CN109853334B - A mobile gravel spreader for bridge deck pavement - Google Patents

Abstract

The invention discloses a movable stone spreader for bridge deck pavement, which comprises: the device comprises a bracket, a guide rail and a spreader; wherein guide rails are transversely arranged between the brackets; the spreader is assembled on the guide rail in a sliding way through a sliding mechanism; the spreader comprises a fixed frame, a hopper bin, a spreading roller and a first motor; a hopper bin is arranged on the fixing frame, a control discharging device is arranged at the bottom end of the hopper bin, and a sliding mechanism is arranged at the upper end of the hopper bin; and a material scattering roller is arranged below the hopper bin, and a rotating shaft of the material scattering roller is connected with an output shaft of the first motor through a bevel gear meshed with each other. This portable rubble spreader for bridge deck pavement simple structure through the mutually supporting of main regulating plate and fine setting board, can be according to the spreading volume of actual demand control building stones, can adjust the position of spreader through second driving motor and slide mechanism simultaneously, has improved the spreading efficiency of bridge deck pavement layer rubble, and degree of automation is high, convenient to use, labour saving and time saving, reliable operation, low price is fit for extensive popularization.

Description

A mobile gravel spreader for bridge deck pavement

technical field

The invention relates to the field of bridge deck concrete paving and construction devices, in particular to a mobile gravel spreader for bridge deck paving.

Background technique

In recent years, with the rapid development of my country's high-speed roads, a large number of highway bridges have been built. However, during the use of the bridge, the problems exposed are becoming more and more prominent. For example, with the increase of the service life, the defects of the bridge deck pavement and the bridge structure itself are becoming more and more obvious during the use. The problem of water damage on the upper part of bridges has attracted more and more attention of bridge workers. At present, water damage has become the most noticeable early damage after the expressway is opened to traffic. Water damage is more prominent in many expressways in our country, especially in rainy and humid areas. Among them, the bridge deck damage caused by bridge deck waterproof defects is the most serious. It mainly includes relative shear slippage, cracking, delamination and loosening caused by hydrodynamic pressure erosion after rainwater infiltration due to insufficient adhesion of bridge deck pavement and beam body, waterproof adhesive layer and asphalt layer. and potholes. In addition, due to the infiltration of rainwater into the beam body, the steel bar of the beam body will be corroded, carbonized, and the concrete protective layer will be frozen and heaved, which will greatly reduce the service life of the concrete bridge and pavement.

Excellent interface treatment can ensure the effective bonding, shear resistance, stress absorption and waterproof functions between the bridge deck asphalt pavement and the bridge deck. The interface treatment includes the treatment of the bridge deck and the selection of the waterproof bonding layer. At present, more attention is paid to the selection of waterproof bonding materials. A lot of related scientific research work has been carried out in China and some research results have been obtained. The treatment method of the bridge deck has not received enough attention. In fact, the pretreatment method of the bridge deck and the interface The choice of waterproof bonding material plays an equally important role in the performance of the entire pavement structure.

Before the construction of the bridge deck pavement, the top of the beam slab was not cleaned thoroughly, the effect of chiseling and brushing the beam slab was poor, the laitance, mud, oil stains and loose concrete on the surface were not cleaned cleanly, and the surface of the main beam was not chiseled or roughened Insufficient density and depth, lack of welding between bridge deck pavement steel bars and beam body pre-embedded steel bars, etc., all seriously affect the bonding force between bridge deck pavement layer and beam top concrete, and destroy the integrity of cement concrete. Under the repeated action of vehicle load and water intrusion, the bridge deck pavement is prone to cracking and loosening.

