Dumper hydraulic oil cylinder with anti-toppling function

Abstract

The dump truck hydraulic oil cylinder comprises a hydraulic oil cylinder body and two installation bases, the upper end and the lower end of the hydraulic oil cylinder body are fixedly connected with connecting lugs, and the two installation bases are located at the upper end and the lower end of the hydraulic oil cylinder body respectively. Fixing shafts are movably mounted in the two mounting seats, the fixing shafts are movably sleeved with the connecting lugs, a supporting assembly is movably mounted between the two mounting seats, and a buffering assembly is movably mounted outside the supporting assembly; according to the dump truck hydraulic oil cylinder with the anti-toppling function, when the hydraulic oil cylinder body is started, the output end of the hydraulic oil cylinder body pushes the supporting rod to slide in the supporting square rod sleeve, then the supporting rod is matched with the supporting square rod sleeve to support the hydraulic oil cylinder body from the side direction, the stability of the hydraulic oil cylinder body is enhanced, and the supporting square rod sleeve and the supporting rod are matched through a positioning hole and an auxiliary oil cylinder; the hydraulic oil cylinder body can be supported in an auxiliary mode and effectively prevented from toppling over.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically to a hydraulic cylinder for a dump truck with anti-tipping function. Background Technology

[0002] A hydraulic cylinder, also known as a dump truck, is a linear motion actuator whose output force is proportional to the effective area of ​​the piston and the pressure difference between its two sides. A dump truck is a vehicle that unloads goods by hydraulic or mechanical lifting; it is also called a tipper truck. It consists of a truck chassis, a hydraulic lifting mechanism, a cargo box, and a power take-off device. The hydraulic cylinder of a dump truck is mainly used in the front-mounted direct-lift mechanism of the dump truck. It adopts advanced processing technology, uses high-quality steel, and generally uses imported seals. It has a reasonable structure, reliable performance, convenient installation and maintenance, large lifting capacity, and long service life.

[0003] In the existing technology, when pushing the cargo compartment of a truck with heavy loads, the lifting and lowering of the truck compartment is driven by a single hydraulic cylinder. The structure is unstable and cannot guarantee stable support for the hydraulic cylinder. The hydraulic cylinder is prone to tipping over during use, which can damage the hydraulic cylinder. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing a hydraulic cylinder for dump trucks with anti-tipping features, thereby improving stability and ensuring service life.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic cylinder for a dump truck with anti-tipping function, comprising a hydraulic cylinder body and two mounting seats. Connecting ears are fixedly connected to both the upper and lower ends of the hydraulic cylinder body. The two mounting seats are respectively located at the upper and lower ends of the hydraulic cylinder body. A fixed shaft is movably installed inside each of the two mounting seats. The connecting ears are movably sleeved on the outside of the fixed shaft. A support assembly is movably installed between the two mounting seats. A buffer assembly is movably installed outside the support assembly.

[0006] The support assembly includes a fixed cylinder fixedly installed on the outside of the hydraulic cylinder body. A side crossbeam is fixedly connected to the outside of the fixed cylinder. A support square rod sleeve is fixedly connected to the outside of the side crossbeam. A support rod is movably installed inside the support square rod sleeve. The support square rod sleeve and the support rod are respectively movably sleeved on the outside of the upper and lower fixed shafts. An installation groove is opened inside the side crossbeam. An auxiliary cylinder is fixedly installed inside the installation groove. Positioning holes are opened inside the support square rod sleeve and the support rod.

[0007] Preferably, the side crossbar, the supporting square rod sleeve, and the supporting rod are all symmetrically arranged on the left and right sides of the fixed cylinder.

[0008] Preferably, the positioning holes are respectively located above the support square rod sleeve and below the support rod, and the auxiliary oil cylinder is flush with the positioning holes.

[0009] Preferably, the push rod of the auxiliary cylinder is arranged facing outwards and corresponding to the positioning hole.

