Road well lid lifting device

Abstract

The utility model discloses a road well lid lifting device, and relates to the field of lifting devices, the road well lid lifting device comprises a machine box, brake type universal wheels, a pushing handle, a lifting assembly and a clamping assembly, the lifting assembly comprises a support, a connecting shaft, a pressing rod, a connecting disc, a chain and a lifting hook, and the clamping assembly comprises a worm, a worm gear, a two-way lead screw, a threaded sleeve and a clamping block; the pressing cover drives the connecting shaft to rotate on the support, so that the connecting disc at the other end of the pressing rod drives the chain at the bottom and the lifting hook to be lifted upwards, the well lid is lifted, the well lid is subjected to vertical force through the lifting hook, the risk that the well lid is damaged is reduced, the worm is rotated, the worm drives the worm wheel to rotate, and therefore the two-way lead screw is driven to rotate. The threaded sleeve in threaded connection with the outer surface of the bidirectional lead screw moves on the bidirectional lead screw, the threaded sleeve drives the clamping blocks to move oppositely, so that the clamping blocks clamp the well lid, the situation that the well lid falls off and hurts workers is avoided, and the safety of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting devices, in particular to a road manhole cover lifting device. Background Art

[0002] Road maintenance refers to the care, repair and renewal of roads and their ancillary facilities to ensure the normal operation of roads and extend their service life. It usually includes road surface maintenance, drainage system maintenance, roadbed and slope maintenance, etc. Road maintenance work is crucial to ensuring traffic safety, improving road use efficiency and extending road service life. Through reasonable planning and scientific management, the quality and efficiency of road maintenance can be effectively improved.

[0003] Road manhole cover maintenance is also a type of road maintenance and an important part of urban infrastructure management. It plays an important role in ensuring the safety of pedestrians and vehicles, maintaining urban drainage systems and communication networks, etc. During maintenance, workers are required to lift the manhole cover with tools such as crowbars, and then carry out maintenance work.

[0004] The existing lifting method is that workers use crowbars to pry up the holes on the surface of the manhole cover and then carry out maintenance work. However, using a crowbar on the holes will cause damage to the holes of the manhole cover, resulting in a decrease in the durability of the manhole cover, which is not conducive to the long-term practical use of the manhole cover. In addition, the manhole cover has no protective device after lifting. If it falls off after lifting, it will cause harm to the workers, and the safety is low. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the above problems existing in the prior art, the utility model provides a road manhole cover lifting device.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a road manhole cover lifting device, comprising a chassis, a brake-type universal wheel is provided on the lower surface of the chassis, a push handle is fixedly connected to one side of the chassis, a lifting assembly is fixedly connected to the upper surface of the chassis, and a clamping assembly is provided on one side of the chassis;

[0009] A lifting assembly comprises two brackets fixedly connected to the upper surface of the chassis, a connecting shaft is interspersed between the two brackets, a pressure rod is fixedly connected to the outer surface of the connecting shaft, one end of the pressure rod is movably connected to a connecting plate, two chains are fixedly connected to the lower surface of the connecting plate, and the bottom ends of the two chains are fixedly connected to a hook;

[0010] The clamping assembly includes a worm screw inserted into the inside of the chassis, the outer surface of the worm screw is movably connected to a worm wheel, one end of the worm wheel is fixedly connected to a bidirectional lead screw, one end of the bidirectional lead screw is inserted into one side of the chassis, the outer surface of the bidirectional lead screw is threadedly connected to two threaded sleeves, and the outer surfaces of the two threaded sleeves are fixedly connected to clamping blocks.

[0011] As a preferred solution of the road manhole cover lifting device described in the utility model, the chassis is divided into two left and right chassis, the two chassis are connected by a bidirectional screw rod, and the bidirectional screw rod is movably connected to the inside of the chassis through a bearing.

[0012] As a preferred solution of the road manhole cover lifting device described in the utility model, the cross-section of the bracket is triangular, and the outer surface of the bracket is movably connected to the connecting shaft through a bearing seat.

[0013] As a preferred solution of the road manhole cover lifting device described in the utility model, one end of the pressure rod close to the connecting plate is fixedly connected to the connecting shaft, and the pressure rod and the connecting plate are hinged through a hinge seat.

[0014] As a preferred solution of the road manhole cover lifting device described in the utility model, one end of the worm is movably connected to the inner wall of the chassis through a bearing seat, the outer surface of the worm is movably connected to the chassis through a bearing, and the end of the worm away from the chassis is fixedly connected with a rotating handle.

[0015] As a preferred solution of the road manhole cover lifting device described in the utility model, the outer surface of the clamping block is provided with an arc-shaped groove, and the interior of the arc-shaped groove is provided with a clamping groove, and the clamping groove can limit the manhole cover.