Most of the surface roughness treatment of concrete bridge decks in our country still uses traditional techniques, mainly including: chiseling method, roughening method, notching method and so on. Although the traditional interface treatment method is helpful to improve the surface roughness of the bridge deck, it generally has problems such as poor bonding effect with the asphalt pavement layer, and water damage is prone to occur when water enters. In addition, these treatment processes generally have the disadvantages of high labor intensity, low efficiency, and large disturbance to the bridge structure; during construction, dust is flying, and the working conditions are bad, which is not conducive to environmental protection. Therefore, the traditional interface treatment process must be improved.

In the prior art, a stone planter is also used for interface treatment. Although it has a good treatment effect, it cannot control the amount of stone spreading, resulting in problems such as poor spreading uniformity, and the spreading position is limited, so it cannot be applied to large-area cement concrete bridges. surface layer.

Contents of the invention

In order to solve the above problems, the present invention provides a mobile gravel spreader for bridge deck pavement. The mobile gravel spreader for bridge deck pavement has a simple structure and can be adjusted according to The actual demand controls the amount of stone spreading, and at the same time, the position of the spreader can be adjusted through the second drive motor and sliding mechanism, which improves the spreading efficiency of the gravel on the bridge deck pavement layer. It has a high degree of automation, is easy to use, saves time and effort, and works reliably. , low price, suitable for large-scale promotion.

In order to achieve the above object, the present invention adopts the following technical solutions.

A mobile gravel spreader for bridge deck, comprising: brackets, guide rails and a spreader; wherein, guide rails are arranged transversely between the supports; the spreader is slidably assembled on the guide rails through a sliding mechanism; The spreader includes a frame, a hopper, a spreading roller and a first motor; the frame is provided with a hopper, the bottom of the hopper is provided with a discharge control device, and the upper end of the hopper is provided with a There is a sliding mechanism; a spreading roller is arranged below the hopper, and the rotating shaft of the spreading roller is connected to the output shaft of the first motor through mutually meshing bevel gears.

According to the mobile gravel spreader for bridge deck pavement of the present invention, the spreader moves laterally along the guide rail through the sliding mechanism, and then adjusts the position of the spreader to spread gravel according to actual needs. The hopper bin is used to store the required stones, and the stones in the hopper bin are controlled by the discharge device to control the amount of stones to be spread, so as to ensure the uniformity of the spread. The output shafts of the first motors on both sides of the frame are connected to the spreader roller through mutually meshing bevel gears, and the spreader roller is driven by the first motor to move forward and backward. The mobile crushed stone spreader for bridge deck pavement of the present invention can control the spreading amount of stones according to actual needs, and can adjust the spreading position of stones at the same time, which improves the spreading efficiency of crushed stones in the bridge deck pavement layer. It has a simple structure and is easy to use. .

Preferably, the discharge control device includes a main adjustment board, a first bracket, a first adjusting screw and a nut; one side of the main adjustment board is hinged to the bottom end of the rear side wall of the hopper, and the main adjustment board The other side of the plate is fixedly connected to the bottom end of the first bracket; the left and right ends of the first frame are respectively provided with first fixing holes; the lower end of the first adjusting screw is fixedly connected to the bottom end of the frame , the upper end of the first adjusting screw passes through the first fixing hole and is fixed by a nut.

According to the mobile gravel spreader for bridge deck pavement of the present invention, the spreading amount of stones is mainly controlled by the main adjustment board, the first bracket and the first adjustment screw, specifically: one side of the main adjustment board and the rear of the hopper. The bottom end of the side wall is hinged, the other side of the main adjustment board is fixedly connected with the first bracket, the first adjusting screw passes through the fixing hole on the first frame, and is specified by a nut matching the external thread of the first adjusting screw. . By adjusting the position of the nut on the first screw rod, the main adjusting plate moves up and down around the bottom of the rear side wall of the hopper, and then adjusts the opening between the main adjusting plate and the frame, thereby controlling the spreading amount of stone materials.

