A device for opening a heavy hammer manhole cover

Abstract

The present invention provides a device for opening a heavy hammer manhole cover, belonging to the technical field of manual manhole covers; the device for opening a heavy hammer manhole cover is installed on a base body, the base body includes a side wall and a top wall, and an escape opening is provided on the top wall. The device for opening a heavy hammer manhole cover includes: a lower hinge seat, a rotating rod, a heavy hammer, a housing, a fixing plate, a first spring, a moving component, a second spring, a cover plate, a bracket, a first guide pulley and a first steel wire rope; by using the lever principle and the elastic force when the first spring and the second spring are reset, the opening and closing of the cover plate can be realized, which can not only reduce the force required to open the cover plate, thereby improving the efficiency of opening the cover plate, but also realize the closing of the cover plate without applying external force, so as to improve the user experience of the product.

Description

Technical Field

[0001] The present invention belongs to the technical field of manhole covers, and particularly relates to a heavy hammer manhole cover opening device. Background Art

[0002] In the related art, the escape opening is closed by a manhole cover. In order to reduce the difficulty of opening the manhole cover, a heavy hammer is usually used to balance the gravity of the manhole cover, so that the force required to open the manhole cover can be reduced.

[0003] Since the self-weights of the heavy hammer and the manhole cover are relatively large, in order to break the balance between the heavy hammer and the manhole cover, a relatively large force is still required, thus reducing the efficiency of opening the manhole cover; at the same time, when closing the manhole cover, an external force still needs to be applied to the manhole cover, thereby reducing the user experience of the product. Summary of the Invention

[0004] In order to solve the problems in the above-mentioned prior art that due to the relatively large self-weights of the heavy hammer and the manhole cover, a relatively large force is still required to break the balance between the heavy hammer and the manhole cover, thus reducing the efficiency of opening the manhole cover; at the same time, when closing the manhole cover, an external force still needs to be applied to the manhole cover, thereby reducing the user experience of the product, the present invention provides a heavy hammer manhole cover opening device. By using the lever principle and the elastic force when the first spring and the second spring are reset, the opening and closing of the cover plate are realized. It can not only reduce the force required to open the cover plate, thereby improving the efficiency of opening the cover plate, but also realize closing the cover plate without applying an external force, so as to improve the user experience of the product. The specific technical solution is as follows:

[0005] A heavy hammer manhole cover opening device, the heavy hammer manhole cover opening device is installed on a base body. The base body includes a side wall and a top wall. The top wall is provided with an escape opening. The heavy hammer manhole cover opening device includes: a lower hinge seat, a rotating rod, a heavy hammer, a housing, a fixing plate, a first spring, a moving component, a second spring, a cover plate, a bracket, a first guide pulley and a first steel wire rope; the lower hinge seat is fixed on the side wall; one end of the rotating rod is rotatably connected to the lower hinge seat; the heavy hammer is connected to the other end of the rotating rod; the housing is a hollow cavity, and the housing is fixed on the side wall of the rotating rod; two fixing plates are embedded in the housing, and the two fixing plates are connected to the two ends of the housing; the first spring is embedded in the housing, and one end of the first spring is connected to one fixing plate; the moving component is slidably connected in the housing, and one end of the moving component is connected to the other end of the first spring; the second spring is embedded in the housing, one end of the second spring is connected to the other fixing plate, and the second spring is connected to the other end of the moving component; the cover plate is buckled at the escape opening; the bracket is fixed at the bottom of the cover plate; the first guide pulley is fixed at the bottom of the top wall; one end of the first steel wire rope is connected to the bracket, the first steel wire rope is wound around the outside of the first guide pulley, and the first steel wire rope is connected to the moving component.

[0006] In addition, the counterweight manhole cover opening device in the above technical solution provided by the present invention may further have the following additional technical features:

[0007] In the above technical solution, the moving component includes: a rack, a moving shaft, and a bushing; the rack is slidably connected in the housing, and the rack is connected to the other end of the first spring; the moving shaft is embedded in the housing, and the moving shaft is connected to the rack; the bushing is sleeved outside the moving shaft, and the bushing is connected to the first steel wire rope; wherein, the second spring is sleeved outside the moving shaft, and the second spring is in contact with the bushing.

[0008] In the above technical solution, the counterweight manhole cover opening device further includes: a motor and a gear; the motor is provided with an output shaft, the motor is fixed on the side wall of the housing, and the output shaft of the motor passes through the housing; the gear is sleeved outside the output shaft of the motor, and the gear meshes with the rack.

[0009] In the above technical solution, the counterweight manhole cover opening device further includes: a first guide pulley, a second steel wire rope, a second guide pulley, and a third steel wire rope; the first guide pulley is rotatably connected to the side wall of the rotating rod; one end of the second steel wire rope is connected to the bushing, the second steel wire rope passes through the housing, the second steel wire rope is wound around the outside of the first guide pulley, and the other end of the second steel wire rope is located below the cover plate; the second guide pulley is rotatably connected to the side wall of the rotating rod, and the second guide pulley is located above the first guide pulley; one end of the third steel wire rope is connected to the bushing, the third steel wire rope passes through the housing, the third steel wire rope is wound around the outside of the second guide pulley, the third steel wire rope passes through the top wall, and the other end of the third steel wire rope is located above the cover plate.

[0010] In the above technical solution, the counterweight manhole cover opening device further includes: a first guide pulley, a second steel wire rope, a second guide pulley, and a third steel wire rope; the first guide pulley is rotatably connected to the side wall of the rotating rod; one end of the second steel wire rope is connected to the bushing, the second steel wire rope passes through the housing, the second steel wire rope is wound around the outside of the first guide pulley, and the other end of the second steel wire rope is located below the cover plate; the second guide pulley is rotatably connected to the side wall of the rotating rod, and the second guide pulley is located above the first guide pulley; one end of the third steel wire rope is connected to the bushing, the third steel wire rope passes through the housing, the third steel wire rope is wound around the outside of the second guide pulley, the third steel wire rope passes through the top wall, and the other end of the third steel wire rope is located above the cover plate.