[0016] (III) Beneficial effects

[0017] The utility model provides a road manhole cover lifting device, which has the following beneficial effects:

[0018] 1. Hook the hook into the hole of the manhole cover, and then press down one end of the pressure rod. The pressure cover drives the connecting shaft to rotate on the bracket, so that the connecting plate at the other end of the pressure rod drives the bottom chain and the hook to lift up, thereby lifting the manhole cover. Avoid leveraging the manhole cover at the hole of the manhole cover. Instead, the manhole cover is subjected to vertical force through the hook, reducing the risk of damage to the manhole cover.

[0019] 2. Rotate the worm so that the worm drives the worm wheel to rotate, thereby driving the bidirectional lead screw to rotate. The threaded sleeve connected to the outer surface of the bidirectional lead screw moves on the bidirectional lead screw, and the threaded sleeve drives the clamping blocks to move toward each other, so that the clamping blocks clamp the manhole cover to prevent the manhole cover from falling off and causing harm to the staff, thereby improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 2 It is a structural schematic diagram of the chassis of the utility model.

[0023] Figure 3 It is a structural schematic diagram of the lifting assembly of the utility model.

[0024] Figure 4 It is a structural schematic diagram of the clamping assembly of the utility model.

[0025] In the figure, 1. lifting assembly; 101. pressure rod; 102. bracket; 103. hook; 104. chain; 105. connecting plate; 106. connecting shaft; 2. brake-type universal wheel; 3. chassis; 4. push handle; 5. clamping assembly; 501. threaded sleeve; 502. worm gear; 503. worm; 504. bidirectional screw; 505. clamping block; 506. arc groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] Example 1

[0028] Reference Figure 1 and Figure 3 , is the first embodiment of the utility model, which provides a road manhole cover lifting device, including a chassis 3, a brake-type universal wheel 2 is provided on the lower surface of the chassis 3, a pushing handle 4 is fixedly connected to one side of the chassis 3, a lifting assembly 1 is fixedly connected to the upper surface of the chassis 3, a clamping assembly 5 is provided on one side of the chassis 3, and the lifting assembly 1 includes two brackets 102 fixedly connected to the upper surface of the chassis 3, a connecting shaft 106 is interspersed between the two brackets 102, a pressure rod 101 is fixedly connected to the outer surface of the connecting shaft 106, one end of the pressure rod 101 is movably connected to a connecting disk 105, and the lower surface of the connecting disk 105 is fixedly connected to two chains 104, and the bottom ends of the two chains 104 are fixedly connected to hooks 103.

[0029] Specifically, the cross section of the bracket 102 is triangular, the outer surface of the bracket 102 is movably connected to the connecting shaft 106 through a bearing seat, one end of the pressure rod 101 close to the connecting disk 105 is fixedly connected to the connecting shaft 106, and the pressure rod 101 and the connecting disk 105 are hinged through a hinge seat.

[0030] Further, the pressure rod 101 is pressed down, and one end of the pressure rod 101 close to the connecting plate 105 is fixedly connected to the outer surface of the connecting shaft 106. The two ends of the connecting shaft 106 are movably connected to the bracket 102 through the bearing seat. According to the lever principle, after one end of the pressure rod 101 connected to the connecting shaft 106 is pressed down, the connecting plate 105 close to one end of the connecting part is lifted up, thereby driving the chain 104 and the hook 103 at the bottom of the connecting plate 105 to lift upward, thereby realizing the lifting of the manhole cover.

[0031] Example 2

[0032] Reference Figure 1 , Figure 2 and Figure 4 , which is the second embodiment of the utility model. This embodiment is based on the previous embodiment. The clamping assembly 5 includes a worm 503 inserted into the chassis 3. The outer surface of the worm 503 is movably connected with a worm wheel 502. One end of the worm wheel is fixedly connected with a bidirectional screw rod 504. One end of the bidirectional screw rod 504 is inserted into one side of the chassis 3. The outer surface of the bidirectional screw rod 504 is threadedly connected with two threaded sleeves 501. The outer surfaces of the two threaded sleeves 501 are fixedly connected with clamping blocks 505.

[0033] Specifically, the chassis 3 is divided into two left and right chassis 3, and the two chassis 3 are connected by a bidirectional screw rod 504, and the bidirectional screw rod 504 is movably connected to the inside of the chassis 3 through a bearing, one end of the worm 503 is movably connected to the inner wall of the chassis 3 through a bearing seat, and the outer surface of the worm 503 is movably connected to the chassis 3 through a bearing, and the end of the worm 503 away from the chassis 3 is fixedly connected with a rotating handle, and the outer surface of the clamping block 505 is provided with an arc groove 506, and the inside of the arc groove 506 is provided with a card slot, which can limit the manhole cover.

