Hydraulic lifting appliance with height difference compensation function

Abstract

The utility model relates to the technical field of hydraulic lifting appliances, and discloses a hydraulic lifting appliance with compensation height difference, which comprises a hydraulic lifting appliance main body, a hydraulic rod is arranged on the lower surface of the hydraulic lifting appliance main body, a first bearing platform is fixedly mounted at the lower end of the hydraulic rod, and an outer side sliding rod is fixedly mounted on the lower surface of the first bearing platform. A first load-bearing platform is fixedly installed on the upper surface of the hydraulic lifting appliance main body, a second load-bearing platform is fixedly installed on the upper surface of the hydraulic lifting appliance main body, a lifting lug is fixedly installed on the upper surface of the second load-bearing platform, and a lifting hook is fixedly installed on the lower surface of the first load-bearing platform. The effect of automatically compensating the height difference when a plurality of movable cranes synchronously and horizontally ascend is achieved, meanwhile, the hydraulic lifting appliance can be simply and conveniently hung on the movable cranes, the movable cranes keep the lifting hook function, and lifting is relatively flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic spreaders, in particular to a hydraulic spreader with height difference compensation function. Background Art

[0002] The supervision and management of construction project quality is an important part of modern construction project management and has a significant impact on the development of the entire construction industry. Especially in recent years, the quality level of construction projects has gradually improved, the domestic construction industry has developed rapidly, the supervision and management level of engineering projects has gradually improved, and the supervision and management of construction safety quality has become more important. The hoisting process of many building components has higher and higher requirements for horizontality, so a hoisting and leveling device that keeps pace with the times is needed.

[0003] At present, when working in the hoisting field, you can choose the lifting method to lift multiple mobile cranes into place. When each crane rises and lifts synchronously, the height of the hook will have a small deviation due to the differences in cranes and human operations. If the lifted objects need to be leveled, manual methods are often used, that is, a commander is appointed to coordinate and command. This leveling method that relies entirely on manual work is inefficient and has limited accuracy. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the utility model provides a hydraulic spreader with height difference compensation, which solves the problem of low efficiency caused by the inability to achieve automatic leveling when multiple mobile cranes are synchronously raised horizontally in the background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the following technical solution is provided: a hydraulic spreader with height difference compensation, comprising a hydraulic spreader body, a hydraulic rod is arranged on the lower surface of the hydraulic spreader body, a first load-bearing platform is fixedly installed on the lower end of the hydraulic rod, an outer slide bar is fixedly installed on the lower surface of the first load-bearing platform, a second load-bearing platform is fixedly installed on the upper surface of the hydraulic spreader body, an inner slide bar is movably installed on the right side of the second load-bearing platform, a lifting ear is fixedly installed on the upper surface of the second load-bearing platform, and a lifting hook is fixedly installed on the lower surface of the first load-bearing platform.

[0008] Preferably, a slide block is fixedly installed on the right surface of the inner slide bar, a load-bearing block is fixedly installed on the right surface of the inner slide bar, a slide plate is fixedly installed on the left surface of the outer slide bar, a groove is opened on the left surface of the outer slide bar, a first spring is fixedly installed on the inner wall of the groove, a sliding block is fixedly installed on the left end of the first spring, a protrusion is fixedly installed on the front and rear surfaces of the sliding block, a first movable rod is movably installed on the inner wall of the groove, a second spring is fixedly installed on the upper and lower sides of the left surface of the first movable rod, a second movable rod is fixedly installed on the left end of the second spring, a limiting groove is opened on the upper surface of the first movable rod, a side plate is fixedly installed on the right surface of the outer slide bar, a hook is movably installed on the front surface of the side plate, a handle is fixedly installed on the upper surface of the hook, hooks are arranged on both sides of the outer slide bar, and the self-locking structure is symmetrically distributed.

[0009] Preferably, a hydraulic and measurement and control system is provided on the upper surface of the second load-bearing platform, the upper end of the hydraulic rod is inserted and connected to the inside of the hydraulic spreader body, and through holes are opened on the front and rear surfaces of the outer sliding rod.

[0010] Preferably, a through hole is provided on the left surface of the skateboard, the rear surface of the second movable rod is movably connected to the inner wall of the groove, the surface of the first movable rod is movably connected to the inner wall of the through hole, the lower surfaces of several sliders are arranged in an inclined shape, and the inclination direction of the slider is opposite to the inclination direction above it.