[0011] In the above technical solution, the counterweight manhole cover opening device further includes: a first connecting ring and a second connecting ring; the first connecting ring is connected to the outer wall of the bushing, and the first connecting ring is connected to the first steel wire rope; the second connecting ring is connected to the outer wall of the bushing, and the second connecting ring is connected to the second steel wire rope and the third steel wire rope.

[0012] In the above technical solution, the heavy hammer manhole cover opening device further includes: a first operation box, a first wire spool, a first ratchet, a first handle, and a first pawl; the first operation box is installed on the side wall; the first wire spool is rotatably connected to the first operation box, and the second steel wire rope is wound around the outside of the first wire spool; the first ratchet is sleeved on the outside of the first wire spool; the first handle is sleeved on the outside of the first wire spool, and the first handle is located on one side of the first ratchet; the first pawl is rotatably connected to the first operation box, and the first pawl is embedded in the tooth groove of the first ratchet.

[0013] In the above technical solution, the heavy hammer manhole cover opening device further includes: a second operation box, a second wire spool, a second ratchet, a second handle, and a second pawl; the second operation box is installed on the top wall; the second wire spool is rotatably connected to the second operation box, and the third steel wire rope is wound around the outside of the second wire spool; the second ratchet is sleeved on the outside of the second wire spool; the second handle is sleeved on the outside of the second wire spool, and the second handle is located on one side of the second ratchet; the second pawl is rotatably connected to the second operation box, and the second pawl is embedded in the tooth groove of the second ratchet.

[0014] In the above technical solution, the heavy hammer manhole cover opening device further includes: a card slot, a connecting shaft, a lock catch, a torsion spring, a third guide pulley, a fourth steel wire rope, and a fifth steel wire rope; the card slot is triangular, and the card slot is arranged at the bottom of the rack; the connecting shaft is connected to the rotating rod; the lock catch is triangular, the lock catch is sleeved on the outside of the connecting shaft, and the lock catch is rotatably connected to the connecting shaft; the torsion spring is sleeved on the outside of the connecting shaft, one end of the torsion spring is connected to the connecting shaft, and the other end of the torsion spring is connected to the lock catch; the third guide pulley is rotatably connected to the side wall, and the third guide pulley is located below the lock catch; one end of the fourth steel wire rope is connected to the lock catch, the fourth steel wire rope is wound around the outside of the third guide pulley, and the other end of the fourth steel wire rope is located below the cover plate; one end of the fifth steel wire rope is connected to the lock catch, the fifth steel wire rope is wound around the outside of the third guide pulley, the fifth steel wire rope passes through the top wall, and the other end of the fifth steel wire rope is located above the cover plate.

[0015] In the above technical solution, the heavy hammer manhole cover opening device further includes: a first support pulley, a second guide pulley, a second support pulley, and a third guide pulley; the support pulley is fixed on the top wall; the second guide pulley is fixed on the top wall, and the second guide pulley is located on one side of the support pulley; the support pulley is fixed on the top wall; the second guide pulley is fixed on the top wall; wherein, the first steel wire rope is respectively wound around the outside of the first support pulley and the second guide pulley, and the third steel wire rope and the fifth steel wire rope are respectively wound around the outside of the second support pulley and the third guide pulley.

[0016] In the above technical solution, the heavy hammer manhole cover opening device further includes: a relief groove; the relief groove is strip-shaped, the relief groove is arranged on the housing, and the first steel wire rope passes through the relief groove.

[0017] A kind of heavy hammer manhole cover opening device of the present invention has the following beneficial effects compared with the prior art:

[0018] 1. By utilizing the lever principle and the elastic force when the first spring and the second spring reset, the opening and closing of the cover plate can be realized. This can not only reduce the force required to open the cover plate, thereby improving the efficiency of opening the cover plate, but also realize the closing of the cover plate without applying external force, so as to improve the user experience of the product.

[0019] 2. By embedding the moving shaft into the shell and connecting the moving shaft with the rack, the synchronous movement of the rack and the moving shaft can be realized; by sleeving the shaft sleeve around the outside of the moving shaft and connecting the shaft sleeve with the first steel wire rope, the synchronous movement of the shaft sleeve and the moving shaft can be realized, so as to realize that the moving shaft pulls the first steel wire rope through the shaft sleeve. By sleeving the second spring on the outside of the moving shaft and making the second spring fit with the shaft sleeve, the moving shaft can compress the second spring through the shaft sleeve.

[0020] 3. The motor and the gear drive the rack to move, so as to reduce the distance between the moving shaft and the lower hinge seat, thereby driving the cover plate to open by using the lever principle, and further realizing the electric opening of the cover plate.

[0021] 4. By rotatably connecting the first guide wheel with the side wall of the rotating rod, connecting one end of the second steel wire rope with the shaft sleeve, passing the second steel wire rope through the shell, winding the second steel wire rope around the outside of the first guide wheel, and making the other end of the second steel wire rope be located below the cover plate, the first guide wheel can support the second steel wire rope, so that the worker can manually open the cover plate by pulling the second steel wire rope below the cover plate.

[0022] 5. The staff drives the shaft sleeve and the moving shaft to move by pulling the second steel wire rope or the third steel wire rope, thereby driving the cover plate to open by using the lever principle, and further realizing that the cover plate can be manually opened whether the staff is above or below the cover plate, so as to improve the user experience of the product.

