A fixing device for municipal engineering road paving

Abstract

The present invention relates to a fixing device for municipal engineering road paving, aiming to solve the technical problem of low efficiency caused by inconvenient asphalt paving at the position of manholes during the paving process of current conventional asphalt roads. It includes a limit combination cover body, auxiliary rods, wire meshes, a support mechanism, an annular fixing mechanism, a locking mechanism and a driving mechanism. Through the setting of the annular fixing mechanism, the fixing device for municipal engineering road paving of the present invention can be effectively installed and connected with the manhole to maintain stability. At the same time, the wire meshes and auxiliary rods block the position of the manhole by the support mechanism, effectively reducing the situation of asphalt falling into the manhole during the pouring and smoothing process. At the same time, during the annular equidistant inclined movement and folding of multiple auxiliary rods, it is adapted to directly pass through during the driving process of the roller without the need to avoid, thereby effectively improving the paving efficiency of the asphalt road.

Description

Technical Field

[0001] The present invention relates to the technical field of municipal engineering, and in particular to a fixing device for laying a municipal engineering road. Background Art

[0002] In China, municipal infrastructure refers to various buildings, structures, equipment, etc. that are set within the planning and construction scope of urban areas, towns (townships), and are based on the responsibilities and obligations of the government to provide residents with paid or free public products and services. The construction of various public infrastructure supporting urban life belongs to the category of municipal engineering; during the asphalt road laying process, a cylindrical metal isolation device is often used to limit and isolate the position of manholes in the road, or during the process of pouring and leveling asphalt and rolling by a roller, the position of the manhole and its surrounding area are deliberately avoided directly. During the asphalt laying process, the roller is used to vibrate the asphalt for laying work. The metal isolation device is higher than the height of the conventional asphalt layer to prevent asphalt from falling into the manhole during pouring, leveling, and rolling processes. However, during the driving process of the roller, the position of the manhole is avoided to prevent extrusion damage to the metal isolation device, which then leads to the need for manual laying around the position of the manhole, resulting in slow laying of the asphalt section. Therefore, it is particularly important to propose a fixing device with an anti-falling function to limit and fix asphalt laying while also being adaptable to the laying operation of the roller. In view of this, we propose a fixing device for laying a municipal engineering road. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, adapt to the actual needs, and provide a fixing device for laying a municipal engineering road to solve the technical problem of inconvenient asphalt laying at the manhole position and low efficiency during the current conventional asphalt road laying process.

