A leg device for supporting a concrete pump truck

Abstract

The present invention discloses a leg support device for a concrete pump truck, which relates to the technical field of concrete pump trucks and comprises a fixed connecting piece on the outside of a vehicle body, and also comprises a leg cross plate, which is rotatably mounted on the fixed connecting piece on the outside of the vehicle body, a water collecting trough is provided on the leg cross plate, a drainage hole is provided in the water collecting trough, and a triangular plate is fixedly mounted on the top edge of the drainage hole; a leg angle plate is fixedly mounted on the bottom of the leg cross plate, and the leg angle plates are arranged in adjacent triangles, and a reinforcing plate is fixedly mounted on the outside of the leg angle plate, and the left and right end points of the reinforcing plate are respectively located at the midpoint of the leftmost plate and the midpoint of the rightmost plate of the adjacent triangular-shaped leg angle plates. By providing the leg angle plate and the drainage hole and utilizing the triangle design, good stability is provided while reducing space occupancy, and rainwater can be discharged in time to avoid long-term adhesion of water stains and reduce the impact on the operation of the legs.

Description

Technical Field

[0001] The invention relates to the technical field of concrete pump trucks, and in particular to a leg device used for supporting a concrete pump truck. Background Art

[0002] There are three types of outrigger structures for concrete pump trucks. The first type is the X-type outrigger, the second type is the rear-swing outrigger, and the third type is the front-swing outrigger. The front-swing outrigger and the rear-swing outrigger have limitations. The current mainstream application product is the X-type outrigger, which includes multiple retractable leg sections. Its characteristic is that it can be retracted in a linear manner and can achieve single-sided support after unfolding.

[0003] The design and performance of the outriggers directly affect the overall stability and working performance of the pump truck. The design of the outriggers needs to take into account the working environment, working conditions and overall structure of the pump truck. The performance of the outriggers includes the stability, load-bearing capacity and scalability of the outriggers.

[0004] In the prior art, the outrigger device of a concrete pump truck is often used in humid environments such as rainy days. In such an environment, moisture will adhere to the outrigger device. The moisture attached to the outrigger will increase the weight of the outrigger, change the center of gravity position of the outrigger, thereby reducing the stability of the outrigger, and also accelerate the corrosion of the outrigger, affecting the service life of the outrigger. Summary of the invention

[0005] The object of the present invention is to provide a support leg device for supporting a concrete pump truck, so as to solve the problem that the stability and service life of the support legs are affected by the adhesion of moisture.

[0006] The present invention is achieved through the following technical solutions:

[0007] A leg support device for supporting a concrete pump truck, comprising a vehicle body external fixing connection piece, and further comprising:

[0008] The leg horizontal plate is rotatably mounted on the fixed connecting member outside the vehicle body, the leg horizontal plate is provided with a water collecting trough, the water collecting trough is provided with a drainage hole, and a triangular plate is fixedly mounted on the top edge of the drainage hole;

[0009] A leg angle plate is fixedly installed at the bottom of the leg cross plate, and the leg angle plates are arranged in adjacent triangles. A reinforcing plate is fixedly installed on the outside of the leg angle plate, and the left and right end points of the reinforcing plate are respectively located at the midpoint of the leftmost plate and the midpoint of the rightmost plate of the adjacent triangular leg angle plates, providing enhanced stability for the triangle that is about to deform, thereby preventing deformation and increasing service life, thereby effectively improving the overall stability and bearing capacity again, making it more stable and reliable.

[0010] Furthermore, there are two leg cross plates, and the two leg cross plates are symmetrically distributed up and down with respect to the external fixing connection piece of the vehicle body. The symmetrical arrangement facilitates installation and use.

[0011] Furthermore, the top of the leg angle plate and the bottom of the leg cross plate are welded together via a welding plate, and a positioning base plate is fixedly installed at the bottom of the leg angle plate to facilitate positioning welding by workers during installation.

[0012] Furthermore, a clearing groove is provided in the middle of the positioning bottom plate, and the clearing groove is generally high in the middle and low at the edges. The left and right sides of the positioning bottom plate are arranged to be inclined downward, so as to facilitate the water to slide down by itself by utilizing the height difference.

[0013] Furthermore, a scraping mechanism is also provided on the leg cross plate, and the scraping mechanism includes a sliding rod, and the sliding rod passes through and is slidably installed on the welding plate. The outside of the sliding rod is elastically connected to the external fixed connecting part of the vehicle body through a rubber elastic rod, and the rubber elastic rod will pull the sliding rod to slide.