Preferably, the discharge control device also includes a fine-tuning plate, a second bracket and a second adjusting screw; one side of the fine-tuning plate is hinged to the bottom end of the front side wall of the hopper, and the other side of the fine-tuning plate A second adjusting screw is arranged on the side; a second bracket is fixed above the fine-tuning plate on the frame, and a second fixing hole is arranged on the second bracket, and the second adjusting screw passes through the first Two fixing holes are fixed by nuts.

According to the mobile crushed stone spreader for bridge deck pavement of the present invention, the amount of stone material spreading is assisted by the fine-tuning plate, the second bracket and the second adjusting screw, specifically: one side of the fine-tuning plate and the front side wall of the hopper The bottom end is hinged, the other side of the fine-tuning plate is provided with a second adjusting screw, the second adjusting screw passes through the second fixing hole on the second bracket, and is fixed by a nut matching the external thread of the second adjusting screw . By adjusting the position of the nut on the second screw rod, the fine adjustment plate moves up and down around the bottom of the front side wall of the hopper, and then adjusts the opening between the main adjustment plate and the fine adjustment plate, so as to finely regulate the spreading amount of stone materials.

Preferably, a vibration motor is arranged in the middle of the first bracket.

According to the mobile gravel spreader for bridge deck pavement of the present invention, the stones in the hopper are evenly spread on the cement concrete road surface through the vibration of the vibrating motor, and the stones are discharged conveniently and have good uniformity.

Preferably, the first adjusting screw comprises a fixed frame, an I-shaped screw and a spring; the lower end of the fixed frame is connected to the bottom end of the frame, the upper end of the fixed frame is provided with a bayonet, and the I-shaped screw The bottom end passes through the bayonet socket and is movably arranged in the fixed frame, and a spring is slidably mounted on the I-shaped screw rod.

According to the mobile gravel spreader for bridge deck pavement of the present invention, the lower end of the fixed frame is connected to the bottom end of the frame, and the bottom end of the I-shaped screw passes through the bayonet and is movably arranged in the fixed frame. The thin rod section in the middle is slidingly equipped with a spring, and the fixed frame can move up and down along the thin rod section in the middle of the I-shaped screw rod, and the vibration effect of the vibrating machine is alleviated by the spring. The setting of the second adjusting screw rod is the same as that of the first adjusting screw rod, and also has a damping effect.

Preferably, the sliding mechanism includes a connecting screw, a support frame and rollers; the left and right ends of the hopper are respectively symmetrically provided with connecting screws, and the upper ends of the connecting screws pass through the supporting frame and are fixed by nuts; The supporting frame is provided with rollers, and the rollers are slidably assembled on the guide rails.

According to the mobile gravel spreader for bridge deck pavement of the present invention, the left and right ends of the hopper are respectively hinged with connecting screws symmetrically, the upper ends of the connecting screws pass through the support frame and are fixed by nuts, and the rollers on the support frame can move along the guide rail. Move horizontally.

Preferably, a second motor is fixed on the support frame, and the output shaft of the second motor is connected to the roller shaft of the roller through mutually meshing bevel gears.

According to the mobile gravel spreader for bridge deck pavement of the present invention, the output shaft of the second motor is connected to the roller shaft of the roller through the bevel gears meshing with each other, and the motor drives the spreader to move horizontally along the guide rail.

Preferably, the number of said spreaders is 2.

According to the mobile gravel spreader for bridge deck pavement of the present invention, there are two spreaders, which can spread the bridge deck pavement layers of two lanes at one time, and are easy to use.

Description of drawings

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the schematic diagram of the three-dimensional structure of the bridge deck pavement mobile gravel spreader of the present invention;

Fig. 2 is a front view in Fig. 1;

Fig. 3 is a schematic structural view of the spreader in Fig. 1;

Fig. 4 is the right view of Fig. 1;

Fig. 5 is a structural representation of the control discharge device in Fig. 1;

Fig. 6 is a schematic structural diagram of the first adjusting screw in Fig. 3 .