[0004] To achieve the object of the present invention, the technical solution adopted by the present invention is as follows: Design a fixing device for municipal engineering road paving, including a limit combination cover body, auxiliary rods, a wire mesh, a support mechanism, an annular fixing mechanism, a locking mechanism and a driving mechanism; A number of auxiliary rods are annularly and equidistantly hinged to the upper end of the limit combination cover body; Among them, a wire mesh is arranged between two adjacent auxiliary rods; The support mechanism is arranged below the auxiliary rods to connect the limit combination cover body; The annular fixing mechanism is arranged at the lower end of the limit combination cover body; A number of locking mechanisms are annularly and equidistantly arranged on the limit combination cover body; The driving mechanism is arranged at the upper end of the locking mechanism; Among them, the auxiliary rods, the wire mesh and the limit combination cover body, the support mechanism, the annular fixing mechanism, the locking mechanism and the driving mechanism constitute a center-fixed movable shielding structure; The limit combination cover body is composed of an upper cover body and a lower cover body; Among them, the bottom of the lower cover body is annularly and equidistantly provided with sliding grooves; And, an installation convex block is arranged on one side of the lower cover body relative to the sliding groove; A self-locking adjustment cavity is intermittently formed inside the installation convex block; Among them, the self-locking adjustment cavity is composed of a locking groove and a movable groove; And, the locking groove is in the shape of being narrow at the top and wide at the bottom; And, a number of meshing protrusions A are annularly and equidistantly arranged on the locking groove; The annular fixing mechanism includes: A main driving gear disk, arranged on the lower cover body; And, a number of arc-shaped grooves are annularly and equidistantly formed on the surface of the main driving gear disk; A number of fixed connecting rods, passing through the sliding grooves and extending outside the sliding grooves to connect the main driving gear disk; Among them, a driving protrusion is fixedly arranged on the surface of the fixed connecting rod; Among them, the driving protrusion is slidably matched with the arc-shaped groove; The locking mechanism includes: A number of locking driving shaft rods, passing through the installation convex block; Among them, the locking driving shaft rod is composed of a locking shaft and a driving gear disk block; Among them, a meshing protrusion B with a shape adapted to that of the meshing protrusion A is arranged on the outer wall of the locking shaft; Among them, the driving gear disk block is meshed and connected with the main driving gear disk; And, the axial movement distance of the driving gear disk block is adapted to the height of the main driving gear disk; Among them, a clamping groove is formed at the top of the driving gear disk block; An elastic member, sleeved on the locking shaft; And, the upper end of the elastic member is movably connected with the locking shaft, and the lower end of the elastic member is fixedly connected with the locking shaft. Among them, the locking driving shaft rod is elastically connected with the installation convex block through the elastic member.The present invention enables the municipal engineering road paving fixing device to be effectively installed and connected to the manhole through the setting of the annular fixing mechanism, maintaining stability. At the same time, the wire mesh and the auxiliary rods block the position of the manhole in the support mechanism, effectively reducing the situation of falling into the manhole during the process of pouring and leveling asphalt. Meanwhile, during the annular equidistant inclined movement and folding of multiple auxiliary rods, it is adapted to directly pass through during the driving process of the roller without the need for avoidance, thereby effectively improving the paving efficiency of the asphalt road. Through the setting of the self-locking adjustment cavity, the locking mechanism can freely engage with the locking groove or be adjusted into the moving groove, forming two states of driving engagement and self-locking engagement to adapt to the clamping adjustment and stable connection of the manhole as required. Through the combined use of the driving mechanism and the locking mechanism, the main driving gear disc is driven to rotate. Under the guiding action of the sliding groove, it is adapted to the sliding fit of the driving protrusion and the arc groove, causing multiple fixed connecting rods to expand synchronously and equidistantly in a ring to tightly fit against the inner wall of the manhole, forming a stable connection measure, enabling the limit combination cover body to be connected to the position of the manhole, and avoiding the situation that the squeezing force during the roller's advancement causes the deviation of the municipal engineering road paving fixing device, affecting the basic road paving work. Through the high end of the elastic member being rigidly connected to the bottom of the limit combination cover body through the bearing seat, but the elastic member can rotate under the action of the bearing seat. Using the tensile force of the elastic member, the locking drive shaft rod moves upward as a whole, causing the engaging protrusion A to engage with the engaging protrusion B, forming a locking effect on the main driving gear disc and avoiding the loosening of the fixed connecting rod.

[0005] Preferably, the limit combination cover body has an inverted convex character structure. Among them, an operation cavity is provided inside the limit combination cover body, and the operation cavity is a polygonal structure. The present invention can effectively adapt to the guiding connection of the driving mechanism through the polygonal operation cavity, improving the installation and use efficiency of the driving mechanism.

[0006] Preferably, the moving groove is cylindrical, and the cross-sectional diameter of the moving groove is larger than the cross-sectional diameter of the bottom of the locking groove. Among them, the heights of the locking groove and the moving groove are adapted to each other.

[0007] Preferably, the auxiliary rod is in a Z shape and is inclined and hinged to the high end of the limit combination cover body. Among them, several of the auxiliary rods are connected in a lap-joint manner in sequence. Through the lap-joint connection and hinged setting of several of the auxiliary rods in sequence, the multiple auxiliary rods form a linkage cooperation. While performing the basic blocking work, it is adapted to the synchronous contraction and folding of several auxiliary rods and the wire mesh during the advancement of the roller, effectively avoiding the situation that the advancement operation of the roller causes rolling damage to the municipal engineering road paving fixing device. As a result, the roller can simultaneously perform rolling operations on the asphalt at the manhole position for road paving, optimizing the conventional operation of avoiding the asphalt around the manhole and effectively improving the paving efficiency.

