Hydraulic steering mechanism of engineering machinery

Abstract

The utility model discloses a hydraulic steering mechanism for engineering machinery, which belongs to the technical field of hydraulic steering mechanisms and comprises a hydraulic steering gear and a first rotating shaft mounted on the hydraulic steering gear, a telescopic sleeve is sleeved on the outer wall of the first rotating shaft, and a second rotating shaft is rotatably connected in the first rotating shaft. The first rotating shaft comprises a rotating shaft and an extending cylinder installed at the lower end of the rotating shaft, four clamping plates are installed on the lower portion of the extending cylinder, a fixing sleeve is slidably connected to the outer wall of the extending cylinder, and a plurality of clamping blocks are installed on the fixing sleeve. According to the utility model, when in use, the first rotating shaft can be pulled out for extension, after the extension to a proper position as required, the second rotating shaft is rotated by an angle, so that the jacking block can jack the clamping plate so as to be matched with the clamping block for clamping and effective fixation, and similarly, the clamping plate can be reset only by reversely rotating during resetting; and the device can be flexibly adjusted according to requirements and is convenient and practical.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of hydraulic steering mechanism, in particular to a kind of engineering machinery hydraulic steering mechanism, belong to hydraulic steering mechanism technical field. BACKGROUND

[0002] Engineering machinery is an important component of equipment industry, and is generally referred to as engineering machinery for the necessary mechanical equipment required for comprehensive mechanized construction engineering of earthwork construction engineering, pavement construction and maintenance, mobile hoisting and unloading operations and various building engineering.

[0003] In the prior art, such as China authorized patent CN202420058664.2, a kind of engineering machinery hydraulic steering mechanism, damping block and spring are installed between the shaft and the sleeve, which can play a certain damping effect, thereby reducing the vibration of steering wheel, rotating drum and extension cylinder are installed in the sleeve, the height can be adjusted by rotating the rotating drum, which is relatively convenient to adjust and improves the adjustment efficiency.

[0004] However, the height cannot be effectively fixed during adjustment, which affects the use of the steering mechanism. UTILITY MODEL CONTENT

[0005] The main purpose of the utility model is to solve the problem that the height cannot be effectively fixed during adjustment, which affects the use of the steering mechanism, and provide a kind of engineering machinery hydraulic steering mechanism.

[0006] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0007] A kind of engineering machinery hydraulic steering mechanism, comprising hydraulic steering gear and first shaft installed on the hydraulic steering gear, the outer wall of the first shaft is sleeved with telescopic sleeve, the inside of the first shaft is rotatably connected with second shaft, the first shaft includes rotating shaft and extension cylinder installed at the lower end of the rotating shaft, the lower part of the extension cylinder is installed with four clamping plates, the outer wall of the extension cylinder is slidably connected with fixed sleeve, a plurality of clamping blocks are installed on the fixed sleeve.

[0008] Further, the lower part of the extension cylinder is provided with four cavities for the movement of the clamping plate.

[0009] Further, assembly groove is formed in one end of the clamping plate.

[0010] Further, positioning column is arranged in the assembly groove, and spring is sleeved on the positioning column.

[0011] Further, the other end of the clamping plate is provided with inclined table.

[0012] Further, the second rotating shaft comprises a connecting rod and four top blocks mounted at the lower end of the connecting rod.

[0013] Further, one end of the top block is provided with an inclined surface.

[0014] Further, the lower end of the extension cylinder is provided with a positioning threaded ring.

[0015] Further, the lower end of the connecting rod is threadedly connected with the positioning threaded ring.

[0016] The beneficial technical effects of the utility model are as follows: according to the engineering machinery hydraulic steering mechanism of the utility model, when in use, the first rotating shaft can be pulled out to extend, after extending to a suitable position according to requirements, the second rotating shaft is rotated, so that the top block can abut against the clamping plate, and then the clamping plate can be clamped and fixed by cooperating with the clamping block, and when resetting, the clamping plate can be reset only by being reversely rotated, and the utility model can be flexibly adjusted according to requirements, and is convenient and practical. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view according to a preferred embodiment of the utility model;

[0018] Figure 2 It is a whole structure side view according to a preferred embodiment of the utility model;

[0019] Figure 3 It is a first rotating shaft and second rotating shaft structure schematic view according to a preferred embodiment of the utility model;

[0020] Figure 4 It is an extension cylinder and fixed sleeve structure schematic view according to a preferred embodiment of the utility model;

[0021] Figure 5 It is a fixed sleeve and clamping block assembly structure schematic view according to a preferred embodiment of the utility model;

[0022] Figure 6 It is a positioning threaded ring assembly structure schematic view according to a preferred embodiment of the utility model;

[0023] Figure 7 It is a clamping plate structure schematic view according to a preferred embodiment of the utility model;

[0024] Figure 8 It is a second rotating shaft structure schematic view according to a preferred embodiment of the utility model.