[0014] Furthermore, a vertical groove is provided on the sliding rod, and an insertion rod is slidably installed in the vertical groove. An elastic element is provided between the insertion rod and the bottom of the inner wall of the vertical groove. The outside of the insertion rod is fixedly installed on the outside of the scraper, so that the insertion rod has elastic force in the up and down directions. In the absence of external force, the insertion rod can move upward to return to its initial position.

[0015] Furthermore, the top of the scraper is arranged in an arc shape, a trapezoidal edge is fixedly installed on the outer side of the bottom of the drainage hole, and a semi-circular ball is fixedly installed on the bottom of the trapezoidal edge. The contact and separation between the scraper and the semi-circular ball generates knocking vibration, which promotes the efficiency of falling and processing of impurities and water stains.

[0016] Furthermore, an auxiliary mechanism is provided on the scraper, which includes a slide plate. A vertical T-shaped groove is opened in the middle section of the scraper. The slide plate is slidably installed on the scraper through the T-shaped groove to limit the movement so that the slide plate can only slide up and down.

[0017] Furthermore, a brush is fixedly mounted on the top of the slide plate, and a limiting sleeve is fixedly mounted on the outside of the scraper.

[0018] Furthermore, the outline size of the limiting sleeve is smaller than the external outline size of the lower half of the brush, and the upper half of the brush is arranged through the limiting sleeve. The brush is narrow at the top and wide at the bottom. The brush and the limiting sleeve can produce mutual compression to discharge attached water stains, thereby improving the subsequent auxiliary cleaning effect.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0020] 1. The present invention is designed with a triangular shape by providing a leg angle plate and a drainage hole. At the same time, the reinforcing plate provides enhanced stability for the triangle that is about to be deformed, thereby preventing deformation and improving the service life, thereby effectively improving the overall stability and bearing capacity again, making it more stable and reliable, while reducing space occupation and providing good stability. At the same time, in a humid environment such as rainy days, rainwater can be discharged in time to avoid long-term attachment of water stains, thereby reducing the impact on the work of the legs, which helps to improve the service life and reliability of the legs;

[0021] 2. The present invention is provided with a scraping mechanism, using a sliding rod and a scraper. When the support leg horizontal plate starts working and rotates counterclockwise outward, the sliding rod is driven to move by the rubber elastic rod, so that the scraper can scrape and clean the soil and other solid impurities on the bottom surface of the support leg horizontal plate. When it moves to the position of the semi-circular ball, the semi-circular ball will continue to squeeze the scraper downward. When the semi-circular ball is separated from the scraper, the scraper will move upward due to the elastic force of the elastic element in the plug rod and the vertical groove to fit with the trapezoidal edge again. This process will form knocking and generate vibration, thereby promoting the impurities attached to the scraper surface to fall off, thereby improving the subsequent cleaning efficiency.

[0022] 3. In the present invention, when the scraper strikes the trapezoidal edge, the striking will also cause the trapezoidal edge to vibrate, thereby promoting the vibration and fall of water stains attached to the surface of the trapezoidal edge, effectively improving the drainage efficiency. Whenever the scraper contacts and separates from the hemisphere, striking vibration will be generated to achieve the promotion effect;

[0023] 4. The present invention, by providing an auxiliary mechanism, utilizes a slide plate and a brush to achieve a pre-cleaning effect, reduces the cleaning burden of the scraper, and improves the cleaning effect of the scraper. At the same time, the knocking vibration generated by the scraper and the semi-circular ball forms inertial sliding, so that the brush can squeeze the limiting sleeve to discharge the attached water stains, thereby improving the subsequent auxiliary cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0025] Figure 1 It is a schematic diagram of the overall external structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall rear-view external structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the external local structure when looking down at the outrigger horizontal plate;

[0028] Figure 4 This is a schematic diagram of the external local structure of the outrigger cross plate from the bottom view;

[0029] Figure 5 It is a schematic diagram of the external local structure of the bottom of the sliding rod;

[0030] Figure 6 It is a schematic diagram of the external structure along the edge of the trapezoid;

[0031] Figure 7 It is a schematic diagram of the external local structure of the sliding rod when looking down;

[0032] Figure 8 It is a schematic diagram of the external local structure of the scraper;

[0033] Fig. 9 It is a schematic diagram of the external local structure of the limit sleeve;

[0034] Fig.10 Schematic diagram of the external local structure of the skateboard.