[0008] Preferably, the support mechanism includes a base, a telescopic shaft, a lifting seat and a spring; the base is in a ring structure and is fixedly arranged in the upper cover body; a plurality of telescopic shafts are arranged on the base at equal intervals in a ring shape; the lifting seat is arranged at the upper end of the base and is connected to the telescopic shaft; wherein, the lifting seat is fixedly connected to the movable end of the telescopic shaft; and, the base is elastically connected to the lifting seat through a spring. In the present invention, the spring elastically supports the base and the lifting seat, so that the lifting seat jacks up multiple auxiliary rods, causing the ends of the auxiliary rods and the wire mesh to be relatively jacked up, higher than the upper edge of the limit combination cover body, thereby effectively shielding and protecting the manhole position, and reducing the situation that asphalt is likely to fall into the manhole during the process of pouring and leveling asphalt.

[0009] Preferably, the main drive gear disk is movably connected to the lower cover body.

[0010] Preferably, the drive mechanism includes a connecting frame, a main drive wheel and a driven wheel; the connecting frame is arranged at the upper end of the main drive gear disk; wherein, the transverse frame of the connecting frame is adapted to the shape of the operation cavity; the main drive wheel is arranged on the transverse frame of the connecting frame through a motor; wherein, the main drive wheel is located at the center position of the transverse frame of the connecting frame; a plurality of driven wheels are arranged on the surface of the transverse frame of the connecting frame; and, clamping protrusions are arranged at the bottoms of the driven wheels arranged oppositely on the outer side of the transverse frame of the connecting frame; wherein, the main drive wheel and the plurality of driven wheels are frictionally driven by a belt. In the present invention, the belt is sequentially wound around the main drive wheel and the driven wheels, so that the transverse frame of the connecting frame can be adapted to the shape of the operation cavity, and the main drive wheel is driven by a motor to cause belt transmission, so that the plurality of driven wheels rotate synchronously and in the same direction. The driven wheels with clamping protrusions on the outer side of the transverse frame of the connecting frame are used to dock and clamp with the top slots of the drive gear disk blocks through the clamping protrusions, and under the weight of the drive mechanism, the locking mechanism is pressed, so that the engaging protrusion A and the engaging protrusion B are separated, and at the same time, the locking mechanism is rotated by the rotation of the clamping protrusions to cause the plurality of fixed connecting rods to expand and contract.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. Through the setting of the annular fixing mechanism, the municipal engineering road paving fixing device of the present invention can be effectively installed and connected with the manhole to maintain stability. At the same time, the wire mesh and the auxiliary rods shield the manhole position by the support mechanism, effectively reducing the situation of falling into the manhole during the process of pouring and leveling asphalt. At the same time, during the annular equal-spacing inclined activity folding of the plurality of auxiliary rods, it is adapted to directly pass through during the driving process of the roller without avoidance, thereby effectively improving the paving efficiency of the asphalt road.

[0013] 2. The present invention overlaps and connects the auxiliary rods in sequence and is hingedly arranged, so that the multiple auxiliary rods form a linkage. While the basic shielding work is being carried out, the multiple auxiliary rods and the wire mesh are adapted to be synchronously contracted and folded during the movement of the roller, effectively avoiding the situation where the road paving fixture of the municipal engineering project is crushed and damaged by the movement of the roller, so that the roller can simultaneously perform the rolling operation on the asphalt at the manhole position to pave the road, optimize the conventional operation of avoiding asphalt around the manhole, and effectively improve the paving efficiency.