[0011] Preferably, the protrusion is located between the first movable rod and the second movable rod, the distance between the first movable rod and the hook is greater than the natural length of the second spring between the first movable rod and the second movable rod, the compression stroke of the first spring is smaller than the distance between the second movable rod and the first movable rod, the movable displacement distance of the protrusion is consistent with the length of the first spring in the natural state, and the elastic force of the second spring is greater than the elastic force of the first spring.

[0012] Preferably, a threaded hole is provided on the upper surface of the second load-bearing platform, and a threaded hole plate is fixedly mounted on the left surface of the inner sliding rod.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a hydraulic spreader with height difference compensation, which has the following beneficial effects:

[0015] 1. The hydraulic spreader with height difference compensation function, through the coordinated arrangement of the first load-bearing platform, lifting lugs, hooks, hydraulic pressure and measurement and control systems, not only realizes the effect of automatic compensation for height differences when multiple mobile cranes are synchronously raised horizontally, but also enables the hydraulic spreader to easily mount the mobile crane, and allows the mobile crane to retain the hook function, making the lifting relatively flexible.

[0016] 2. The hydraulic spreader with height difference compensation can prevent the height of the suspended object from dropping due to hydraulic failure of the hydraulic spreader by coordinating the slide block, the load-bearing block, the slide plate, the groove, the first spring, the slider, the protrusion, the first movable rod, the second spring, the second movable rod, the limit groove, the side plate, the hook and the handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the exploded three-dimensional structure of the inner sliding rod and the outer sliding rod of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the upper section of the outer sliding rod of the utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the groove of the outer sliding rod of the utility model;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the main body of the hydraulic spreader of the utility model when in use.

[0022] In the figure: 1. hydraulic spreader body; 2. hydraulic rod; 3. first load-bearing platform; 4. outer slide bar; 5. second load-bearing platform; 6. inner slide bar; 7. lifting lug; 8. hook; 9. slide block; 10. load-bearing block; 11. slide plate; 12. groove; 13. first spring; 14. slide block; 15. protrusion; 16. first movable rod; 17. second spring; 18. second movable rod; 19. limit groove; 20. side plate; 21. hook; 22. handle; 23. hydraulic pressure and measurement and control system. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection.

[0024] Embodiment 1:

[0025] See also Figure 1-5A hydraulic spreader with height difference compensation comprises a hydraulic spreader body 1, a hydraulic rod 2 is arranged on the lower surface of the hydraulic spreader body 1, a first load-bearing platform 3 is fixedly installed on the lower end of the hydraulic rod 2, an outer slide bar 4 is fixedly installed on the lower surface of the first load-bearing platform 3, a second load-bearing platform 5 is fixedly installed on the upper surface of the hydraulic spreader body 1, an inner slide bar 6 is movably installed on the right side of the second load-bearing platform 5, a lifting ear 7 is fixedly installed on the upper surface of the second load-bearing platform 5, a hook 8 is fixedly installed on the lower surface of the first load-bearing platform 3, and a hydraulic and measurement and control system 23 is arranged on the upper surface of the second load-bearing platform 5, the upper end of the hydraulic rod 2 is inserted and connected to the inside of the hydraulic spreader body 1, through holes are opened on the front and rear surfaces of the outer slide bar 4, threaded holes are opened on the upper surface of the second load-bearing platform 5, and a threaded hole plate is fixedly installed on the left surface of the inner slide bar 6.

[0026] Working principle: Before lifting, install an inclination sensor on the hoisted object, and input the distance between the lifting points into the hydraulic and measurement and control system 23 installed on the upper surface of the second load-bearing platform 5. During the lifting process, the hydraulic and measurement and control system 23 can calculate the height difference of the hook 8 of each hydraulic spreader in real time, and control and adjust the hydraulic spreader body 1 through input signals to adjust the position of the hydraulic rod 2 to achieve the effect of adjusting the height on both sides. At the same time, the upper and lower parts of the hydraulic spreader body 1 are respectively provided with lifting ears 7 and hooks 8. This design not only realizes the effect of automatic compensation for the height difference when multiple mobile cranes rise synchronously horizontally, but also realizes that the hydraulic spreader can be easily mounted on the mobile crane, and the mobile crane retains the function of the hook 8, making the lifting relatively flexible.