[0034] Furthermore, the worm is rotated by turning the handle, thereby driving the worm wheel to rotate, and the worm wheel drives the bidirectional screw to rotate, so that the two threaded sleeves threadedly connected to the outer surface of the bidirectional screw move toward each other on the bidirectional screw, and the threaded sleeve drives the clamping block fixed on the outer surface to move, and the clamping block limits and fixes the manhole cover through the arc groove set on the outer surface and the clamping groove inside the arc groove, thereby preventing the manhole cover from falling off.

[0035] Working principle: When the road construction team needs to perform maintenance and lift the manhole cover, the construction personnel first push the handle 4 and the brake universal wheel 2 set at the bottom of the chassis 3 to push the device to the position of the manhole cover that needs to be lifted, and then fix the brake universal wheel 2. Then, the hook 103 at the bottom of the chain 104 is loaded to the hole position of the manhole cover, and the pressure rod 101 is pressed down. The end of the pressure rod 101 close to the connecting plate 105 is fixedly connected to the outer surface of the connecting shaft 106. The two ends of the connecting shaft 106 are movably connected to the bracket 102 through the bearing seat. According to the principle of leverage, after pressing down one end of the pressure rod 101 connected to the connecting shaft 106, the pressure rod 101 is pressed down to make the connecting plate 105 close to the connecting plate 105. The connecting disk 105 at one end of the connecting part is lifted up, thereby driving the chain 104 and the hook 103 at the bottom of the connecting disk 105 to be lifted upward, thereby realizing the lifting of the manhole cover. After the lifting is completed, the worm gear 502 is driven to rotate by turning the handle, and the worm gear 502 drives the bidirectional screw rod 504 to rotate, so that the two threaded sleeves 501 threadedly connected to the outer surface of the bidirectional screw rod 504 move toward each other on the bidirectional screw rod 504, and the threaded sleeve 501 drives the clamping block 505 fixedly connected to the outer surface to move, and the clamping block 505 limits and fixes the manhole cover through the arc groove 506 set on the outer surface and the card groove inside the arc groove 506, thereby preventing the manhole cover from falling off.

[0036] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A road manhole cover lifting device, comprising a chassis (3), characterized in that: The lower surface of the chassis (3) is provided with a brake-type universal wheel (2), one side of the chassis (3) is fixedly connected with a push handle (4), the upper surface of the chassis (3) is fixedly connected with a lifting assembly (1), and one side of the chassis (3) is provided with a clamping assembly (5); A lifting assembly (1) comprises two brackets (102) fixedly connected to the upper surface of a chassis (3), a connecting shaft (106) being interlaced between the two brackets (102), a pressure rod (101) being fixedly connected to the outer surface of the connecting shaft (106), one end of the pressure rod (101) being movably connected to a connecting plate (105), the lower surface of the connecting plate (105) being fixedly connected to two chains (104), and the bottom ends of the two chains (104) being fixedly connected to a hook (103); The clamping assembly (5) comprises a worm (503) inserted into the interior of the chassis (3); the outer surface of the worm (503) is movably connected to a worm wheel (502); one end of the worm wheel is fixedly connected to a bidirectional screw (504); one end of the bidirectional screw (504) is inserted into one side of the chassis (3); the outer surface of the bidirectional screw (504) is threadedly connected to two threaded sleeves (501); and the outer surfaces of the two threaded sleeves (501) are fixedly connected to clamping blocks (505).

2. A road manhole cover lifting device according to claim 1, characterized in that: The chassis (3) is divided into two left and right chassis (3), and the two chassis (3) are connected via a bidirectional screw rod (504), and the bidirectional screw rod (504) is movably connected to the inside of the chassis (3) via a bearing.

3. A road manhole cover lifting device according to claim 2, characterized in that: The cross section of the bracket (102) is triangular, and the outer surface of the bracket (102) is movably connected to the connecting shaft (106) via a bearing seat.

4. A road manhole cover lifting device according to claim 3, characterized in that: One end of the pressure rod (101) close to the connecting disk (105) is fixedly connected to the connecting shaft (106), and the pressure rod (101) and the connecting disk (105) are hinged via a hinge seat.

5. A road manhole cover lifting device according to claim 4, characterized in that: One end of the worm (503) is movably connected to the inner wall of the chassis (3) via a bearing seat, the outer surface of the worm (503) is movably connected to the chassis (3) via a bearing, and one end of the worm (503) away from the chassis (3) is fixedly connected to a rotating handle.

6. A road manhole cover lifting device according to claim 5, characterized in that: The outer surface of the clamping block (505) is provided with an arc-shaped groove (506), and the interior of the arc-shaped groove (506) is provided with a clamping groove, and the clamping groove can limit the position of the manhole cover.

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