[0014] 3. The present invention uses a spring to elastically support the base and the supporting seat, so that the supporting seat lifts the basic structure of multiple auxiliary rods, so that the ends of the auxiliary rods and the wire mesh are relatively lifted and higher than the upper edge of the limiting combination cover, thereby effectively shielding and protecting the manhole position, and reducing the risk of asphalt falling into the manhole during the asphalt pouring and leveling process.

[0015] 4. The present invention drives the main drive gear disc to rotate by cooperating with the driving mechanism and the locking mechanism. Under the guidance of the slide groove, the adaptive driving protrusion slides with the arc groove, causing multiple fixed connecting rods to be synchronously and equidistantly deployed in a ring to fit the inner wall of the manhole tightly, forming a stable connection measure, so that the limit combination cover is connected to the manhole position, avoiding the situation where the municipal engineering road paving fixture is offset due to the extrusion force during the movement of the roller, affecting the basic road paving work

[0016] 5. In the present invention, the high end of the elastic member is rigidly connected to the bottom of the limit combination cover through the bearing seat, but the elastic member can rotate under the action of the bearing seat. The elastic force of the elastic member is used to cause the locking drive shaft to move upward as a whole, so that the engaging protrusion A is engaged with the engaging protrusion B, forming a locking effect on the main drive gear disc, thereby preventing the fixed connecting rod from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the installation structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0019] Figure 3 Schematic diagram of the cross-sectional structure of the position-limiting combined cover body and the supporting mechanism in the present invention;

[0020] Figure 4 Schematic diagram of the three-dimensional structure of the annular fixing mechanism in the present invention;

[0021] Figure 5 Schematic diagram of the installation and cross-sectional structure of the locking mechanism in the present invention;

[0022] Figure 6Schematic diagram of the three-dimensional structure of the lower cover body and the cross-section of the installation bump in the present invention;

[0023] Figure 7 Schematic diagram of the three-dimensional structure of the driving mechanism in the present invention.

[0024] In the figure: 1, limit combination cover body; 2, auxiliary rod; 3, wire mesh; 4, support mechanism; 5, annular fixing mechanism; 6, locking mechanism; 7, driving mechanism;

[0025] 101, upper cover body; 102, lower cover body; 1021, installation bump;

[0026] 401, base; 402, telescopic shaft; 403, lifting seat; 404, spring;

[0027] 501, main driving gear disk; 502, fixed connecting rod;

[0028] 601, locking driving shaft rod; 6011, locking shaft; 6012, driving gear disk block; 602, elastic member;

[0029] 701, connecting frame; 702, main driving wheel; 703, driven wheel. Specific embodiments

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0031] A fixing device for municipal engineering road paving, see Figures 1 to 7 , including a limit combination cover body 1, an auxiliary rod 2, a wire mesh 3, a support mechanism 4, an annular fixing mechanism 5, a locking mechanism 6 and a driving mechanism 7; a plurality of auxiliary rods 2 are annularly and equidistantly hinged to the high end of the limit combination cover body 1; among them, a wire mesh 3 is arranged between two adjacent auxiliary rods 2; the support mechanism 4 is arranged below the auxiliary rod 2 to connect the limit combination cover body 1; the annular fixing mechanism 5 is arranged at the low end of the limit combination cover body 1; a plurality of locking mechanisms 6 are annularly and equidistantly arranged on the limit combination cover body 1; the driving mechanism 7 is arranged at the upper end of the locking mechanism 6; among them, the auxiliary rod 2, the wire mesh 3 and the limit combination cover body 1, the support mechanism 4, the annular fixing mechanism 5, the locking mechanism 6 and the driving mechanism 7 form a center-fixed movable shielding structure. Through the setting of the annular fixing mechanism 5 in the present invention, the fixing device for municipal engineering road paving can be effectively installed and connected with the manhole, maintaining stability. At the same time, the wire mesh 3 and the auxiliary rod 2 shield the position of the manhole by the support mechanism 4, effectively reducing the situation of falling into the manhole during the process of pouring and leveling asphalt. At the same time, during the annular and equidistant inclined movable folding of a plurality of auxiliary rods 2, it is adapted to directly pass through during the driving process of the roller without avoiding, thereby effectively improving the paving efficiency of the asphalt road.