[0023] 6. By connecting the first connecting ring with the outer wall of the shaft sleeve and connecting the first connecting ring with the first steel wire rope, the firmness of the connection between the first steel wire rope and the shaft sleeve can be improved, so as to improve the user experience of the product. By connecting the second connecting ring with the outer wall of the shaft sleeve and connecting the second connecting ring with the second steel wire rope and the third steel wire rope, the firmness of the connection between the second steel wire rope and the third steel wire rope and the shaft sleeve can be improved, so as to improve the user experience of the product.

[0024] 7. By rotatably connecting the first pawl to the first operating box and embedding the first pawl into the tooth groove of the first ratchet wheel, when the first ratchet wheel rotates clockwise, the first pawl slides along the circumferential direction of the first ratchet wheel. When the first ratchet wheel is about to rotate counterclockwise, since the first pawl is embedded in the tooth groove of the first ratchet wheel, the first ratchet wheel can be locked, thereby realizing self-locking of the first ratchet wheel to avoid the reset of the moving shaft, thus ensuring the normal use of the product.

[0025] 8. By rotatably connecting the second pawl to the second operating box and embedding the second pawl into the tooth groove of the second ratchet wheel, when the second ratchet wheel rotates clockwise, the second pawl slides along the circumferential direction of the second ratchet wheel. When the second ratchet wheel is about to rotate counterclockwise, since the second pawl is embedded in the tooth groove of the second ratchet wheel, the second ratchet wheel can be locked, thereby realizing self-locking of the second ratchet wheel to avoid the reset of the moving shaft, thus ensuring the normal use of the product.

[0026] 9. By fixing the first support pulley and the second guide pulley on the top wall and winding the first steel wire rope around the outside of the first support pulley and the second guide pulley respectively, the first support pulley and the second guide pulley support and guide the first steel wire rope. By fixing the second support pulley and the third guide pulley on the top wall and winding the third steel wire rope and the fifth steel wire rope around the outside of the second support pulley and the third guide pulley respectively, the second support pulley and the third guide pulley support and guide the third steel wire rope and the fifth steel wire rope.

[0027] 10. By arranging the long strip-shaped relief groove on the housing and passing the first steel wire rope through the relief groove, the first steel wire rope can move in the relief groove, thereby avoiding interference between the first steel wire rope and the housing and damage to the first steel wire rope, so as to improve the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 One of the three-dimensional views of a heavy hammer manhole cover opening device of the present invention;

[0029] Figure 2 Another three-dimensional view of a heavy hammer manhole cover opening device of the present invention;

[0030] Figure 3 The third three-dimensional view of a heavy hammer manhole cover opening device of the present invention;

[0031] Figure 4 is Figure 3 The partial enlarged view of part A;

[0032] Wherein, Figures 1 to 4 The corresponding relationship between the reference numerals in

[0033] 10 matrix, 101 side wall, 102 top wall, 11 lower hinge seat, 12 rotating rod, 13 weight, 14 housing, 15 fixing plate, 16 first spring, 17 moving component, 171 rack, 172 moving shaft, 173 bushing, 18 second spring, 19 cover plate, 20 bracket, 21 first guide pulley, 22 first steel wire rope, 23 motor, 24 first guide wheel, 25 second steel wire rope, 26 second guide wheel, 27 third steel wire rope, 28 first connection ring, 29 second connection ring, 30 first operation box, 32 first ratchet, 33 first handle, 34 second operation box, 38 card slot, 39 connecting shaft, 40 lock catch, 41 torsion spring, 42 third guide pulley, 43 fourth steel wire rope, 44 fifth steel wire rope, 45 first support pulley, 46 second guide pulley, 47 second support pulley, 48 third guide pulley. Detailed implementation mode

[0034] The following combines specific implementation cases and appendices Figures 1 - 4 The present invention will be further described, but the present invention is not limited to these embodiments.

[0035] A weight manhole cover opening device, as Figures 1 to 4 shown, the weight manhole cover opening device is installed on the matrix 10. The matrix 10 includes a side wall 101 and a top wall 102. An escape opening is provided on the top wall 102. The weight manhole cover opening device includes: a lower hinge seat 11, a rotating rod 12, a weight 13, a housing 14, a fixing plate 15, a first spring 16, a moving component 17, a second spring 18, a cover plate 19, a bracket 20, a first guide pulley 21 and a first steel wire rope 22; the lower hinge seat 11 is fixed on the side wall 101; one end of the rotating rod 12 is rotatably connected to the lower hinge seat 11; the weight 13 is connected to the other end of the rotating rod 12; the housing 14 is a hollow cavity, and the housing 14 is fixed on the side wall of the rotating rod 12; two fixing plates 15 are embedded in the housing 14, and the two fixing plates 15 are connected to both ends of the housing 14; the first spring 16 is embedded in the housing 14, and one end of the first spring 16 is connected to one fixing plate 15; the moving component 17 is slidably connected in the housing 14, and one end of the moving component 17 is connected to the other end of the first spring 16; the second spring 18 is embedded in the housing 14, one end of the second spring 18 is connected to the other fixing plate 15, and the second spring 18 is connected to the other end of the moving component 17; the cover plate 19 is buckled at the escape opening; the bracket 20 is fixed at the bottom of the cover plate 19; the first guide pulley 21 is fixed at the bottom of the top wall 102; one end of the first steel wire rope 22 is connected to the bracket 20, the first steel wire rope 22 is wound around the outside of the first guide pulley 21, and the first steel wire rope 22 is connected to the moving component 17.