[0035] The reference numerals represent: 1-external fixed connector of the vehicle body, 2-cross plate of the leg, 3-water collecting trough, 4-drainage hole, 5-triangular plate, 6-angle plate of the leg, 7-reinforcement plate, 8-welding plate, 9-positioning bottom plate, 10-clearing groove, 11-slide rod, 12-rubber elastic rod, 13-vertical groove, 14-insertion rod, 15-scraper, 16-trapezoidal edge, 17-semi-circular ball, 18-slide plate, 19-brush, 20-T-type slide groove, 21-limiting sleeve. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and drawings. The schematic implementation modes and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the actual development and use stage.

[0037] like Figures 1 to 10 As shown, the present invention provides a leg support device for a concrete pump truck, comprising a vehicle body external fixing connector 1, and further comprising:

[0038] The outrigger horizontal plate 2 is rotatably mounted on the external fixed connection member 1 of the vehicle body, and the rotating part thereof uses an electrically controlled rotating shaft, which is convenient for the staff to control the use. A water collecting trough 3 is provided on the outrigger horizontal plate 2, and a drainage hole 4 is provided in the water collecting trough 3. A triangular plate 5 is fixedly mounted on the top edge of the drainage hole 4. There are two outrigger horizontal plates 2, and they are symmetrically distributed up and down about the external fixed connection member 1 of the vehicle body;

[0039] A leg angle plate 6 is fixedly installed at the bottom of the leg cross plate 2, and the leg angle plates 6 are arranged in adjacent triangles. A reinforcing plate 7 is fixedly installed on the outside of the leg angle plate 6. The left and right end points of the reinforcing plate 7 are respectively located at the midpoint of the leftmost plate and the midpoint of the rightmost plate of the adjacent triangular leg angle plates 6. The top of the leg angle plate 6 is welded to the bottom of the leg cross plate 2 by a welding plate 8. A positioning base plate 9 is fixedly installed at the bottom of the leg angle plate 6. A clearing groove 10 is opened in the middle part of the positioning base plate 9. The clearing groove 10 is set with a height setting of high in the middle and low at the edges as a whole. The left and right sides of the positioning base plate 9 are set to be inclined downward, so as to facilitate the self-sliding of water by utilizing the height difference.

[0040] In the above technical scheme, after the concrete pump truck moves to the predetermined position and uses the support leg device for supporting operation, the support leg cross plate 2 rotates counterclockwise and is put into use due to the staff operating the electric control shaft, and the support leg angle plates 6 between the two support leg cross plates 2 are adjacent triangles, and the triangle stability is used to provide good stability and bearing capacity. At the same time, a reinforcing plate 7 is provided, and the two end points of the reinforcing plate 7 are the midpoint of the leftmost plate and the midpoint of the rightmost plate of the support leg angle plate 6, so that the entire adjacent triangle support leg angle plate 6 is covered. If the support leg angle plate 6 of one of the triangles is about to be deformed, the remaining triangles will be affected by the reinforcing plate 7, and the remaining triangles are in a stable state, which will provide enhanced stability for the triangle that is about to be deformed, thereby preventing deformation and increasing service life, thereby effectively improving the overall stability and bearing capacity again, making it more stable and reliable. When the concrete pump truck works in rainy days or humid environments, the attached water flow on the support leg cross plate 2 will be collected in the water collecting trough 3, and the collected water flow will be discharged downward through the drainage hole 4. At the same time, a triangular plate 5 is provided to guide the water flow in the water collecting trough 3 so that it can enter the drainage hole 4 for discharge faster, thereby improving the discharge efficiency and avoiding the long-term attachment of water flow to produce water stains that affect the service life and safety. Through the provision of welding plates 8 and positioning base plates 9, it is convenient for workers to perform positioning welding during installation, thereby improving the installation and use efficiency of the support leg angle plate 6. Finally, by providing the support leg angle plate 6 and the drainage hole 4 and utilizing the triangle design, good stability is provided while reducing space occupancy. At the same time, in humid environments such as rainy days, rainwater can be discharged in time to avoid long-term attachment of water stains, thereby reducing the impact on the work of the support legs, which helps to improve the service life and reliability of the support legs.