[0032] Specifically, the limit combination cover 1 has an inverted convex character structure; among them, an operation cavity is provided inside the limit combination cover 1; and the operation cavity is a polygonal structure. In the present invention, the operation cavity with a polygonal structure can effectively adapt to the guiding connection of the driving mechanism 7, improving the installation and use efficiency of the driving mechanism 7.

[0033] Furthermore, the limit combination cover 1 is composed of an upper cover 101 and a lower cover 102; among them, a plurality of chutes are provided at equal intervals in a circular shape at the bottom of the lower cover 102; and an installation convex block 1021 is provided on one side of the lower cover 102 opposite to the chute; among them, a self-locking adjustment cavity is intermittently formed inside the installation convex block 1021; the self-locking adjustment cavity is composed of a locking groove and a movable groove; and the locking groove is narrow at the top and wide at the bottom; and a number of meshing protrusions A are arranged at equal intervals in a circular shape in the locking groove; the movable groove is cylindrical; and the cross-sectional diameter of the movable groove is larger than the cross-sectional diameter of the bottom of the locking groove; the heights of the locking groove and the movable groove are adapted to each other. In the present invention, through the setting of the self-locking adjustment cavity, the locking mechanism 6 can freely engage with the locking groove or be adjusted into the movable groove, forming two states of driving engagement and self-locking engagement, so as to adapt to the clamping adjustment and stable connection of the manhole required.

[0034] Still further, the auxiliary rod 2 is in a Z shape; and the auxiliary rod 2 is inclined and hinged to the high end of the limit combination cover 1; a number of auxiliary rods 2 are sequentially lapped and connected. In the present invention, through the sequential lapping connection and hinged setting of a number of auxiliary rods 2, the plurality of auxiliary rods 2 form a linkage cooperation. While performing the basic shielding work, it adapts to the synchronous contraction and folding of a number of auxiliary rods 2 and the wire mesh 3 during the progress of the roller, effectively avoiding the situation that the roller causes rolling damage to the municipal engineering road paving fixing device during the progress operation, so that the roller can simultaneously perform rolling operation on the asphalt at the manhole position for road paving, optimizing the conventional operation of avoiding the asphalt around the manhole, and effectively improving the paving efficiency.

[0035] It should be noted that the support mechanism 4 includes a base 401, a telescopic shaft 402, a lifting seat 403 and a spring 404; the base 401 is fixedly arranged in the upper cover 101 in a circular structure; a number of telescopic shafts 402 are arranged at equal intervals in a circular shape on the base 401; the lifting seat 403 is arranged at the upper end of the base 401 and connected to the telescopic shaft 402; among them, the lifting seat 403 is fixedly connected to the movable end of the telescopic shaft 402; and the base 401 is elastically connected to the lifting seat 403 through the spring 404. In the present invention, through the elastic supporting effect of the spring 404 on the base 401 and the lifting seat 403, the lifting seat 403 performs basic jacking on a number of auxiliary rods 2, so that the ends of the auxiliary rods 2 and the wire mesh 3 are relatively jacked up, higher than the upper edge of the limit combination cover 1, thereby effectively shielding and protecting the manhole position, and reducing the situation that the asphalt is easily dropped into the manhole during the process of pouring and smoothing the asphalt.