[0036] By fixing the lower hinge base 11 on the side wall 101, rotatably connecting one end of the rotating rod 12 to the lower hinge base 11, and connecting the weight 13 to the other end of the rotating rod 12, it is realized that the weight 13 and the rotating rod 12 can rotate relative to the lower hinge base 11; by fixing the housing 14 on the side wall of the rotating rod 12, it is realized that the housing 14 and the rotating rod 12 move synchronously. By embedding two fixing plates 15 into the housing 14, connecting the two fixing plates 15 to both ends of the housing 14, and connecting one end of the first spring 16 to one fixing plate 15, it is realized to limit the first spring 16; by placing the moving component 17 into the housing 14, it is realized that the moving component 17 can move within the housing 14; by connecting one end of the moving component 17 to the other end of the first spring 16, connecting one end of the second spring 18 to the fixing plate 15, and connecting the second spring 18 to the other end of the moving component 17, it is realized that the first spring 16 and the second spring 18 support the moving component 17, so that when the moving component 17 moves within the housing 14, the moving component 17 compresses the first spring 16 or the second spring 18, and stretches the second spring 18 or the first spring 16. By buckling the cover plate 19 at the escape opening, it is realized that the cover plate 19 blocks the escape opening; by fixing the bracket 20 at the bottom of the cover plate 19, fixing the first guide pulley 21 at the bottom of the top wall 102, connecting one end of the first steel wire rope 22 to the bracket 20, winding the first steel wire rope 22 around the outside of the first guide pulley 21, and connecting the first steel wire rope 22 to the moving component 17, it is realized that the moving component 17 can pull the first steel wire rope 22, so that after the first guide pulley 21 supports the first steel wire rope 22, the cover plate 19 is pulled to rotate; moreover, the gravity of the cover plate 19 passes through the first steel wire rope 22 and, through the guiding of the first guide pulley 21, applies an upward acting force on the moving component 17.

[0037] When specifically using the product, when the cover plate 19 is buckled at the escape opening, the first steel wire rope 22 between the moving component 17 and the first guiding pulley 21 is in an inclined state, that is, the first steel wire rope 22 forms a certain angle with the midline of the side wall 101. At this time, the first spring 16 and the second spring 18 are in a normal state, and the rotating rod 12 is in a horizontal state. When preparing to open the cover plate 19, an external force is applied to the moving component 17 to pull the moving component 17, so that the moving component 17 moves towards the lower hinge seat 11, and the distance between the moving component 17 and the lower hinge seat 11, that is, the torque, decreases. At this time, the first spring 16 is in a stretched state, and the second spring 18 is in a compressed state; when the weight of the cover plate 19 remains unchanged, the torque between the first steel wire rope 22 and the lower hinge seat 11 decreases; at this time, the torque between the weight 13 and the lower hinge seat 11 remains unchanged. Therefore, the rotating rod 12 will rotate downward under the action of the weight 13, so that the rotating rod 12 pulls the first steel wire rope 22 downward, and further the first steel wire rope 22 pulls the bracket 20 and the cover plate 19 to open; when the first steel wire rope 22 is parallel to the bracket 20, the cover plate 19 stops opening. When preparing to close the cover plate 19, the external force applied to the moving component 17 is stopped, and the first spring 16 and the second spring 18 reset, so that the moving component 17 moves away from the lower hinge seat 11. At this time, the torque between the first steel wire rope 22 and the lower hinge seat 11 increases, and under the action of the gravity of the cover plate 19, the cover plate 19 rotates downward, and at the same time the rotating rod 12 rotates upward; when the cover plate 19 closes the escape opening, the rotating rod 12 is in a horizontal state.

[0038] By slidingly connecting the moving component 17 in the housing 14, connecting the two ends of the first steel wire rope 22 to the moving component 17 and the bracket 20 fixed to the bottom of the cover plate 19 respectively, and at the same time, connecting the two ends of the rotating rod 12 to the lower hinge seat 11 and the weight 13 respectively, so as to realize that the lower hinge seat 11, the rotating rod 12, the weight 13 and the moving component 17 (the gravity of the cover plate 19 applies an upward acting force to the moving component 17 through the first steel wire rope 22) form a lever structure. When pulling the moving component 17 towards the lower hinge seat 11, the torque between the moving component 17 and the lower hinge seat 11 decreases. Therefore, the weight 13 will pull the rotating rod 12 to rotate downward, so that the rotating rod 12 pulls the first steel wire rope 22 downward, and further pulls the cover plate 19 to open. At the same time, when the external force applied to the moving component 17 is stopped, the elastic force of the first spring 16 and the second spring 18 reset is utilized to realize the closing of the cover plate 19. With the above structure, by using the lever principle and the elastic force when the first spring 16 and the second spring 18 reset, to realize the opening and closing of the cover plate 19, not only can the acting force required to open the cover plate 19 be reduced, thereby improving the efficiency of opening the cover plate 19, but also the cover plate 19 can be closed without applying an external force, so as to improve the use experience of the product.

[0039] In an embodiment of the present invention, as Figures 1 to 4 shown, the moving component 17 includes: a rack 171, a moving shaft 172, and a bushing 173; the rack 171 is slidably connected within the housing 14, and the rack 171 is connected to the other end of the first spring 16; the moving shaft 172 is embedded within the housing 14, and the moving shaft 172 is connected to the rack 171; the bushing 173 is wound around the outside of the moving shaft 172, and the bushing 173 is connected to the first steel wire rope 22; wherein, the second spring 18 is sleeved on the outside of the moving shaft 172, and the second spring 18 is in contact with the bushing 173.

[0040] By slidably connecting the rack 171 within the housing 14 and connecting the rack 171 to the other end of the first spring 16, it is possible to achieve that the rack 171 can slide within the housing 14 and at the same time, the rack 171 can pull the first spring 16 to stretch. By embedding the moving shaft 172 within the housing 14 and connecting the moving shaft 172 to the rack 171, it is possible to achieve the synchronous movement of the rack 171 and the moving shaft 172; by winding the bushing 173 around the outside of the moving shaft 172 and connecting the bushing 173 to the first steel wire rope 22, it is possible to achieve the synchronous movement of the bushing 173 and the moving shaft 172, so as to achieve that the moving shaft 172 pulls the first steel wire rope 22 through the bushing 173. By sleeving the second spring 18 on the outside of the moving shaft 172 and making the second spring 18 in contact with the bushing 173, it is possible to achieve that the moving shaft 172 compresses the second spring 18 through the bushing 173.