In the above figure: 1 guide rail; 2 spreader; 3 frame; 4 hopper bin; 5 spreading roller; 6 first motor; 7 control discharge device; Screw; 731 fixed frame; 732 I-shaped screw; 733 spring; 740 fine-tuning plate; 750 second support; 760 second adjustment screw; 8 sliding mechanism; Two motors.

Detailed ways

Referring to Figures 1-5, a mobile gravel spreader for bridge deck pavement proposed according to an embodiment of the present invention includes: a bracket, a guide rail 1 and a spreader 2; wherein, the transverse direction between the brackets A guide rail 1 is provided; the spreader 2 is slidably assembled into the guide rail 1 through a sliding mechanism 8; the spreader 2 includes a frame 3, a hopper warehouse 4, a spreading roller 5 and a first motor 6; the spreader 2 The frame 3 is provided with a hopper storehouse 4, the bottom end of the hopper storehouse 4 is provided with a discharge control device 7, the upper end of the hopper storehouse 4 is provided with a sliding mechanism 8; the lower part of the hopper storehouse 4 is provided with a spreading roller 5. The rotating shaft of the spreading roller 5 is connected to the output shaft of the first motor 6 through bevel gears meshing with each other.

In the above embodiments, the spreader 2 moves laterally along the guide rail 1 through the sliding mechanism 8, and then adjusts the position of the spreader 2 to spread gravel according to actual needs. The hopper storehouse 4 is used for storing required stone materials, and the stone materials in the hopper storehouse 4 are controlled by the discharge device 7 to control the spreading amount of the stone materials to ensure the uniformity of spreading. The output shafts of the first motors 6 on both sides of the frame 3 are connected to the spreader roller 5 through mutually meshing bevel gears, and the first motor 6 drives the spreader roller 5 to move back and forth. The mobile crushed stone spreader for bridge deck pavement of the present invention can control the spreading amount of stones according to actual needs, and can adjust the spreading position of stones at the same time, which improves the spreading efficiency of crushed stones in the bridge deck pavement layer. It has a simple structure and is easy to use. .

With reference to Fig. 1-3 and Fig. 5, according to an embodiment of the present invention, described control discharging device 7 comprises main adjustment board 710, first bracket 720, first adjusting screw rod 730 and nut; The main adjustment board 710 One side is hinged with the bottom end of the rear side wall of the hopper bin 4, and the other side of the main adjustment board 710 is fixedly connected with the bottom end of the first bracket 720; the left and right ends of the first frame are respectively set There is a first fixing hole; the lower end of the first adjusting screw 730 is fixedly connected with the bottom end of the frame 3, and the upper end of the first adjusting screw 730 passes through the first fixing hole and is fixed by a nut.

In the above embodiments, the spreading amount of the stone is mainly controlled by the main adjusting board 710, the first bracket 720 and the first adjusting screw 730, specifically: one side of the main adjusting board 710 is hinged to the bottom end of the rear side wall of the hopper bin 4 , the other side of the main adjustment board 710 is fixedly connected with the first bracket 720, the first adjusting screw 730 passes through the fixing hole on the first frame 3, and is regulated by a nut matching the external thread of the first adjusting screw 730 . By adjusting the position of the nut on the first screw rod, the main adjusting plate 710 moves up and down around the bottom of the rear side wall of the hopper bin 4, and then adjusts the opening between the main adjusting plate 710 and the frame 3, thereby controlling the spreading of stone materials quantity.

Referring to Fig. 1, Fig. 3 and Fig. 5, according to an embodiment of the present invention, the control discharge device 7 also includes a fine-tuning plate 740, a second bracket 750 and a second adjusting screw 760; one side of the fine-tuning plate 740 Hinged with the bottom end of the front side wall of the hopper bin 4, the other side of the fine-tuning plate 740 is provided with a second adjusting screw 760; the frame 3 is fixed with a second bracket above the fine-tuning plate 740 750, the second bracket 750 is provided with a second fixing hole, and the second adjusting screw 760 passes through the second fixing hole and is fixed by a nut.

