Manhole cover replacement machine

Abstract

The present invention discloses a manhole cover replacement machine, which is used for replacing inspection manhole covers on the road surface, and comprises a frame, wherein the frame comprises two or more hollow columns, and a movable mounting platform is provided between the columns; a cutter head assembly for rotating and cutting the working surface is provided directly below the mounting platform, and a breaking and clamping mechanism for breaking the masonry material of the manhole body and clamping the manhole seat is provided directly below the cutter head assembly; a first driving mechanism for making the mounting platform reciprocate in the vertical direction is provided at the top of any of the columns, and a second driving mechanism for making the cutter head assembly rotate along the central axis is provided on the mounting platform. The manhole cover replacement machine provided by the present invention can complete the milling of the road surface, the lifting of the manhole seat and the loading of the manhole cover at one time, and solves the problems of insufficient power and rigidity of the existing equipment when operating on cement roads with a relatively hard texture.

Description

Technical Field

[0001] The invention belongs to the technical field of municipal engineering devices, and in particular relates to a manhole cover replacement machine. Background Art

[0002] Manhole covers are common ground facilities on municipal roads, green belts, docks, etc., used to cover the inspection entrances of underground water pipes, optical cables and other urban livelihood facilities. When the manhole cover is aging or damaged, it needs to be replaced with a new one in time to avoid major safety hazards to pedestrians and vehicles passing by.

[0003] At present, most inspection manhole cover replacement operations still rely on manual prying out the old manhole cover and then replacing it with a new one. The old manhole cover may be corroded for a long time and difficult to replace. Manual handling and replacement of the manhole cover is time-consuming, labor-intensive, and inefficient. In addition, there is a risk of being injured during the replacement process. Therefore, a manhole cover replacement device is urgently needed.

[0004] In addition, there are a small number of manhole cover replacement equipment on the market, but most of them have relatively simple functions and only have the function of pavement cutting. The removal of old manhole covers and the repair of manhole cover installation holes require the use of other equipment, which is labor-intensive and inefficient. A small number of manhole cover replacement equipment with a high degree of automation can complete pavement cutting, manhole seat lifting and loading operations, but a circular cutter disc is used for circumferential cutting of the pavement around the manhole cover. The incision is an envelope line, and there are problems such as insufficient cutting depth and easy damage of the cutter disc. When operating on hard mud roads, there are problems such as insufficient power and rigidity.

[0005] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a manhole cover replacement machine which can be used for manhole cover replacement operations on various road surfaces such as asphalt and concrete, and can complete the milling of the road surface, lifting of the manhole seat, formation of the manhole cover installation surface and loading of the manhole cover at one time, aiming to solve the problems of existing manhole cover replacement equipment such as insufficient cutting depth, easy damage of the cutter disc, and insufficient power and rigidity when operating on hard muddy roads.

[0007] The technical solution of the present invention is as follows:

[0008] A manhole cover replacement machine is used for replacing inspection manhole covers on a road surface, comprising: a frame, the frame comprising two or more hollow columns, and a movable mounting platform is provided between the columns;

[0009] A cutter head assembly for rotating and cutting the working surface is provided directly below the installation platform, and a breaking and clamping mechanism for breaking the well body masonry material and clamping the well seat is provided directly below the cutter head assembly, and the installation platform is connected to the breaking and clamping mechanism through a connecting rod that passes through the cutter head assembly;

[0010] A first driving mechanism is disposed on the top of any of the columns to enable the mounting platform to reciprocate in a vertical direction, and a second driving mechanism is disposed on the mounting platform to enable the cutter head assembly to rotate along the central axis.