[0010] Preferably, the buffer assembly includes a lower support plate and an upper movable sleeve. The lower support plate is fixedly installed below the outside of the fixed cylinder. The upper movable sleeve is movably sleeved on the outside of the hydraulic cylinder body. Fixed sleeves are fixedly connected to the inner sides of both the lower support plate and the upper movable sleeve. A buffer sleeve is fixedly installed on the inner side of the fixed sleeve. A buffer spring is movably installed inside the buffer sleeve.

[0011] Preferably, the buffer sleeve is arranged equidistantly in a ring between the lower support plate and the upper movable sleeve.

[0012] Preferably, the upper movable sleeve is fitted outside the push rod of the hydraulic cylinder body.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. When the hydraulic cylinder body starts, its output end pushes the support rod to slide inside the support square rod sleeve. In turn, the support rod and the support square rod sleeve provide lateral support to the hydraulic cylinder body, enhancing its stability. The support square rod sleeve and the support rod, through the positioning hole and the cooperation of the auxiliary cylinder, can provide auxiliary support to the hydraulic cylinder body, effectively preventing it from tipping over.

[0015] 2. When the hydraulic cylinder body is retracted during operation, the upper movable sleeve will press down the buffer spring inside the buffer sleeve to buffer the impact force, effectively absorbing and dispersing these impact forces, thereby protecting the hydraulic cylinder body from damage and improving its service life. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a structural schematic diagram of the support component of the present invention;

[0018] Figure 3 This utility model Figure 2 Explosion-proof diagram of the structure;

[0019] Figure 4 This is a schematic diagram of the structure of the buffer assembly of this utility model;

[0020] Figure 5 This is a cross-sectional structural diagram of the buffer sleeve of this utility model.

[0021] In the diagram: 1. Hydraulic cylinder body; 2. Mounting base; 3. Connecting lug; 4. Fixed shaft; 5. Support assembly; 51. Fixed cylinder; 52. Side crossbar; 53. Support square rod sleeve; 54. Support rod; 55. Mounting groove; 56. Auxiliary cylinder; 57. Positioning hole; 6. Buffer assembly; 61. Lower support plate; 62. Upper movable sleeve; 63. Fixed sleeve; 64. Buffer sleeve; 65. Buffer spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This utility model provides a technical solution: a hydraulic cylinder for a dump truck with anti-tipping function, including a hydraulic cylinder body 1 and two mounting seats 2. The upper and lower ends of the hydraulic cylinder body 1 are fixedly connected with connecting ears 3. The two mounting seats 2 are respectively located at the upper and lower ends of the hydraulic cylinder body 1. The two mounting seats 2 are movably installed with fixed shafts 4 inside. The connecting ears 3 are movably sleeved on the outside of the fixed shafts 4. A support component 5 is movably installed between the two mounting seats 2. A buffer component 6 is movably installed on the outside of the support component 5.

[0024] The support assembly 5 includes a fixed cylinder 51 fixedly installed outside the hydraulic cylinder body 1. A side crossbeam 52 is fixedly connected to the outside of the fixed cylinder 51. A support square rod sleeve 53 is fixedly connected to the outside of the side crossbeam 52. A support rod 54 is movably installed inside the support square rod sleeve 53. The support square rod sleeve 53 and the support rod 54 are respectively movably sleeved on the outside of the upper and lower fixed shafts 4. An installation groove 55 is opened inside the side crossbeam 52. An auxiliary cylinder 56 is fixedly installed inside the installation groove 55. A positioning hole 57 is opened inside the support square rod sleeve 53 and the support rod 54. When the hydraulic cylinder body 1 is started, its output end pushes the support rod 54 to slide inside the support square rod sleeve 53. Then, the support rod 54 and the support square rod sleeve 53 provide lateral support to the hydraulic cylinder body 1, enhancing its stability. The support square rod sleeve 53 and the support rod 54, through the positioning hole 57 and the cooperation of the auxiliary cylinder 56, can provide auxiliary support to the hydraulic cylinder body 1, effectively preventing it from tipping over.