[0041] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, in the present invention, a scraping mechanism is also provided on the leg cross plate 2, and the scraping mechanism includes a slide bar 11, the slide bar 11 penetrates and is slidably installed on the welding plate 8, the outside of the slide bar 11 is elastically connected to the fixed connecting member 1 outside the vehicle body through a rubber elastic rod 12, a vertical groove 13 is provided on the slide bar 11, a plug rod 14 is slidably installed in the vertical groove 13, and an elastic element is provided between the plug rod 14 and the bottom of the inner wall of the vertical groove 13, where the elastic element is a metal spring, so that the plug rod 14 has an elastic force in the up and down directions, and the plug rod 14 can be inserted in the vertical groove 13 without external force. The rod 14 can move upward to return to its initial position. The outside of the rod 14 is fixedly installed on the outside of the scraper 15. The top of the scraper 15 is set in an arc shape to facilitate scraping and contact extrusion. A trapezoidal edge 16 is fixedly installed on the outside of the bottom of the drainage hole 4, and a semi-circular ball 17 is fixedly installed on the bottom of the trapezoidal edge 16. The trapezoidal edge 16 can increase the surface area of ​​the drainage hole 4, making drainage smoother and reducing the possibility of water accumulation. The trapezoidal edge 16 can guide the water flow, so that the water flow is discharged faster, thereby improving the drainage efficiency, reducing external force damage, and increasing the service life.

[0042] In the above technical scheme, when the leg cross plate 2 starts to work and rotates counterclockwise outward, the rubber elastic rod 12 on the external fixed connecting part 1 of the vehicle body will pull the sliding rod 11 to slide, so that the sliding rod 11 will slide to the right side of the leg cross plate 2, and the sliding rod 11 will drive the plug rod 14 to move accordingly, and the plug rod 14 will drive the scraper 15 to move accordingly, and the scraper 15 will scrape the outer surface of the bottom of the leg cross plate 2 to clean up the splashed mud and other solid impurities attached. When the scraper 15 is driven to the outside of the trapezoidal edge 16, it continues to move, and the scraper 15 will move downward along the inclined plate of the trapezoidal edge 16. When it moves to the position of the semicircular ball 17, it continues to move, and the semicircular ball 17 will continue to squeeze the scraper 15 downward, and when the semicircular ball 17 is separated from the scraper 15, the scraper 15 will move upward due to the elastic force of the plug rod 14 and the elastic element in the vertical groove 13. The scraper 15 is then refitted with the trapezoidal edge 16, and this process will form knocking and vibration, thereby promoting the impurities attached to the surface of the scraper 15 to fall off and improve the subsequent cleaning efficiency. At the same time, the knocking will also cause the trapezoidal edge 16 to vibrate, thereby promoting the water stains attached to the surface of the trapezoidal edge 16 to fall off, effectively improving the drainage efficiency. Whenever the scraper 15 contacts and separates from the semi-circular ball 17, knocking vibration will be generated to achieve the promotion effect. By providing a slide bar 11 and a scraper 15, when the support leg cross plate 2 starts working and rotates counterclockwise outward, the rubber elastic rod 12 is used to drive the slide bar 11 to move, so that the scraper 15 can scrape and clean the solid impurities such as mud on the bottom surface of the support leg cross plate 2. At the same time, the contact and separation between the scraper 15 and the semi-circular ball 17 generates knocking vibration, which promotes the efficiency of falling and processing of impurities and water stains, and improves the overall cleaning efficiency.

[0043] like Figure 7 , Figure 8 , Fig. 9 and Fig.10 In the present invention, an auxiliary mechanism is also provided on the scraper 15, and the auxiliary mechanism includes a slide plate 18. A vertical T-shaped groove 20 is opened in the middle section of the scraper 15. The slide plate 18 is slidably installed on the scraper 15 through the T-shaped groove 20. A brush 19 is fixedly installed on the top of the slide plate 18. A limiting sleeve 21 is fixedly installed on the outside of the scraper 15. The contour size of the limiting sleeve 21 is smaller than the outer contour size of the lower half of the brush 19, and the upper half of the brush 19 is arranged through the limiting sleeve 21, so the entire brush 19 is narrow at the top and wide at the bottom.

[0044] In the above technical solution, when the scraper 15 moves to the right to scrape and clean the bottom surface of the leg cross plate 2, the scraper 15 will also drive the slide plate 18 to move to the right, and the slide plate 18 will drive the brush 19 to clean the bottom surface of the leg cross plate 2 in advance, and clean the light and small impurities such as dust that are easy to fall and clean, thereby reducing the cleaning burden of the scraper 15, so that the scraper 15 can better scrape solid impurities such as soil. When the scraper 15 and the semi-circular ball 17 produce a knocking vibration effect of contact and separation, the vibration effect will cause the slide plate 18 to produce an inertial sliding effect, so that the slide plate 18 will slide up and down along the T-shaped slide groove 20, and the slide plate 18 will drive the brush 19 to slide up and down. The limiting sleeve 21 is passed through to form a shape that is narrow at the top and wide at the bottom. Therefore, when the brush 19 slides up and down, the wider part of the lower half of the brush 19 will squeeze the limiting sleeve 21, resulting in a phenomenon that the lower half of the brush 19 and the limiting sleeve 21 are squeezed against each other, thereby discharging water stains adsorbed on the brush 19, achieving automatic cleaning of attached water stains and improving subsequent auxiliary cleaning effects. Finally, by providing the slide plate 18 and the brush 19, a pre-cleaning effect is achieved, reducing the cleaning burden of the scraper 15 and improving the cleaning effect of the scraper 15. At the same time, the knocking vibration generated by the scraper 15 and the semi-circular ball 17 is used to form inertial sliding, so that the brush 19 can be squeezed against the limiting sleeve 21 to discharge attached water stains and improve subsequent auxiliary cleaning effects.

