CN220412706U - Landing leg oil cylinder for truck-mounted crane - Google Patents

Abstract

The utility model relates to the technical field of support leg oil cylinders, in particular to a support leg oil cylinder for a truck-mounted crane, which comprises a cylinder body and a piston rod, wherein the piston rod is arranged in the cylinder body in a sliding manner, a base plate is arranged at the bottom end of the piston rod, a plurality of sliding ways are arranged in the circumferential direction of the base plate, support rods are arranged in the sliding ways in a sliding manner, the support rods protrude out of the sliding ways from the end parts of the piston rod back to the end parts of the piston rod, cushion blocks are arranged, the bottom surfaces of the cushion blocks are level to the bottom surfaces of the base plate, and a driving mechanism is arranged in the base plate and used for driving a plurality of support rods to synchronously slide along the sliding ways; the utility model provides the supporting leg oil cylinder for the truck crane, which has the advantages of simple structural design, expandable stressed area and anti-skid function.

Description

Landing leg oil cylinder for truck-mounted crane

Technical Field

The utility model relates to the technical field of landing leg oil cylinders, in particular to a landing leg oil cylinder for a truck crane.

Background

The truck crane, also called as truck crane, is one kind of truck capable of realizing the lifting and rotation of cargo via hydraulic expansion and contraction and is used widely in construction, coal mine, warehouse, wharf and other narrow places. The support leg oil cylinder is arranged on the frame of the truck crane and comprises an oil cylinder body and a base plate, the base plate is fixedly connected with a cross rod on the vehicle through the oil cylinder body, and the oil cylinder body is used for adjusting the base plate up and down so as to stably support the vehicle body.

The landing leg hydro-cylinder is because the pressure that bears is great when the during operation, when supporting on ground, the backing plate can cause the damage to ground owing to the atress is concentrated, probably arouses ground fracture, influences the stability of automobile body, has serious potential safety hazard. In addition, the existing landing leg oil cylinder has poor anti-skid effect, and is also unfavorable for the stability of the vehicle body.

Disclosure of Invention

The utility model aims to solve the technical problems that: overcomes the defects in the prior art, and provides the supporting leg oil cylinder for the truck crane, which has simple structural design, can expand the stressed area and has the anti-skid function.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a landing leg hydro-cylinder for truck-mounted crane, includes cylinder body and piston rod, the piston rod slides and wears to locate the cylinder body, the backing plate is installed to the bottom of piston rod, a plurality of slides have been seted up to the circumference of backing plate, slidable mounting has the vaulting pole in the slide, the tip of vaulting pole back piston rod is outstanding the slide, and installs the cushion, the bottom surface of cushion and the bottom surface parallel and level of backing plate, be equipped with actuating mechanism in the backing plate for a plurality of vaulting poles are slided along the slide in step.

Further, actuating mechanism includes gear wheel, gyro wheel, shaft and drive assembly, be equipped with annular cavity in the middle part of backing plate, annular cavity is located the top of slide, and is linked together with the tip that the slide was facing away from the cushion, gear wheel rotates and installs in annular cavity, a plurality of waist holes have been seted up to the circumference of gear wheel, waist hole is corresponding with the slide, and radially seting up along the gear wheel, so the bottom and the vaulting pole of shaft face the end connection of piston rod, and the top is rotated with the gyro wheel and is connected, the gyro wheel inlays and locates in the waist hole, and with waist hole rolling fit, drive assembly is connected with gear wheel transmission.

Further, the drive assembly includes pinion, pivot and knob, set up the cavity in the backing plate, the cavity is linked together with annular cavity, the pivot is rotated and is installed in the cavity, the pinion is installed in the pivot, the pinion meshes with the gear wheel, the top of pivot is extended out the cavity and is connected with the knob.

Further, anti-skid patterns are arranged on the knob.

Further, the bottom ends of the base plate and the cushion block are provided with anti-slip pads.

Further, the length of the stay bar is greater than the length of the slideway.

The beneficial effects of the utility model are as follows:

(1) According to the utility model, the plurality of supporting rods are driven by the driving mechanism to synchronously slide along the slide way, so that the cushion blocks share the stress of the base plate, the expansion of the stress area is realized, the influence of stress concentration on the ground is reduced, the stability of the vehicle body is improved, the potential safety hazard is eliminated, and the anti-skid effect is realized;

(2) According to the utility model, through the arrangement of the anti-skid pad, the friction force between the cushion block and the ground and between the cushion plate and the ground is increased, so that the anti-skid effect is further improved.