In the above embodiments, the fine-tuning plate 740, the second bracket 750 and the second adjusting screw 760 are used to assist in adjusting the spreading amount of stone materials, specifically: one side of the fine-tuning plate 740 is hinged to the bottom end of the front side wall of the hopper bin 4, so The other side of the fine-tuning plate 740 is provided with a second adjusting screw 760, the second adjusting screw 760 passes through the second fixing hole on the second bracket 750, and is fixed by a nut matching the external thread of the second adjusting screw 760 . By adjusting the position of the nut on the second screw rod, the fine-tuning plate 740 moves up and down around the bottom of the front side wall of the hopper bin 4, thereby adjusting the opening between the main adjusting plate 710 and the fine-tuning plate 740, thereby controlling the amount of stone material Make fine adjustments.

Referring to FIGS. 1-4 , according to an embodiment of the present invention, a vibration motor 9 is disposed in the middle of the first bracket 720 .

In the above embodiments, the stones in the hopper 4 are evenly spread on the cement concrete road surface through the vibration of the vibrating motor 9, and the stones are discharged conveniently and have good uniformity.

Referring to Fig. 6, according to an embodiment of the present invention, the first adjusting screw 730 includes a fixed frame 731, an I-shaped screw 732 and a spring 733; the lower end of the fixed frame 731 is connected to the bottom end of the frame 3, the The upper end of the fixed frame 731 is provided with a bayonet, and the bottom end of the I-shaped screw 732 is movably arranged in the fixed frame 731 through the bayonet, and a spring 733 is slidably mounted on the I-shaped screw 732 .

In the above embodiment, the lower end of the fixed frame 731 is connected to the bottom end of the frame 3, the bottom end of the I-shaped screw 732 is movably arranged in the fixed frame 731 through the bayonet, and the thin rod section in the middle of the I-shaped screw 732 Sliding assembly is equipped with spring 733, and fixed frame 731 can move up and down along the thin bar section in the middle of I-shaped screw rod 732, and the vibration effect of vibrator is alleviated by spring 733. The setting of the second adjusting screw 760 is the same as that of the first adjusting screw 730 , and also has the function of damping.

1-2 and FIG. 4, according to an embodiment of the present invention, the sliding mechanism 8 includes a connecting screw 801, a support frame 802 and a roller 803; the left and right ends of the hopper bin 4 are symmetrically provided with connecting screws 801 , the upper end of the connecting screw 801 passes through the support frame 802 and is fixed by a nut; the support frame 802 is provided with a roller 803 , and the roller 803 is slidably fitted into the guide rail 1 .

In the above embodiments, the left and right ends of the hopper bin 4 are symmetrically hinged with connecting screw rods 801 respectively. The upper ends of the connecting screw rods 801 pass through the support frame 802 and are fixed by nuts.

Referring to FIG. 4 , according to an embodiment of the present invention, a second motor 10 is fixed on the support frame 802 , and the output shaft of the second motor 10 is connected to the roller shaft of the roller 803 through mutually meshing bevel gears.

In the above embodiments, the output shaft of the second motor 10 is connected to the roller shaft of the roller 803 through the bevel gears meshing with each other, and the motor drives the spreader 2 to move horizontally along the guide rail 1 .

Referring to Figures 1-2, according to an embodiment of the present invention, the number of the spreaders 2 is two.

In the above embodiment, there are two spreaders 2, which can spread the bridge pavement layers of two lanes at a time, which is convenient to use.