[0025] The side crossbar 52, support square rod sleeve 53, and support rod 54 are symmetrically arranged on the left and right sides of the fixed cylinder 51. This design makes the entire support assembly 5 structurally balanced, and the supporting forces on the left and right sides can be balanced with each other, enhancing the stability of the hydraulic cylinder body 1 during operation.

[0026] Positioning holes 57 are respectively located above the support square rod sleeve 53 and below the support rod 54. The auxiliary hydraulic cylinder 56 is flush with the positioning holes 57. When the auxiliary hydraulic cylinder 56 is activated, its piston rod can accurately extend into the positioning holes 57, thereby locking the positions of the support square rod sleeve 53 and the support rod 54. This design not only improves the stability of the support assembly 5, but also ensures the simplicity and reliability of operation.

[0027] The push rod of the auxiliary cylinder 56 is set outward to correspond to the positioning hole 57. When it is necessary to adjust the support state of the hydraulic cylinder body 1, simply start the auxiliary cylinder 56, and its push rod will quickly and accurately extend outward to fit tightly with the positioning hole 57. This design ensures the rapid response and efficient locking of the support component 5, further improving the stability and safety of the hydraulic cylinder body 1 under complex working conditions.

[0028] Please see Figure 4 and Figure 5 The buffer assembly 6 includes a lower support plate 61 and an upper movable sleeve 62. The lower support plate 61 is fixedly installed below the outside of the fixed cylinder 51. The upper movable sleeve 62 is movably sleeved on the outside of the hydraulic cylinder body 1. Fixed sleeves 63 are fixedly connected to the inner sides of both the lower support plate 61 and the upper movable sleeve 62. A buffer sleeve 64 is fixedly installed inside the fixed sleeve 63. A buffer spring 65 is movably installed inside the buffer sleeve 64. When the hydraulic cylinder body 1 is retracted during operation, the upper movable sleeve 62 will press down the buffer spring 65 to buffer inside the buffer sleeve 64, effectively absorbing and dispersing these impact forces, thereby protecting the hydraulic cylinder body 1 from damage and improving its service life.

[0029] The buffer sleeves 64 are arranged in a ring at equal intervals between the lower support plate 61 and the upper movable sleeve 62 to ensure the uniformity of the buffering effect and enhance the overall structural strength of the buffer assembly 6. The ring-shaped buffer sleeves 64 can withstand the impact from the hydraulic cylinder body 1 from all directions, and can be timely and effectively buffered when subjected to pressure from multiple directions.

[0030] The upper movable sleeve 62 is fitted outside the push rod of the hydraulic cylinder body 1. The upper movable sleeve 62 and the push rod of the hydraulic cylinder body 1 are provided with a sliding fit structure to ensure that the upper movable sleeve 62 can move smoothly with the extension and retraction of the push rod of the hydraulic cylinder body 1.

[0031] Working principle: The hydraulic cylinder body 1 is mounted on the upper and lower sides of the mounting base 2 between the carriage and the frame. During use, the hydraulic cylinder body 1 lifts the carriage. The support assembly 5 and the hydraulic cylinder body 1 are both located outside the fixed shaft 4 inside the mounting base 2. As the hydraulic cylinder body 1 extends and retracts, the support rod 54 extends and retracts within the support square rod sleeve 53. After the hydraulic cylinder body 1 lifts the carriage to its maximum stroke, the support rod 54 also reaches its maximum stroke within the support square rod sleeve 53. At this time, the positioning holes 57 in the support square rod sleeve 53 and the support rod 54 coincide. The auxiliary cylinder 56 inside the mounting groove 55 extends and engages in the positioning holes 57 to limit the support rod 54 and the support square rod sleeve 53. The support square rod sleeve 53 and the support rod 54 are symmetrically arranged on the left and right sides of the hydraulic cylinder body 1, providing support to the vehicle from the left and right sides of the carriage in conjunction with the hydraulic cylinder body 1, preventing rollover and ensuring stability and lateral support.