Drawings

The utility model will be further described with reference to the drawings and embodiments.

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is an enlarged view of a portion a in fig. 1;

FIG. 3 is a cross-sectional view of a shim plate according to the present utility model;

FIG. 4 is a schematic view of a large gear of the present utility model;

fig. 5 is a schematic view of a brace bar in accordance with the present utility model.

In the figure: 1. a cylinder; 2. a piston rod; 3. a backing plate; 4. a slideway; 5. a brace rod; 6. a cushion block; 7a, a large gear; 7b, a roller; 7c, a wheel shaft; 7d, a driving assembly; 7d1, pinion gear; 7d2, a rotating shaft; 7d3, a knob; 8. an annular cavity; 9. waist holes; 10. a cavity; 11. anti-skid lines; 12. an anti-slip mat.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings. These drawings are simplified schematic views illustrating the basic structure of the present utility model by way of illustration only, and thus show only the constitution related to the present utility model.

As shown in fig. 1-3, the supporting leg oil cylinder for the truck crane comprises a cylinder body 1 and a piston rod 2, wherein the piston rod 2 is arranged in the cylinder body 1 in a sliding penetrating manner, a base plate 3 is arranged at the bottom end of the piston rod 2, a plurality of sliding ways 4 are arranged in the circumferential direction of the base plate 3, supporting rods 5 are arranged in the sliding ways 4 in a sliding manner, the supporting rods 5 protrude out of the sliding ways 4 back to the end parts of the piston rod 2, cushion blocks 6 are arranged, the bottom surfaces of the cushion blocks 6 are flush with the bottom surfaces of the base plate 3, and a driving mechanism is arranged in the base plate 3 and used for driving a plurality of supporting rods 5 to synchronously slide along the sliding ways 4. The supporting rods 5 are driven by the driving mechanism to synchronously slide along the slide way 4, so that the cushion block 6 shares the stress of the base plate 3, the expansion of the stress area is realized, the influence of stress concentration on the ground is reduced, the stability of the vehicle body is improved, the potential safety hazard is eliminated, and the anti-skid effect is realized. Specifically, a hydraulic system for driving the piston rod 2 to lift in the cylinder body 1 is in the prior art, and will not be described in detail here; the backing plate 3 is cylindrical; four slide ways 4 are uniformly arranged in the circumferential direction of the backing plate 3 and are arranged along the chord direction of the backing plate 3; the length of the stay 5 is greater than the length of the slideway 4.

As shown in fig. 3-5, the driving mechanism comprises a large gear 7a, a roller 7b, a wheel shaft 7c and a driving component 7d, an annular cavity 8 is arranged in the middle of the backing plate 3, the annular cavity 8 is positioned above the slideway 4 and is communicated with the end part of the slideway 4, which is opposite to the cushion block 6, the large gear 7a is rotatably arranged in the annular cavity 8, a plurality of waist holes 9 are circumferentially arranged on the large gear 7a, the waist holes 9 are corresponding to the slideway 4 and are radially arranged along the large gear 7a, the bottom end of the wheel shaft 7c is connected with the end part of the supporting rod 5, which faces the piston rod 2, the top end is rotatably connected with the roller 7b, the roller 7b is embedded in the waist holes 9 and is in rolling fit with the waist holes 9, and the driving component 7d is in transmission connection with the large gear 7 a. Before supporting, the driving component 7d drives the large gear 7a to rotate clockwise, the rotation of the large gear 7a forces the roller 7b to move in the waist hole 9 in a rolling way, and then the supporting rod 5 is driven to move in the slideway 4 through the wheel shaft 7c until the roller 7b moves to the outermost end of the waist hole 9, and at the moment, the cushion block 6 is fully expanded.