[0041] Specifically, a dovetail-shaped clamping block is provided at the bottom of the rack 171, a dovetail-shaped clamping groove is provided within the housing 14, and the dovetail-shaped clamping block is embedded in the dovetail-shaped clamping groove, so as to achieve that the rack 171 can be slidably connected within the housing 14. At the same time, when the rotating rod 12 and the housing 14 rotate, the housing 14 can drive the rack 171 and the moving shaft 172 to rotate within the housing 14, so as to achieve pulling the first steel wire rope 22.

[0042] In an embodiment of the present invention, as Figures 1 to 4 shown, the heavy hammer manhole cover opening device further includes: a motor 23 and a gear; the motor 23 is provided with an output shaft, the motor 23 is fixed on the side wall of the housing 14, and the output shaft of the motor 23 passes through the housing 14; the gear is sleeved on the outside of the output shaft of the motor 23, and the gear meshes with the rack 171.

[0043] By fixing the motor 23 on the housing 14, passing the output shaft of the motor 23 through the housing 14, sleeving the gear on the outside of the output shaft of the motor 23, and making the gear mesh with the rack 171, it is possible to achieve that the motor 23 drives the gear to rotate, so that the gear meshes with the rack 171 to move, so as to reduce the distance between the moving shaft 172 and the lower hinge seat 11.

[0044] With the above structure, the motor 23 and the gear drive the rack 171 to move, so as to reduce the distance between the moving shaft 172 and the lower hinge seat 11, thereby driving the cover plate 19 to open by using the principle of the lever, and further realizing the electric opening of the cover plate 19.

[0045] Specifically, a notch is provided at the end of the rack 171. When the motor 23 drives the rack 171 to move through the gear, the gear is opposite to the notch of the rack 171, and the motor 23 drives the gear to rotate idly, so that the rack 171 cannot be driven to move continuously, thereby realizing the limitation of the moving distance of the rack 171.

[0046] In an embodiment of the present invention, as Figures 1 to 4 shown, the heavy hammer manhole cover opening device further includes: a first guide wheel 24, a second steel wire rope 25, a second guide wheel 26 and a third steel wire rope 27; the first guide wheel 24 is rotatably connected to the side wall of the rotating rod 12; one end of the second steel wire rope 25 is connected to the bushing 173, the second steel wire rope 25 passes through the housing 14, the second steel wire rope 25 is wound around the outside of the first guide wheel 24, and the other end of the second steel wire rope 25 is located below the cover plate 19; the second guide wheel 26 is rotatably connected to the side wall of the rotating rod 12, and the second guide wheel 26 is located above the first guide wheel 24; one end of the third steel wire rope 27 is connected to the bushing 173, the third steel wire rope 27 passes through the housing 14, the third steel wire rope 27 is wound around the outside of the second guide wheel 26, the third steel wire rope 27 passes through the top wall 102, and the other end of the third steel wire rope 27 is located above the cover plate 19.

[0047] By rotatably connecting the first guide wheel 24 to the side wall of the rotating rod 12 and connecting one end of the second steel wire rope 25 to the bushing 173, the second steel wire rope 25 passes through the housing 14, the second steel wire rope 25 is wound around the outside of the first guide wheel 24, and the other end of the second steel wire rope 25 is located below the cover plate 19, so as to realize the support of the first guide wheel 24 for the second steel wire rope 25, thereby enabling the worker to manually open the cover plate 19 by pulling the second steel wire rope 25 below the cover plate 19.

[0048] In an embodiment of the present invention, as Figures 1 to 4As shown in the figure, the heavy hammer manhole cover opening device further includes: a first guide wheel 24, a second steel wire rope 25, a second guide wheel 26, and a third steel wire rope 27; the first guide wheel 24 is rotatably connected to the side wall of the rotating rod 12; one end of the second steel wire rope 25 is connected to the bushing 173, the second steel wire rope 25 passes through the housing 14, the second steel wire rope 25 is wound around the outside of the first guide wheel 24, and the other end of the second steel wire rope 25 is located below the cover plate 19; the second guide wheel 26 is rotatably connected to the side wall of the rotating rod 12, and the second guide wheel 26 is located above the first guide wheel 24; one end of the third steel wire rope 27 is connected to the bushing 173, the third steel wire rope 27 passes through the housing 14, the third steel wire rope 27 is wound around the outside of the second guide wheel 26, the third steel wire rope 27 passes through the top wall 102, and the other end of the third steel wire rope 27 is located above the cover plate 19.

[0049] By rotatably connecting the second guide wheel 26 to the side wall of the rotating rod 12, connecting one end of the third steel wire rope 27 to the bushing 173, passing the third steel wire rope 27 through the housing 14, winding the third steel wire rope 27 around the outside of the second guide wheel 26, and positioning the other end of the third steel wire rope 27 above the cover plate 19, the second guide wheel 26 supports the third steel wire rope 27, enabling a worker to manually open the cover plate 19 by pulling the third steel wire rope 27 above the cover plate 19.

[0050] With the above structure, the worker moves by pulling the second steel wire rope 25 or the third steel wire rope 27, driving the bushing 173 and the moving shaft 172 to move, thereby using the lever principle to drive the cover plate 19 to open, and thus enabling the cover plate 19 to be manually opened whether the worker is above or below the cover plate 19, enhancing the product's usability.

[0051] Specifically, this product can either drive the cover plate 19 to open through the motor 23 to achieve electric opening of the cover plate 19, or pull the second steel wire rope 25 or the third steel wire rope 27 to achieve manual opening of the cover plate 19, enhancing the product's usability.