[0011] Preferably, the breaking and clamping mechanism comprises: a fixed plate arranged at the end of the connecting rod, a first hydraulic cylinder is arranged on the fixed plate, and arc-shaped push heads for opening the well body masonry material in the horizontal direction are respectively arranged at both ends of the first hydraulic cylinder;

[0012] A second hydraulic cylinder is provided on the mounting platform, a guide rod is provided on one side of the second hydraulic cylinder, one end of the guide rod is connected to the connecting rod, and the second hydraulic cylinder pushes the other end of the guide rod to rotate the bursting and clamping mechanism 90 degrees;

[0013] A third hydraulic cylinder is arranged inside the connecting rod and is used for pushing the bursting and clamping mechanism to rise and fall in the vertical direction.

[0014] Preferably, the bottom of the bursting and clamping mechanism is detachably connected to a slag receiving pan through a vertical rod for receiving masonry materials dropped around the well body during operation.

[0015] Preferably, the edge of the slag receiving pan is made of an elastomeric material.

[0016] Preferably, a screw rod is fixedly provided in any of the columns, and the fulcrum of the mounting platform is connected to the screw rods in all the columns.

[0017] Preferably, the first driving mechanism comprises a first hydraulic motor, a reduction box connected to the first hydraulic motor, and the reduction box output shaft is connected to the screw rod via a spline;

[0018] At least one driving pulley is provided on the screw rod connected to the output shaft of the reduction box, and at least one driven pulley is provided on the remaining screw rods. The driving pulley is connected to the driven pulley through a synchronous belt.

[0019] At least one synchronous belt wheel is sleeved on the upper end of the screw rod, and each of the synchronous belt wheels is connected to the remaining screw rods through a synchronous belt.

[0020] Preferably, the second driving mechanism comprises a second hydraulic motor, a gear set connected to an output end of the second hydraulic motor, and a large gear of the gear set is coaxially connected to the bottom of the cutter head assembly.

[0021] Preferably, the cutter head assembly comprises a cylindrical portion, and a plurality of metal cutter heads welded on the circumference of the cylindrical portion at a certain angle.

[0022] Preferably, the manhole cover replacement machine further comprises a water spray system disposed on the mounting platform, and the water spray system comprises at least one spray pipe for cooling and removing dust from the cutter head assembly.

[0023] Preferably, a lifting ring for moving and positioning the manhole cover replacement machine is provided at the top of the frame.

[0024] Compared with the prior art, the manhole cover replacement machine provided in this application has the following beneficial effects:

[0025] (1) The manhole cover replacement equipment with a high degree of automation is convenient for efficient construction at different construction sites. It can complete the milling of the road surface, lifting of the manhole seat, formation of the manhole cover installation surface and loading of the manhole cover at one time, and prevent the masonry materials of the manhole body from falling into the manhole;

[0026] (2) The designed breaking and clamping mechanism has the function of trimming the installation hole of the manhole cover, and can effectively break the masonry material of the well body and clamp the manhole cover, with a high success rate of manhole cover extraction;

[0027] (3) The use of cylindrical cutter head components for road milling has fast cutting speed, sufficient cutting depth, and high tool durability;

[0028] (4) The overall structure of the manhole cover replacement equipment is relatively heavy and has strong power, which can achieve good cutting effect when working on hard cement pavement. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the manhole cover replacement machine in the present invention.

[0030] Figure 2 It is a top view of the overall structure of the manhole cover replacement machine in the embodiment of the present invention.

[0031] Figure 3 It is a structural schematic diagram of the bursting mechanism in the embodiment of the manhole cover replacement machine in the present invention.

[0032] Figure 4 yes Figure 1 Cross-sectional view along the AA direction.

[0033] Reference numerals:

[0034] 1-frame, 101-column, 2-screw rod, 3-second hydraulic cylinder, 4-water spray system, 5-installation platform, 6-second hydraulic cylinder, 7-cutter head assembly, 8-first hydraulic cylinder, 9-upright pole, 10-slag receiving plate, 11-lifting ring, 12-first driving mechanism, 1201-first hydraulic motor, 1202-reduction box, 1203-driving pulley, 1204-synchronous belt, 1205-driven pulley, 13-second driving mechanism, 1301-second hydraulic motor, 1302-gear set, 14-connecting rod, 15-well seat, 16-breaking and clamping mechanism, 1601-fixed plate, 1602-arc-shaped push head, 17-masonry material, 18-guide rod. DETAILED DESCRIPTION

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0036] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0037] like Figures 1 to 4 As shown, a manhole cover replacement machine provided in an embodiment of the present invention is used for replacing inspection manhole covers on a road surface, and includes: a frame 1, wherein the frame 1 includes two or more hollow columns 101, and a movable mounting platform 5 is provided between the columns 101. Considering the stability of the frame 1, the number of the columns 101 of the frame 1 is preferably three.