[0025] In the diagram: 1. Hydraulic steering gear; 2. Telescopic sleeve; 3. First rotating shaft; 4. Second rotating shaft; 5. Fixed sleeve; 6. Clamping block; 7. Extension cylinder; 8. Clamping plate; 9. Positioning threaded ring; 10. Top block. Detailed Implementation

[0026] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0027] like Figures 1-8 As shown, the hydraulic steering mechanism for engineering machinery provided in this embodiment includes a hydraulic steering gear 1 and a first rotating shaft 3 mounted on the hydraulic steering gear 1. A telescopic sleeve 2 is fitted onto the outer wall of the first rotating shaft 3 for protection during use, and sound insulation cotton can be inserted inside for sound insulation. A second rotating shaft 4 is rotatably connected inside the first rotating shaft 3. The first rotating shaft 3 includes a rotating shaft and an extension cylinder 7 mounted at the lower end of the rotating shaft. Four clamping plates 8 are mounted on the lower part of the extension cylinder 7. A fixed sleeve 5 is slidably connected to the outer wall of the extension cylinder 7. Several clamping blocks 6 are mounted on the fixed sleeve 5. Four cavities for the movement of the clamping plates 8 are opened in the lower part of the extension cylinder 7. One end of each clamping plate 8 is provided with a mounting... The mounting slot contains a positioning post with a spring attached. The spring allows the clamping plate 8 to be reset. The other end of the clamping plate 8 has a ramp to facilitate the rotation of the second rotating shaft 4, which moves the clamping plate 8 outward for locking. The second rotating shaft 4 includes a connecting rod and four top blocks 10 installed at the lower end of the connecting rod. One end of each top block has a ramp. The lower end of the extension cylinder 7 has a positioning threaded ring 9 with upper and lower limits to prevent excessive rotation. It can rotate 45-60 degrees with the thread on the lower end of the connecting rod. The lower end of the connecting rod is threaded to the positioning threaded ring 9, which fixes the second rotating shaft 4 when it rotates.

[0028] When in use, it can be extended outward by pulling out the first rotating shaft 3. After being extended to the appropriate position as needed, the top block 10 can be pushed against the card plate 8 by rotating the second rotating shaft 45 degrees, so that it can be locked in place with the card block 6 for effective fixation. Similarly, when resetting, it is only necessary to rotate in the opposite direction to reset the card plate 8. It can be flexibly adjusted as needed, which is convenient and practical.

[0029] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A hydraulic steering mechanism for engineering machinery, comprising a hydraulic steering gear (1) and a first rotating shaft (3) mounted on the hydraulic steering gear (1), characterized in that, The outer wall of the first rotating shaft (3) is fitted with a telescopic sleeve (2), and the inner wall of the first rotating shaft (3) is rotatably connected to a second rotating shaft (4). The first rotating shaft (3) includes a rotating shaft and an extension cylinder (7) installed at the lower end of the rotating shaft. Four clamping plates (8) are installed at the lower part of the extension cylinder (7). A fixing sleeve (5) is slidably connected to the outer wall of the extension cylinder (7), and several clamping blocks (6) are installed on the fixing sleeve (5).

2. The hydraulic steering mechanism for engineering machinery according to claim 1, characterized in that, The lower part of the extension tube (7) has four cavities for the movement of the card plate (8).

3. The hydraulic steering mechanism for engineering machinery according to claim 2, characterized in that, An assembly groove is provided on one end of the card plate (8).

4. The hydraulic steering mechanism for engineering machinery according to claim 3, characterized in that, A positioning post is provided in the assembly slot, and a spring is sleeved on the positioning post.

5. A hydraulic steering mechanism for engineering machinery according to claim 4, characterized in that, A ramp is provided at the other end of the card plate (8).

6. A hydraulic steering mechanism for engineering machinery according to claim 5, characterized in that, The second rotating shaft (4) includes a connecting rod and four top blocks (10) installed at the lower end of the connecting rod.

7. A hydraulic steering mechanism for engineering machinery according to claim 6, characterized in that, One end of the top block is provided with a slope.

8. A hydraulic steering mechanism for engineering machinery according to claim 7, characterized in that, The lower end of the extension cylinder (7) is provided with a positioning threaded ring (9).

9. A hydraulic steering mechanism for engineering machinery according to claim 8, characterized in that, The lower end of the connecting rod is threadedly connected to the positioning threaded ring (9).

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