As shown in fig. 3, the driving assembly 7d includes a pinion 7d1, a rotating shaft 7d2 and a knob 7d3, a cavity 10 is formed in the backing plate 3, the cavity 10 is communicated with the annular cavity 8, the rotating shaft 7d2 is rotatably mounted in the cavity 10, the pinion 7d1 is mounted on the rotating shaft 7d2, the pinion 7d1 is meshed with the large gear 7a, and the top end of the rotating shaft 7d2 extends out of the cavity 10 to be connected with the knob 7d 3. Before supporting, the knob 7d3 is rotated, the knob 7d3 drives the pinion 7d1 to rotate through the rotating shaft 7d2, and the rotation of the pinion 7d1 drives the large gear 7a to rotate clockwise. In order to facilitate the rotation of the knob 7d3, the knob 7d3 is provided with anti-slip patterns 11.

As shown in fig. 2 and 3, the bottom ends of the pad 3 and the cushion block 6 are provided with the anti-slip pad 12, and the friction between the cushion block 6 and the pad 3 and the ground is increased by the arrangement of the anti-slip pad 12, so that the anti-slip effect is further improved.

When the truck crane works, the knob 7d3 is rotated, so that the stay bar 5 slides in the slideway 4 until the cushion block 6 is completely expanded, and then the piston rod 2 drives the cushion plate 3 to descend until the cushion plate 3 is pressed on the ground, and at the moment, the cushion block 6 is also pressed on the ground. After the work is completed, the piston rod 2 drives the backing plate 3 to ascend, and then the knob 7d3 is reversely rotated, so that the cushion block 6 is retracted, and the space is not occupied.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims (6)

1. The utility model provides a landing leg hydro-cylinder for truck-mounted crane, includes cylinder body (1) and piston rod (2), piston rod (2) slip wears to locate cylinder body (1), backing plate (3), its characterized in that are installed to the bottom of piston rod (2): a plurality of slide ways (4) are arranged in the circumferential direction of the base plate (3), a supporting rod (5) is arranged in the slide ways (4) in a sliding mode, the end portion of the supporting rod (5) back to the piston rod (2) protrudes out of the slide ways (4), a cushion block (6) is arranged, the bottom surface of the cushion block (6) is flush with the bottom surface of the base plate (3), and a driving mechanism is arranged in the base plate (3) and used for driving the supporting rods (5) to synchronously slide along the slide ways (4).

2. The truck mounted crane leg cylinder as claimed in claim 1, wherein: the driving mechanism comprises a large gear (7 a), a roller (7 b), a wheel shaft (7 c) and a driving assembly (7 d), wherein an annular cavity (8) is formed in the middle of the base plate (3), the annular cavity (8) is located above the slide way (4) and is communicated with the end part of the slide way (4) back to the cushion block (6), the large gear (7 a) is rotationally arranged in the annular cavity (8), a plurality of waist holes (9) are formed in the circumference of the large gear (7 a), the waist holes (9) are corresponding to the slide way (4) and are formed in the radial direction of the large gear (7 a), the bottom end of the wheel shaft (7 c) is connected with the end part of the supporting rod (5) facing the piston rod (2), the top end of the wheel shaft (7 c) is rotationally connected with the roller (7 b), and the roller (7 b) is embedded in the waist holes (9) and is in rolling fit with the waist holes (9), and the driving assembly (7 d) is in transmission connection with the large gear (7 a).

3. The truck-mounted crane leg cylinder as claimed in claim 2, wherein: the driving assembly (7 d) comprises a pinion (7 d 1), a rotating shaft (7 d 2) and a knob (7 d 3), a cavity (10) is formed in the base plate (3), the cavity (10) is communicated with the annular cavity (8), the rotating shaft (7 d 2) is rotatably mounted in the cavity (10), the pinion (7 d 1) is mounted on the rotating shaft (7 d 2), the pinion (7 d 1) is meshed with the large gear (7 a), and the top end of the rotating shaft (7 d 2) extends out of the cavity (10) to be connected with the knob (7 d 3).

4. A truck mounted crane leg cylinder as claimed in claim 3, wherein: the knob (7 d 3) is provided with anti-skid patterns (11).

5. The truck mounted crane leg cylinder as claimed in claim 1, wherein: anti-slip pads (12) are arranged at the bottom ends of the base plate (3) and the cushion block (6).

6. The truck mounted crane leg cylinder as claimed in claim 1, wherein: the length of the stay bar (5) is longer than that of the slideway (4).