[0038] A cutter head assembly 7 for rotating and cutting the working surface is provided directly below the installation platform 5. A breaking and clamping mechanism 16 for breaking the well body masonry material 17 and clamping the well seat 15 is provided directly below the cutter head assembly 7. The installation platform 5 is connected to the breaking and clamping mechanism 16 via a connecting rod 14 that passes through the cutter head assembly 7.

[0039] A first driving mechanism 12 for reciprocating the mounting platform 5 in the vertical direction is disposed on the top of any of the columns 101, and a second driving mechanism 13 for rotating the cutter head assembly 7 along the central axis is disposed on the mounting platform 5. Furthermore, the driving mechanism includes not only a power source but also a series of transmission mechanisms.

[0040] like Figure 3 As shown, the breaking and clamping mechanism 16 comprises: a fixed plate 1601 arranged at the end of the connecting rod 14, a first hydraulic cylinder 8 is arranged on the fixed plate 1601, and arc-shaped push heads 1602 for opening the well body masonry material 17 in the horizontal direction are respectively arranged at both ends of the first hydraulic cylinder 8, and the arc-shaped push heads 1602 just contact the arc surface of the well body masonry material 17;

[0041] like Figure 4 As shown, the mounting platform 5 is provided with a second hydraulic cylinder 3, one side of the second hydraulic cylinder 3 is provided with a guide rod 18, one end of the guide rod 18 is connected to the connecting rod 14, and the second hydraulic cylinder pushes the other end of the guide rod 18 to rotate the bursting and clamping mechanism 16 by 90 degrees;

[0042] The connecting rod 14 is provided with a third hydraulic cylinder 6 for pushing the bursting and clamping mechanism 16 to rise and fall in the vertical direction.

[0043] It can be understood that the first hydraulic cylinder 8 controls the arc-shaped push head 1602 of the bursting and clamping mechanism 16 to extend and retract horizontally, so as to burst the masonry material 17 of the well body; the second hydraulic cylinder 3 causes the bursting and clamping mechanism 16 to rotate 90 degrees by pushing the guide rod 18, and continues to burst the masonry material 17 of the well body in another direction; the third hydraulic cylinder 6 pushes the bursting and clamping mechanism 16 up and down, completes the operation of the bursting and clamping mechanism 16 entering the well body, and extracts the action of the well seat 15 rising. Further, the hydraulic cylinders are all powered by an external hydraulic station (not shown in the figure), and the hydraulic cylinders can also be replaced by cylinders that can achieve the same effect.

[0044] The bottom of the bursting and clamping mechanism 16 is detachably connected to a slag receiving pan 10 through a vertical rod 9 for receiving masonry materials 18 dropped around the well body during operation. The rims of the slag receiving pan 10 are made of elastic material, preferably a rubber sheet, which can reduce the resistance to contact with the well body during movement.