[0052] In the embodiment of the present invention, as Figures 1 to 4 shown, the heavy hammer manhole cover opening device further includes: a first connecting ring 28 and a second connecting ring 29; the first connecting ring 28 is connected to the outer wall of the bushing 173 and is connected to the first steel wire rope 22; the second connecting ring 29 is connected to the outer wall of the bushing 173 and is connected to the second steel wire rope 25 and the third steel wire rope 27.

[0053] By connecting the first connecting ring 28 to the outer wall of the bushing 173 and connecting the first connecting ring 28 to the first steel wire rope 22, the firmness of the connection between the first steel wire rope 22 and the bushing 173 is improved, thereby enhancing the user experience of the product. By connecting the second connecting ring 29 to the outer wall of the bushing 173 and connecting the second connecting ring 29 to the second steel wire rope 25 and the third steel wire rope 27, the firmness of the connection between the second steel wire rope 25 and the third steel wire rope 27 and the bushing 173 is improved, thereby enhancing the user experience of the product.

[0054] In an embodiment of the present invention, as Figures 1 to 4 shown, the heavy hammer manhole cover opening device further includes: a first operation box 30, a first wire reel, a first ratchet 32, a first handle 33 and a first pawl; the first operation box 30 is installed on the side wall 101; the first wire reel is rotatably connected to the first operation box 30, and the second steel wire rope 25 is wound around the outside of the first wire reel; the first ratchet 32 is sleeved on the outside of the first wire reel; the first handle 33 is sleeved on the outside of the first wire reel, and the first handle 33 is located on one side of the first ratchet 32; the first pawl is rotatably connected to the first operation box 30, and the first pawl is embedded in the tooth groove of the first ratchet 32.

[0055] By rotatably connecting the first wire reel to the side wall 101 and winding the second steel wire rope 25 around the outside of the first wire reel, the first wire reel can be rotated to wind the second steel wire rope 25 around the outside of the first wire reel, thereby pulling the second steel wire rope 25. By sleeving the first ratchet 32 on the outside of the first wire reel and sleeving the first handle 33 on the outside of the first wire reel, the first ratchet 32 and the first handle 33 can be rotated synchronously with the first wire reel, so that the user can drive the first wire reel to rotate through the handle, and then the first ratchet 32 can be rotated synchronously with the first wire reel. By rotatably connecting the first pawl to the first operation box 30 and embedding the first pawl in the tooth groove of the first ratchet 32, when the first ratchet 32 rotates clockwise, the first pawl slides along the circumferential direction of the first ratchet 32. When the first ratchet 32 is about to rotate counterclockwise, since the first pawl is embedded in the tooth groove of the first ratchet 32, the first ratchet 32 can be locked, thereby realizing self-locking of the first ratchet 32 to prevent the moving shaft 172 from resetting, thus ensuring the normal use of the product.

[0056] In an embodiment of the present invention, as Figures 1 to 4As shown in the figure, the counterweight manhole cover opening device further includes: a second operation box 34, a second wire spool, a second ratchet, a second handle, and a second pawl; the second operation box 34 is installed on the top wall 102; the second wire spool is rotatably connected to the second operation box 34, and the third steel wire rope 27 is wound around the outside of the second wire spool; the second ratchet is sleeved on the outside of the second wire spool; the second handle is sleeved on the outside of the second wire spool, and the second handle is located on one side of the second ratchet; the second pawl is rotatably connected to the second operation box 34, and the second pawl is embedded in the tooth groove of the second ratchet.

[0057] By rotatably connecting the second wire spool to the top wall 102 and winding the third steel wire rope 27 around the outside of the second wire spool, the second wire spool is rotated to wind the second steel wire rope 25 around the outside of the second wire spool, thereby pulling the second steel wire rope 25. By sleeving the second ratchet on the outside of the second wire spool and sleeving the second handle on the outside of the second wire spool, the second ratchet and the second handle are rotated synchronously with the second wire spool, so that the user can drive the second wire spool to rotate through the handle, and then the second ratchet is rotated synchronously with the second wire spool. By rotatably connecting the second pawl to the second operation box 34 and embedding the second pawl in the tooth groove of the second ratchet, when the second ratchet rotates clockwise, the second pawl slides along the circumferential direction of the second ratchet. When the second ratchet is about to rotate counterclockwise, since the second pawl is embedded in the tooth groove of the second ratchet, the second ratchet can be locked, thereby realizing self-locking of the second ratchet to prevent the moving shaft 172 from resetting, thus ensuring the normal use of the product.

[0058] In an embodiment of the present invention, as Figures 1 to 4 shown in the figure, the counterweight manhole cover opening device further includes: a card slot 38, a connecting shaft 39, a lock 40, a torsion spring 41, a third guide wheel 42, a fourth steel wire rope 43, and a fifth steel wire rope 44; the card slot 38 is triangular, and the card slot 38 is arranged at the bottom of the rack 171; the connecting shaft 39 is connected to the rotating rod 12; the lock 40 is triangular, the lock 40 is sleeved on the outside of the connecting shaft 39, and the lock 40 is rotatably connected to the connecting shaft 39; the torsion spring 41 is sleeved on the outside of the connecting shaft 39, one end of the torsion spring 41 is connected to the connecting shaft 39, and the other end of the torsion spring 41 is connected to the lock 40; the third guide wheel 42 is rotatably connected to the side wall 101, and the third guide wheel 42 is located below the lock 40; one end of the fourth steel wire rope 43 is connected to the lock 40, the fourth steel wire rope 43 is wound around the outside of the third guide wheel 42, and the other end of the fourth steel wire rope 43 is located below the cover plate 19; one end of the fifth steel wire rope 44 is connected to the lock 40, the fifth steel wire rope 44 is wound around the outside of the third guide wheel 42, the fifth steel wire rope 44 passes through the top wall 102, and the other end of the fifth steel wire rope 44 is located above the cover plate 19.