[0036] It should be noted that the annular fixing mechanism 5 includes a main driving gear disk 501 and fixing connecting rods 502; the main driving gear disk 501 is arranged on the lower cover body 102; wherein, the main driving gear disk 501 is movably connected to the lower cover body 102; and, a number of arc-shaped grooves are equidistantly arranged in a ring shape on the surface of the main driving gear disk 501; a number of fixing connecting rods 502 are arranged to pass through the sliding grooves and extend to the outside of the sliding grooves to connect the main driving gear disk 501; wherein, driving protrusions are fixedly arranged on the surface of the fixing connecting rods 502; wherein, the driving protrusions are in sliding fit with the arc-shaped grooves. Through the combined use of the driving mechanism 7 and the locking mechanism 6, the present invention drives the main driving gear disk 501 to rotate. Under the guiding action of the sliding grooves, the driving protrusions are adapted to slide fit with the arc-shaped grooves, causing the multiple fixing connecting rods 502 to expand synchronously and equidistantly in a ring shape to fit and press tightly against the inner wall of the manhole, forming a stable connection measure, so that the limiting combined cover body 1 is connected to the position of the manhole, avoiding the situation that the squeezing force during the progress of the roller causes the offset of the municipal engineering road paving fixing device, which affects the basic road paving work.

[0037] It is worth introducing that the locking mechanism 6 includes a locking drive shaft rod 601 and an elastic member 602; a number of locking drive shaft rods 601 are arranged to pass through the mounting convex block 1021; wherein, the locking drive shaft rod 601 is composed of a locking shaft 6011 and a driving gear disk block 6012; wherein, a meshing protrusion B adapted to the shape of the meshing protrusion A is arranged on the outer wall of the locking shaft 6011; wherein, the driving gear disk block 6012 is meshed and connected to the main driving gear disk 501; and, the axial movement distance of the driving gear disk block 6012 is adapted to the height of the main driving gear disk 501; wherein, a card slot is opened at the top of the driving gear disk block 6012; the elastic member 602 is sleeved on the locking shaft 6011; and, the high end of the elastic member 602 is movably connected to the locking shaft 6011, and the low end of the elastic member 602 is fixedly connected to the locking shaft 6011. Among them, the locking drive shaft rod 601 is elastically connected to the mounting convex block 1021 through the elastic member 602. In the present invention, the high end of the elastic member 602 is rigidly connected to the bottom of the limiting combined cover body 1 through a bearing seat, but the elastic member 602 can rotate under the action of the bearing seat. By using the tensile force of the elastic member 602, the whole locking drive shaft rod 601 moves upward, enabling the meshing protrusion A and the meshing protrusion B to be meshed, forming a locking effect on the main driving gear disk 501 and avoiding the loosening of the fixing connecting rods 502.

[0038] It should be emphasized that the driving mechanism 7 includes a connecting frame 701, a main driving wheel 702 and a driven wheel 703; the connecting frame 701 is arranged at the upper end of the main driving gear disc 501; wherein, the connecting frame 701 is horizontally arranged to be adapted to the shape of the operation cavity; the main driving wheel 702 is arranged on the horizontal frame of the connecting frame 701 through a motor; wherein, the main driving wheel 702 is located at the center position of the horizontal frame of the connecting frame 701; a plurality of driven wheels 703 are arranged on the surface of the horizontal frame of the connecting frame 701; and clamping protrusions are arranged at the bottoms of the driven wheels 703 oppositely arranged on the outer side of the horizontal frame of the connecting frame 701; wherein, the main driving wheel 702 and the plurality of driven wheels 703 are friction-driven by a belt. In the present invention, the belt is sequentially wound around the main driving wheel 702 and the driven wheels 703, so that the horizontal frame of the connecting frame 701 can be adapted to the shape of the operation cavity, and the motor is used to drive the main driving wheel 702 to cause belt transmission, so that the plurality of driven wheels 703 rotate synchronously and in the same direction. The driven wheel 703 with a clamping protrusion on the outer side of the horizontal frame of the connecting frame 701 is used to be butt-jointed and clamped with the top card slot of the driving gear block 6012 through the clamping protrusion, and under the weight of the driving mechanism 7, the locking mechanism 6 is pressed, so that the engaging protrusion A and the engaging protrusion B are separated, and at the same time, the clamping protrusion is used to rotate and drive the locking mechanism 6 to rotate, causing the plurality of fixed connecting rods 502 to perform telescopic movement.