[0045] The working principle of the manhole cover replacement machine is as follows: a first driving mechanism 12 is provided at the top of any column 101 to make the installation platform 5 reciprocate in the vertical direction, and a second driving mechanism 13 is provided on the installation platform 5 to make the cutter head assembly 7 rotate along the central axis. The driving mechanism controls the cutter head assembly 7 to cut a circle larger than the manhole seat on the working surface through rotation and up and down feeding movement; arc-shaped push heads 1602 are respectively provided at both ends of the first hydraulic cylinder 8 for opening the well body masonry material 17 in the horizontal direction, and the second hydraulic cylinder 3 pushes the other end of the guide rod 18 to rotate the breaking clamping mechanism 16 90 degrees, and the third hydraulic cylinder 6 pushes the breaking clamping mechanism 16 to rise and fall in the vertical direction. The hydraulic cylinder controls the breaking clamping mechanism 16 to complete the breaking of the well body masonry material 17, clamp the bottom of the manhole seat 15, and lift the manhole seat 15 to the ground level. The slag receiving plate 10 at the bottom of the bursting and clamping mechanism 16 receives the masonry materials 17 dropped around the well body during the operation, and rises together with the masonry materials to carry them out of the well body, thus completing a complete milling operation process of the original well cover.

[0046] In a further preferred embodiment of the present invention, a screw rod 2 is fixedly disposed in any of the columns 101 , and the fulcrum of the mounting platform 5 is connected to the screw rods 2 in all the columns 101 .

[0047] The first driving mechanism 12 includes a first hydraulic motor 1201, a reduction gearbox 1202 connected to the first hydraulic motor, and the output shaft of the reduction gearbox 1202 is connected to the screw rod 2 via a spline; at least one driving pulley 1203 is provided on the screw rod 2 connected to the output shaft of the reduction gearbox 1202, and at least one driven pulley 1205 is provided on the remaining screw rod, and the driving pulley 1203 is connected to the driven pulley 1205 via a synchronous belt 1204.

[0048] In a preferred embodiment of the present invention, a screw rod 2 is provided in each of the three columns 101, and two driving pulleys 1203 are provided on the screw rod 2, each of which is connected to a driven pulley 1205 on the remaining two screw rods 2 through a synchronous belt 1204, ensuring that the three screw rods 2 maintain synchronous movement under the action of the first driving mechanism 12.

[0049] The second driving mechanism 13 includes a second hydraulic motor 1301 and a gear set 1302 connected to an output end of the second hydraulic motor. The large gear of the gear set is coaxially connected to the bottom of the cutter head assembly 7 .

[0050] It can be understood that the power source of the driving mechanism can be the hydraulic motor in the best embodiment, or it can be replaced by a power source such as an electric motor. The transmission system such as the reduction gearbox, gear set, synchronous belt, and screw rod can be replaced by other mechanisms with similar transmission effects while being able to complete the above functions.

[0051] In a preferred embodiment of the present invention, the cutter head assembly 7 comprises a cylindrical portion and a plurality of metal cutter heads welded at a certain angle on the circumference of the cylindrical portion. A metal cover is mounted on the periphery of the cylindrical portion to prevent sand and gravel from splashing and injuring people when cutting the road surface.

[0052] The manhole cover replacement machine also includes a water spray system 4 disposed on the mounting platform 5, and the water spray system 4 includes at least one spray pipe for cooling and removing dust from the cutter head assembly 7. When the cutter head is working, the road surface is dusty, and water spraying can be used to reduce dust on the work site. On the other hand, when cutting at high speed, the cutter head generates a lot of heat, and timely water spraying can be used to cool it down, which is beneficial to prolonging the service life of the cutter head.

[0053] In a preferred embodiment of the present invention, a lifting ring 11 is provided at the top of the frame 1. The manhole cover replacement machine can be installed on a truck through lifting by a crane. The manhole cover replacement machine can be moved and positioned in time by loading and operating with a truck crane to complete efficient construction at different construction sites.