[0032] When the push rod of the hydraulic cylinder body 1 retracts into the cylinder body, the connecting lug 3 at the top of the hydraulic cylinder body 1 contacts the upper movable sleeve 62. The connecting lug 3 pushes the upper movable sleeve 62 downward, which in turn presses against the buffer sleeve 64 located between itself and the lower support plate 61. The buffer sleeve 64 contracts and compresses the buffer spring 65 installed inside it. The elastic deformation of the buffer spring 65 supports the push rod and buffers the impact force on the cylinder body, thereby increasing the service life of the hydraulic cylinder body 1.

[0033] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder for a dump truck with anti-tipping function, comprising a hydraulic cylinder body (1) and two mounting seats (2), characterized in that: The upper and lower ends of the hydraulic cylinder body (1) are fixedly connected with connecting ears (3). The two mounting seats (2) are respectively located at the upper and lower ends of the hydraulic cylinder body (1). The two mounting seats (2) are movably installed with fixed shafts (4) inside. The connecting ears (3) are movably sleeved on the outside of the fixed shafts (4). A support assembly (5) is movably installed between the two mounting seats (2). A buffer assembly (6) is movably installed on the outside of the support assembly (5). The support assembly (5) includes a fixed cylinder (51) fixedly installed outside the hydraulic cylinder body (1). A side crossbar (52) is fixedly connected to the outside of the fixed cylinder (51). A support square rod sleeve (53) is fixedly connected to the outside of the side crossbar (52). A support rod (54) is movably installed inside the support square rod sleeve (53). The support square rod sleeve (53) and the support rod (54) are respectively movably sleeved on the outside of the upper and lower fixed shafts (4). An installation groove (55) is opened inside the side crossbar (52). An auxiliary cylinder (56) is fixedly installed inside the installation groove (55). A positioning hole (57) is opened inside the support square rod sleeve (53) and the support rod (54).

2. A hydraulic cylinder for a dump truck with anti-tipping mechanism according to claim 1, characterized in that: The side crossbar (52), the support square rod sleeve (53), and the support rod (54) are all symmetrically arranged on the left and right sides of the fixed cylinder (51).

3. A hydraulic cylinder for a dump truck with anti-tipping function as described in claim 1, characterized in that: The positioning holes (57) are respectively located above the support square rod sleeve (53) and below the support rod (54), and the auxiliary oil cylinder (56) is flush with the positioning holes (57).

4. A hydraulic cylinder for a dump truck with anti-tipping mechanism according to claim 3, characterized in that: The push rod of the auxiliary cylinder (56) is set outward and corresponds to the positioning hole (57).

5. A hydraulic cylinder for a dump truck with anti-tipping mechanism according to claim 1, characterized in that: The buffer assembly (6) includes a lower support plate (61) and an upper movable sleeve (62). The lower support plate (61) is fixedly installed below the outside of the fixed cylinder (51). The upper movable sleeve (62) is movably sleeved on the outside of the hydraulic cylinder body (1). The inner sides of the lower support plate (61) and the upper movable sleeve (62) are both fixedly connected to a fixed sleeve (63). The inner side of the fixed sleeve (63) is fixedly installed with a buffer sleeve (64). The buffer sleeve (64) is movably installed with a buffer spring (65) inside.

6. A hydraulic cylinder for a dump truck with anti-tipping mechanism according to claim 5, characterized in that: The buffer sleeve (64) is arranged equidistantly in a ring between the lower support plate (61) and the upper movable sleeve (62).

7. A hydraulic cylinder for a dump truck with anti-tipping mechanism according to claim 5, characterized in that: The upper movable sleeve (62) is fitted onto the outside of the push rod of the hydraulic cylinder body (1).

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