clamped between the inner side of the fixed groove (21) and the lock chain (22).

6. An automatic opening device for a manhole cover according to claim 1, characterized in that: The top inner side of the intermediate sleeve plate (26) is rotatably installed with an adjusting wheel (28), the adjusting wheel (28) is correspondingly arranged above the middle part of the fitting rod (29), the middle part of the fitting rod (29) is recessed, and the middle part of the fitting rod (29) is provided with adjusting blocks (30) at equal intervals, and the adjusting wheel (28) and the adjusting block (30) are correspondingly engaged.

7. The automatic opening device for a manhole cover according to claim 1, characterized in that: The top of the limiting rod (32) is protruding, the limiting rod (32) and the limiting block (33) are correspondingly limited and clamped, and the outer side of the limiting block (33) is symmetrically provided with a tooth plate extending outward.

8. An automatic opening device for a manhole cover according to claim 7, characterized in that: The inner side of the hitting wheel (34) is provided with a long slot structure, the inside of the slot structure is provided with clamping blocks (35) at equal intervals, and the limiting block (33) and the clamping block (35) are correspondingly clamped. The limiting rod (32) and the hitting wheel (34) are correspondingly eccentrically arranged, and the top of the hitting wheel (34) is extruded with the bottom of the mounting frame (14) through the hitting slot (37) formed in the middle bottom of the fixed frame (1).

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