[0045] In summary, by providing the leg angle plate 6 and the drainage hole 4 and utilizing the triangular design, good stability is provided while reducing space occupancy. At the same time, in humid environments such as rainy days, rainwater can be discharged in time to avoid long-term adhesion of water stains, thereby reducing the impact on the operation of the legs, which helps to improve the service life and reliability of the legs. A scraping mechanism and an auxiliary mechanism are provided to improve the cleaning effect of the scraper 15 while providing a good auxiliary effect.

[0046] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A leg support device for a concrete pump truck, comprising a vehicle body external fixing connection member (1), characterized in that: Also includes: A leg cross plate (2) is rotatably mounted on a fixed connection piece (1) outside the vehicle body, a water collecting trough (3) is provided on the leg cross plate (2), a drainage hole (4) is provided in the water collecting trough (3), and a triangular plate (5) is fixedly mounted on the top edge of the drainage hole (4); A leg angle plate (6) is fixedly mounted on the bottom of the leg cross plate (2), the leg angle plates (6) are arranged in adjacent triangles, a reinforcing plate (7) is fixedly mounted on the outside of the leg angle plates (6), and the left and right end points of the reinforcing plate (7) are respectively located at the midpoint of the leftmost plate and the midpoint of the rightmost plate of the adjacent triangular leg angle plates (6); The support leg cross plate (2) is also provided with a scraping mechanism, which includes a sliding rod (11), the sliding rod (11) penetrates and is slidably mounted on the welding plate (8), the outside of the sliding rod (11) is elastically connected to the fixed connecting member (1) outside the vehicle body via a rubber elastic rod (12), a vertical groove (13) is provided on the sliding rod (11), a plug rod (14) is slidably mounted in the vertical groove (13), an elastic element is provided between the plug rod (14) and the bottom of the inner wall of the vertical groove (13), the outside of the plug rod (14) is fixedly mounted on the outside of the scraper (15), the top of the scraper (15) is arranged in an arc shape, a trapezoidal edge (16) is fixedly mounted on the outside of the bottom of the drainage hole (4), and a semicircular ball (17) is fixedly mounted on the bottom of the trapezoidal edge (16).

2. The leg support device for supporting a concrete pump truck according to claim 1, characterized in that: There are two support leg cross plates (2), and the two support leg cross plates (2) are symmetrically distributed up and down with respect to the vehicle body external fixed connection piece (1).

3. The leg support device for supporting a concrete pump truck according to claim 1, characterized in that: The top of the leg angle plate (6) and the bottom of the leg cross plate (2) are welded together via a welding plate (8), and a positioning bottom plate (9) is fixedly mounted on the bottom of the leg angle plate (6).

4. The leg support device for supporting a concrete pump truck according to claim 3, characterized in that: A cleaning groove (10) is provided in the middle of the positioning bottom plate (9), and the cleaning groove (10) is generally arranged to be high in the middle and low at the edges, and the left and right sides of the positioning bottom plate (9) are arranged to be inclined downward.

5. The leg support device for supporting a concrete pump truck according to claim 4, characterized in that: The scraper (15) is also provided with an auxiliary mechanism, which comprises a slide plate (18). A vertical T-shaped slide groove (20) is provided at the middle section of the scraper (15), and the slide plate (18) is slidably mounted on the scraper (15) via the T-shaped slide groove (20).

6. The leg support device for supporting a concrete pump truck according to claim 5, characterized in that: A brush (19) is fixedly mounted on the top of the slide plate (18), and a limiting sleeve (21) is fixedly mounted on the outside of the scraper (15).

7. The leg support device for supporting a concrete pump truck according to claim 6, characterized in that: The outline size of the limiting sleeve (21) is smaller than the outer outline size of the lower half of the brush (19); the upper half of the brush (19) passes through the limiting sleeve (21); and the brush (19) is narrow at the top and wide at the bottom.

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