[0054] In summary, the manhole cover replacement machine provided by the present invention is used for replacing inspection manhole covers on the road surface, and includes: a frame, the frame includes two or more hollow columns, and a movable mounting platform is provided between the columns; a cutter head assembly for rotating the cutting working surface is provided directly below the mounting platform, and a breaking and clamping mechanism for breaking the well body masonry material and clamping the well seat is provided directly below the cutter head assembly, and the mounting platform is connected to the breaking and clamping mechanism through a connecting rod that passes through the cutter head assembly; a first driving mechanism that enables the mounting platform to reciprocate in the vertical direction is provided at the top of any of the columns, and a second driving mechanism that enables the cutter head assembly to rotate along the central axis is provided on the mounting platform, so that the driving mechanism controls the cutter head assembly A circle larger than the well seat is cut on the working road surface by rotation and up and down feeding movements; arc-shaped push heads are respectively arranged at both ends of the first hydraulic cylinder for stretching the well body masonry material in the horizontal direction, and the second hydraulic cylinder pushes the other end of the guide rod to rotate the said stretching and clamping mechanism 90 degrees, and the third hydraulic cylinder pushes the said stretching and clamping mechanism to rise and fall in the vertical direction, and then the stretching and clamping mechanism is controlled by the hydraulic cylinder to complete the stretching of the well body masonry material, clamp the bottom of the well seat, and lift the well seat to the ground level, which can complete the milling of the road surface, lifting of the well seat and loading of the manhole cover at one time, solving the problems of insufficient power and rigidity of the existing equipment when operating on harder cement roads, and has a large application scenario in municipal road construction.

[0055] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A manhole cover replacement machine, used for replacing inspection manhole covers on the road surface, characterized in that: include: A frame, the frame comprising two or more hollow columns, with a movable mounting platform provided between the columns; A cutter head assembly for rotating and cutting the working surface is provided directly below the installation platform. A breaking and clamping mechanism for breaking the well body masonry material and clamping the well seat, wherein the mounting platform is connected to the breaking and clamping mechanism via a connecting rod penetrating the cutter head assembly; A first driving mechanism is provided at the top of any of the columns to enable the mounting platform to reciprocate in the vertical direction, and a second driving mechanism is provided on the mounting platform to enable the cutter head assembly to rotate along the central axis; The bursting and clamping mechanism comprises: A fixed plate is arranged at the end of the connecting rod, and a first hydraulic cylinder is arranged on the fixed plate. Both ends of the first hydraulic cylinder are respectively provided with arc-shaped push heads for propping up the well body masonry material in the horizontal direction; A second hydraulic cylinder is provided on the mounting platform, a guide rod is provided on one side of the second hydraulic cylinder, one end of the guide rod is connected to the connecting rod, and the second hydraulic cylinder pushes the other end of the guide rod to rotate the bursting and clamping mechanism 90 degrees; A third hydraulic cylinder is provided in the connecting rod for pushing the bursting and clamping mechanism to rise and fall in the vertical direction; The first driving mechanism comprises: A first hydraulic motor, a reduction box connected to the first hydraulic motor, wherein an output shaft of the reduction box is connected to a lead screw via a spline; At least one driving pulley is provided on the screw connected to the output shaft of the reduction box, and at least one driven pulley is provided on the remaining screws, and the driving pulley is connected to the driven pulley through a synchronous belt; The second driving mechanism comprises a second hydraulic motor, a gear set connected to the output end of the second hydraulic motor, and a large gear of the gear set is coaxially connected to the bottom of the cutter head assembly; The manhole cover replacement machine also includes a water spray system disposed on the mounting platform, the water spray system including at least one spray pipe for cooling and removing dust from the cutter head assembly; The bottom of the bursting and clamping mechanism is detachably connected to a slag receiving pan for receiving the masonry materials dropped around the well body during the operation through a vertical rod.

2. The manhole cover replacement machine according to claim 1, characterized in that: The plate edge of the slag receiving plate is made of elastic material.

3. The manhole cover replacement machine according to claim 1, characterized in that: A screw rod is fixedly arranged in any of the columns, and the mounting platform is connected to the screw rods in all the columns.

4. The manhole cover replacement machine according to claim 3, characterized in that: The cutter head assembly comprises a cylindrical part and a plurality of metal cutter heads welded on the circumference of the cylindrical part at a certain angle.

5. The manhole cover replacement machine according to claim 1, characterized in that: A lifting ring for moving and positioning the manhole cover replacement machine is provided at the top of the frame.

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