The present invention proposes a novel bridge deck concrete pavement interface treatment method, that is, the stone planting treatment process. The spreader spreads a certain size of crushed stone evenly on the surface of freshly poured concrete that has not yet hardened, and presses it to a certain depth, slightly protruding, thereby creating a coarser macrostructure, forming a uniform surface texture, and the asphalt surface layer. Form a "rivet" connection, thereby improving the shear performance between pavement layers. The planting stone interface treatment method can overcome the defects of the traditional interface treatment process, can greatly improve the bonding force between the bridge deck and the waterproof layer, and the asphalt pavement layer, increase the stability between the pavement layers, and achieve the prevention and control of bridge deck pavement. Water damages the purpose. At the same time, the stone-planting treatment of cement concrete bridge decks can also improve the working conditions of workers, improve work efficiency, speed up the construction progress, and reduce damage to the bridge pavement structure.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these changes and modifications of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims (5)

1. The utility model provides a bridge floor is spread and is used portable rubble spreader which characterized in that includes: the device comprises a bracket, a guide rail (1) and a spreader (2); wherein a guide rail (1) is transversely arranged between the brackets; the spreader (2) is assembled on the guide rail (1) in a sliding way through a sliding mechanism (8);

the spreader (2) comprises a frame (3), a hopper bin (4), a spreading roller (5) and a first motor (6); a hopper bin (4) is arranged on the frame (3), a control discharging device (7) is arranged at the bottom end of the hopper bin (4), and a sliding mechanism (8) is arranged at the upper end of the hopper bin (4); a material scattering roller (5) is arranged below the hopper bin (4), and a rotating shaft of the material scattering roller (5) is connected with an output shaft of the first motor (6) through a bevel gear meshed with each other;

the control discharging device (7) comprises a main adjusting plate (710), a first bracket (720), a first adjusting screw (730) and a nut; one side of the main adjusting plate (710) is hinged with the bottom end of the rear side wall of the hopper bin (4), and the other side of the main adjusting plate (710) is fixedly connected with the bottom end of the first bracket (720); the left end and the right end of the first bracket (720) are respectively provided with a first fixing hole; the lower end of the first adjusting screw (730) is fixedly connected with the bottom end of the frame (3), and the upper end of the first adjusting screw (730) passes through the first fixing hole and is fixed through a nut;

the control discharging device (7) further comprises a fine adjustment plate (740), a second bracket (750) and a second adjusting screw (760); one side of the fine adjustment plate (740) is hinged with the bottom end of the front side wall of the hopper bin (4), and a second adjusting screw (760) is arranged on the other side of the fine adjustment plate (740); a second bracket (750) is fixed above the fine adjustment plate (740) on the frame (3), a second fixing hole is formed in the second bracket (750), and the second adjusting screw (760) penetrates through the second fixing hole and is fixed through a nut;

the sliding mechanism (8) comprises a connecting screw (801), a supporting frame (802) and a roller (803); connecting screws (801) are symmetrically arranged at the left end and the right end of the hopper bin (4) respectively, and the upper ends of the connecting screws (801) penetrate through the supporting frame (802) and are fixed through nuts; the support frame (802) is provided with a roller (803), and the roller (803) is assembled into the guide rail (1) in a sliding way.

2. The portable stone spreader for bridge deck pavement according to claim 1, characterized in that a vibration motor (9) is provided in the middle of the first bracket (720).

3. The portable stone spreader for bridge deck pavement according to claim 1, characterized in that the first adjusting screw (730) comprises a fixed frame (731), an i-screw (732) and a spring (733); the lower extreme of fixed frame (731) is connected with the bottom of frame (3), the upper end of fixed frame (731) is provided with the bayonet socket, the bottom of I-shaped screw (732) pass the bayonet socket activity set up in fixed frame (731), slide on I-shaped screw (732) and be equipped with spring (733).

4. The movable stone spreader for bridge deck pavement according to claim 1, wherein the supporting frame (802) is fixed with a second motor (10), and an output shaft of the second motor (10) is connected with a roller of the roller (803) through a bevel gear engaged with each other.

5. The portable stone spreader for bridge deck pavement according to claim 1, characterized in that the number of spreaders (2) is 2.

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