[0039] Working principle: First, as Figure 1As shown, the limit combination cover body 1, auxiliary rod 2, wire mesh 3, supporting mechanism 4, annular fixing mechanism 5 and locking mechanism 6 are placed as a whole in the manhole position, wherein the wire mesh 3 is foldable in an irregular manner, and then the auxiliary rod 2 and wire mesh 3 are manually moved to unfold downward, and then the driving mechanism 7 is placed so that the engaging protrusion is aligned with the card slot; under the weight of the driving mechanism 7, the locking mechanism 6 is pressed to separate the engaging protrusion A and the engaging protrusion B, and then the main driving wheel 702 is driven by the motor to cause the belt transmission, so that the multiple The driven wheels 703 rotate synchronously and in the same direction, so that the locking mechanism 6 synchronously drives the main driving gear disc 501 to rotate. Under the guidance of the slide groove, the adaptive driving protrusion and the arc groove slide together, causing multiple fixed connecting rods 502 to work synchronously and equidistantly in an annular manner to fit tightly against the inner wall of the manhole. Then the driving mechanism 7 is removed, and the elastic member 602 stretches the elastic force to cause the locking driving shaft 601 to move upward as a whole, so that the meshing protrusion A meshes with the meshing protrusion B, forming a locking effect on the main driving gear disc 501, and then manually The auxiliary rods 2 are overlapped and connected in sequence, and the base 401 and the supporting seat 403 are elastically supported by the spring 404. During the pouring and smoothing process, manual attention should be paid to the position of the manhole in the asphalt. The setting of the auxiliary rods 2 and the wire mesh 3 can effectively reduce the asphalt from falling into the manhole. After the pouring and smoothing is completed, there is a small amount of asphalt on the auxiliary rods 2 and the wire mesh 3. Then the road asphalt is rolled by the roller. When it reaches the manhole position, the roller contacts the auxiliary rods 2 and the wire mesh 3. Several auxiliary rods 2 and the wire mesh 3 are synchronously contracted and folded to a position relatively below the limit. The upper edge of the combined cover 1 is horizontal, which effectively prevents the municipal engineering road paving fixture from being crushed and damaged by the roller's movement, and the auxiliary rod 2 and the wire mesh 3 are supported by the supporting seat 403. At this time, the roller and the supporting seat 403 limit the asphalt on the auxiliary rod 2 and the wire mesh 3 to prevent the auxiliary rod 2 and the wire mesh 3 from falling into the manhole during the dumping and leveling process. At the same time, the elastic movement of the supporting seat 403 effectively prevents the roller's rolling vibration from tightly adhering to the asphalt and the wire mesh 3, reducing the difficulty of cleaning.