[0059] By connecting the connecting shaft 39 with the rotating rod 12, sleeving the latch 40 outside the connecting shaft 39, and rotatably connecting the latch 40 with the connecting shaft 39, the latch 40 can be rotated relative to the connecting shaft 39; by sleeving the torsion spring 41 outside the connecting shaft 39, connecting one end of the torsion spring 41 with the connecting shaft 39, and connecting the other end of the torsion spring 41 with the latch 40, the torsion spring 41 can support the latch 40, so that the torsion spring 41 drives the latch 40 to reset. By rotatably connecting the third guide wheel 42 with the side wall 101 and winding the fourth steel wire rope 43 and the fifth steel wire rope 44 around the outside of the third guide wheel 42, the third guide wheel 42 can support the fourth steel wire cylinder and the fifth steel wire rope 44; by connecting one end of the fourth steel wire rope 43 with the latch 40 and making the other end of the fourth steel wire rope 43 located below the cover plate 19, when the user is below the cover plate 19, pulling the fourth steel wire rope 43 can drive the latch 40 to rotate; at the same time, by connecting one end of the fifth steel wire rope 44 with the latch 40 and making the other end of the fifth steel wire rope 44 located below the cover plate 19, when the user is below the cover plate 19, pulling the fifth steel wire rope 44 can drive the latch 40 to rotate.

[0060] With the above structure, when the rack 171 moves downward towards the lower hinge seat 11, the end of the rack 171 first pushes and rotates the latch 40, and then the rack 171 moves; when the latch 40 is opposite to the card slot 38 at the bottom of the rack 171, the torsion spring 41 drives the latch 40 to reset, so that the latch 40 is embedded in the card slot 38, realizing the clamping connection between the latch 40 and the rack 171, avoiding the movement of the rack 171, and thus realizing that the cover plate 19 is in the open state without continuing to apply force to the moving shaft 172. When preparing to close the cover plate 19, the user pulls the fourth steel wire rope 43 or the fifth steel wire rope 44, so that the fourth steel wire rope 43 or the fifth steel wire rope 44 pulls the latch 40 to rotate, so that the latch 40 disengages from the card slot 38, facilitating the first spring 16 and the second spring 18 to drive the moving shaft 172 to move away from the lower hinge seat 11, so that the cover plate 19 is closed, and further realizing that the user can close the cover plate 19 above or below the cover plate 19, improving the user experience of the product.

[0061] In the embodiment of the present invention, as Figures 1 to 4As shown in the figure, the heavy hammer manhole cover opening device further includes: a first support pulley 45, a second guide pulley 46, a second support pulley 47 and a third guide pulley 48; the support pulley is fixed on the top wall 102; the second guide pulley 46 is fixed on the top wall 102, and the second guide pulley 46 is located on one side of the support pulley; the support pulley is fixed on the top wall 102; the second guide pulley 46 is fixed on the top wall 102; wherein, the first steel wire rope 22 is respectively wound around the outer sides of the first support pulley 45 and the second guide pulley 46, and the third steel wire rope 27 and the fifth steel wire rope 44 are respectively wound around the outer sides of the second support pulley 47 and the third guide pulley 48.

[0062] By fixing the first support pulley 45 and the second guide pulley 46 on the top wall 102, and winding the first steel wire rope 22 around the outer sides of the first support pulley 45 and the second guide pulley 46 respectively, the first support pulley 45 and the second guide pulley 46 support and guide the first steel wire rope 22. By fixing the second support pulley 47 and the third guide pulley 48 on the top wall 102, and winding the third steel wire rope 27 and the fifth steel wire rope 44 around the outer sides of the second support pulley 47 and the third guide pulley 48 respectively, the second support pulley 47 and the third guide pulley 48 support and guide the third steel wire rope 27 and the fifth steel wire rope 44.

[0063] In an embodiment of the present invention, as Figures 1 to 4 shown, the heavy hammer manhole cover opening device further includes: a relief groove; the relief groove is strip-shaped, the relief groove is provided on the housing 14, and the first steel wire rope 22 passes through the relief groove.

[0064] By providing the strip-shaped relief groove on the housing 14 and making the first steel wire rope 22 pass through the relief groove, the first steel wire rope 22 can move in the relief groove, thereby avoiding interference between the first steel wire rope 22 and the housing 14, avoiding damage to the first steel wire rope 22, and improving the quality of the product.

[0065] In the description of the present invention, the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "upper", "lower", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention; the terms "connection", "installation", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the description of the present invention, the descriptions of the terms "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0067] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heavy hammer manhole cover opening device, the heavy hammer manhole cover opening device is installed on a base body, the base body includes a side wall and a top wall, and an escape opening is provided on the top wall. Characterized in that, The heavy hammer manhole cover opening device includes: A lower hinge seat, the lower hinge seat is fixed on the side wall; A rotating rod, one end of the rotating rod is rotatably connected to the lower hinge seat; A heavy hammer, the heavy hammer is connected to the other end of the rotating rod; A housing, the housing is a hollow cavity, and the housing is fixed on the side wall of the rotating rod; Fixed plates, two fixed plates are embedded in the housing, and the two fixed plates are connected to both ends of the housing; A first spring, the first spring is embedded in the housing, and one end of the first spring is connected to one of the fixed plates; A moving component, the moving component is slidably connected in the housing, and one end of the moving component is connected to the other end of the first spring; A second spring, the second spring is embedded in the housing, one end of the second spring is connected to the other fixed plate, and the second spring is connected to the other end of the moving component; A cover plate, the cover plate is buckled at the escape opening; A bracket, the bracket is fixed at the bottom of the cover plate; A first guide pulley, the first guide pulley is fixed at the bottom of the top wall; A first steel wire rope, one end of the first steel wire rope is connected to the bracket, the first steel wire rope is wound around the outside of the first guide pulley, and the first steel wire rope is connected to the moving component.