[0040] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A fixing device for municipal engineering road paving, characterized in that, Including: A limit combination cover body (1); A plurality of auxiliary rods (2), which are annularly and equidistantly hinged to the upper end of the limit combination cover body (1); Wherein, a wire mesh (3) is arranged between two adjacent auxiliary rods (2); A support mechanism (4), which is arranged below the auxiliary rods (2) and connected to the limit combination cover body (1); An annular fixing mechanism (5), which is arranged at the lower end of the limit combination cover body (1); A plurality of locking mechanisms (6), which are annularly and equidistantly arranged on the limit combination cover body (1); A driving mechanism (7), which is arranged at the upper end of the locking mechanism (6); Wherein, the auxiliary rods (2), the wire mesh (3), the limit combination cover body (1), the support mechanism (4), the annular fixing mechanism (5), the locking mechanism (6) and the driving mechanism (7) form a center-fixed type movable shielding structure; The limit combination cover body (1) is composed of an upper cover body (101) and a lower cover body (102); wherein, the bottom of the lower cover body (102) is annularly and equidistantly provided with sliding grooves; and, an installation convex block (1021) is arranged on one side of the lower cover body (102) relative to the sliding grooves; a self-locking adjustment cavity is intermittently formed inside the installation convex block (1021); wherein, the self-locking adjustment cavity is composed of a locking groove and a movable groove; and, the locking groove is narrow at the top and wide at the bottom; and, a plurality of meshing protrusions A are annularly and equidistantly arranged in the locking groove; The annular fixing mechanism (5) includes: a main driving gear disc (501), which is arranged on the lower cover body (102); and, a plurality of arc grooves are annularly and equidistantly formed on the surface of the main driving gear disc (501); a plurality of fixing connecting rods (502), which pass through the sliding grooves and extend to the outside of the sliding grooves to connect the main driving gear disc (501); wherein, a driving protrusion is fixedly arranged on the surface of the fixing connecting rod (502); wherein, the driving protrusion is in sliding fit with the arc groove; The locking mechanism (6) includes: a plurality of locking driving shaft rods (601), which pass through the installation convex block (1021); wherein, the locking driving shaft rod (601) is composed of a locking shaft (6011) and a driving gear disc block (6012); wherein, a meshing protrusion B with a shape adapted to that of the meshing protrusion A is arranged on the outer wall of the locking shaft (6011); wherein, the driving gear disc block (6012) is meshed and connected with the main driving gear disc (501); and, the axial movement distance of the driving gear disc block (6012) is adapted to the height of the main driving gear disc (501); wherein, a clamping groove is formed at the top of the driving gear disc block (6012); an elastic member (602), which is sleeved on the locking shaft (6011); and, the upper end of the elastic member (602) is movably connected to the locking shaft (6011), and the lower end of the elastic member (602) is fixedly connected to the locking shaft (6011), wherein, the locking driving shaft rod (601) is elastically connected to the installation convex block (1021) through the elastic member (602).

2. The municipal engineering road paving fixing device according to claim 1, characterized in that, The limiting combined cover body (1) has an inverted convex character structure; wherein, an operation cavity is formed inside the limiting combined cover body (1); and, the operation cavity is a polygonal structure.

3. The municipal engineering road paving fixture as claimed in claim 2, characterized in that: The movable groove is cylindrical; and, the cross-sectional diameter of the movable groove is larger than the cross-sectional diameter of the bottom of the locking groove; wherein, the heights of the locking groove and the movable groove are adapted to each other.

4. The municipal engineering road paving fixing device according to claim 3, characterized in that, The auxiliary rod (2) is Z-shaped; and, the auxiliary rod (2) is inclined and hinged to the high end of the limiting combined cover body (1); wherein, a plurality of the auxiliary rods (2) are connected in a lapping manner in sequence.

5. The municipal engineering road paving fixing device according to claim 4, characterized in that, The support mechanism (4) includes: A base (401), which is fixedly arranged in the upper cover body (101) in an annular structure; A plurality of telescopic shafts (402), which are arranged on the base (401) at equal intervals in a circular shape; A lifting seat (403), which is arranged at the upper end of the base (401) and connected to the telescopic shafts (402); Wherein, the lifting seat (403) is fixedly connected to the movable ends of the telescopic shafts (402); And, the base (401) is elastically connected to the lifting seat (403) through a spring (404).

6. The municipal engineering road paving fixing device according to claim 5, characterized in that, The main driving gear disc (501) is movably connected to the lower cover body (102).

7. The municipal engineering road paving fixing device according to claim 6, wherein, The driving mechanism (7) includes: A connecting frame (701), which is arranged at the upper end of the main driving gear disc (501); Wherein, the cross frame of the connecting frame (701) is adapted to the shape of the operation cavity; A main driving wheel (702), which is arranged on the cross frame of the connecting frame (701) through a motor; Wherein, the main driving wheel (702) is located at the central position of the cross frame of the connecting frame (701); A plurality of driven wheels (703), which are arranged on the surface of the cross frame of the connecting frame (701); And, clamping protrusions are arranged at the bottoms of the driven wheels (703) oppositely arranged on the outer side of the cross frame of the connecting frame (701); Wherein, the main driving wheel (702) and the plurality of driven wheels (703) are frictionally driven by a belt.

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