2. A heavy hammer manhole cover opening device according to claim 1, Characterized in that, The moving component includes: A rack, the rack is slidably connected in the housing, and the rack is connected to the other end of the first spring; A moving shaft, the moving shaft is embedded in the housing, and the moving shaft is connected to the rack; A bushing, the bushing is wound around the outside of the moving shaft, and the bushing is connected to the first steel wire rope; Wherein, the second spring is sleeved on the outside of the moving shaft, and the second spring is in contact with the bushing.

3. A heavy hammer manhole cover opening device according to claim 2, Characterized in that, The heavy hammer manhole cover opening device further includes: A motor, the motor is provided with an output shaft, the motor is fixed on the side wall of the housing, and the output shaft of the motor passes through the housing; A gear, the gear is sleeved on the outside of the output shaft of the motor, and the gear meshes with the rack.

4. A heavy hammer manhole cover opening device according to claim 2, Characterized in that, The heavy hammer manhole cover opening device further includes: A first guide wheel, the first guide wheel is rotatably connected to the side wall of the rotating rod; A second steel wire rope, one end of the second steel wire rope is connected to the bushing, the second steel wire rope passes through the housing, the second steel wire rope is wound around the outside of the first guide wheel, and the other end of the second steel wire rope is located below the cover plate; A second guide wheel, the second guide wheel is rotatably connected to the side wall of the rotating rod, and the second guide wheel is located above the first guide wheel. The third steel wire rope, one end of the third steel wire rope is connected to the bushing, the third steel wire rope passes through the housing, the third steel wire rope is wound around the outside of the second guide wheel, the third steel wire rope passes through the top wall, and the other end of the third steel wire rope is located above the cover plate.

5. The heavy hammer manhole cover opening device according to claim 4, characterized in that the heavy hammer manhole cover opening device further comprises: a first connecting ring, the first connecting ring is connected to the outer wall of the bushing, and the first connecting ring is connected to the first steel wire rope; a second connecting ring, the second connecting ring is connected to the outer wall of the bushing, and the second connecting ring is connected to the second steel wire rope and the third steel wire rope.

6. The heavy hammer manhole cover opening device according to claim 4, characterized in that the heavy hammer manhole cover opening device further comprises: a first operation box, the first operation box is installed on the side wall; a first wire spool, the first wire spool is rotatably connected to the first operation box, and the second steel wire rope is wound around the outside of the first wire spool; a first ratchet wheel, the first ratchet wheel is sleeved on the outside of the first wire spool; a first handle, the first handle is sleeved on the outside of the first wire spool, and the first handle is located on one side of the first ratchet wheel; a first pawl, the first pawl is rotatably connected to the first operation box, and the first pawl is embedded in the tooth groove of the first ratchet wheel.

7. The heavy hammer manhole cover opening device according to claim 6, characterized in that the heavy hammer manhole cover opening device further comprises: a second operation box, the second operation box is installed on the top wall; a second wire spool, the second wire spool is rotatably connected to the second operation box, and the third steel wire rope is wound around the outside of the second wire spool; a second ratchet wheel, the second ratchet wheel is sleeved on the outside of the second wire spool; a second handle, the second handle is sleeved on the outside of the second wire spool, and the second handle is located on one side of the second ratchet wheel; a second pawl, the second pawl is rotatably connected to the second operation box, and the second pawl is embedded in the tooth groove of the second ratchet wheel.

8. The heavy hammer manhole cover opening device according to claim 7, characterized in that the heavy hammer manhole cover opening device further comprises: a card slot, the card slot is triangular, and the card slot is arranged at the bottom of the rack; a connecting shaft, the connecting shaft is connected to the rotating rod; a lock catch, the lock catch is triangular, the lock catch is sleeved on the outside of the connecting shaft, and the lock catch is rotatably connected to the connecting shaft; a torsion spring, the torsion spring is sleeved on the outside of the connecting shaft, one end of the torsion spring is connected to the connecting shaft, and the other end of the torsion spring is connected to the lock catch; a third guide wheel, the third guide wheel is rotatably connected to the side wall, and the third guide wheel is located below the lock catch; a fourth steel wire rope, one end of the fourth steel wire rope is connected to the lock catch, the fourth steel wire rope is wound around the outside of the third guide wheel, and the other end of the fourth steel wire rope is located below the cover plate; The fifth steel wire rope, one end of the fifth steel wire rope is connected to the buckle, the fifth steel wire rope winds around the outside of the third guide pulley, the fifth steel wire rope passes through the top wall, and the other end of the fifth steel wire rope is located above the cover plate.

9. A heavy hammer manhole cover opening device according to claim 8, characterized in that the heavy hammer manhole cover opening device further comprises: a first support pulley, the support pulley is fixed on the top wall; a second guide pulley, the second guide pulley is fixed on the top wall, and the second guide pulley is located on one side of the support pulley; a second support pulley, the support pulley is fixed on the top wall; a third guide pulley, the second guide pulley is fixed on the top wall; wherein, the first steel wire rope is respectively wound around the outside of the first support pulley and the second guide pulley, and the third steel wire rope and the fifth steel wire rope are respectively wound around the outside of the second support pulley and the third guide pulley.

10. A heavy hammer manhole cover opening device according to any one of claims 1 to 9, characterized in that the heavy hammer manhole cover opening device further comprises: a relief groove, the relief groove is strip-shaped, the relief groove is arranged on the housing, and the first steel wire rope passes through the relief groove.

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