[0027] Embodiment 2:

[0028] See also Figure 1-5 Based on the first embodiment, the present invention provides a technical solution:

[0029] In this embodiment: a slide block 9 is fixedly installed on the right surface of the inner slide bar 6, a load-bearing block 10 is fixedly installed on the right surface of the inner slide bar 6, a slide plate 11 is fixedly installed on the left surface of the outer slide bar 4, a groove 12 is provided on the left surface of the outer slide bar 4, a first spring 13 is fixedly installed on the inner wall of the groove 12, a slider 14 is fixedly installed on the left end of the first spring 13, a protrusion 15 is fixedly installed on the front and rear surfaces of the slider 14, a first movable rod 16 is movably installed on the inner wall of the groove 12, a second spring 17 is fixedly installed on the upper and lower sides of the left surface of the first movable rod 16, a second movable rod 18 is fixedly installed on the left end of the second spring 17, a limiting groove 19 is provided on the upper surface of the first movable rod 16, a side plate 20 is fixedly installed on the right surface of the outer slide bar 4, A hook 21 is movably installed on the front surface of the side plate 20, and a handle is fixedly installed on the upper surface of the hook 21. A through hole is opened on the left surface of the skateboard 11, and the rear surface of the second movable rod 18 is movably connected to the inner wall of the groove 12. The surface of the first movable rod 16 is movably connected to the inner wall of the through hole. The protrusion 15 is located between the first movable rod 16 and the second movable rod 18. The distance between the first movable rod 16 and the hook 21 is greater than the natural length of the second spring 17 between the first movable rod 16 and the second movable rod 18. The compression stroke of the first spring 13 is smaller than the distance between the second movable rod 18 and the first movable rod 16. The movable displacement distance of the protrusion 15 is consistent with the length of the first spring 13 in the natural state, and the elastic force of the second spring 17 is greater than the elastic force of the first spring 13.

[0030] Working principle: When there is a problem with the hydraulic spreader, such as oil leakage in the oil cylinder or a problem with the hydraulic system, the hydraulic rod 2 is pulled down by the gravity of the load, and the first load-bearing platform 3 moves downward under the drive of the hydraulic rod 2, indirectly driving the outer slide bar 4 to move downward, so that the outer slide bar 4 and the inner slide bar 6 move in opposite directions. At this time, the slider 14 fits with the weighing block, and the resistance provided by the load-bearing block can prevent the hydraulic rod 2 from moving out of the hydraulic spreader body 1, and prevent the goods from falling, which can protect the safety of workers and goods.

[0031] When we need to extend the hydraulic rod 2, we need to pull the slider 14 into the outer slider 4. When the second spring 17 is aged, it may not be possible to pull the entire slider 14 into the outer slider 4. A small part of the slider 14 is outside the outer slider 4. The slider 14 outside the outer slider 4 will collide with the load-bearing block 10. At this time, the lower surface of the slider 14 is designed with a slope shorter than the slope of the upper surface. When a collision occurs, no large resistance will be formed to block the outward movement of the hydraulic rod 2. Instead, the slider 14 is squeezed back into the outer slider 4, solving the problem of the hydraulic rod 2 being blocked from extending outward due to the slider 14 not being able to slide completely into the outer slider 4.

[0032] Due to the limited movement of the inner slide bar 6 and the outer slide bar 4, the hydraulic rod 2 can only perform a retraction movement at this time. When it is necessary to perform an extension movement, pull the movable rod backward. At this time, hold the handle 22 and rotate the hook 21 until the hook 21 can be embedded in the limit groove 19, then stop rotating the handle 22 and pulling the movable rod. When the movable rod is hooked, the second movable rod 18 will be pulled toward the first movable rod 16 under the action of the second spring 17. Due to the setting of the protrusion 15 of the slider 14, the second movable rod 18 will drive the slider 14 into the outer slide bar 4 while being pulled. If the slider 14 is extended by the hydraulic rod 2 or bears the gravity of the load at this time, the slider 14 will not be driven by the fixed rod. After the hydraulic rod 2 needs to be retracted to reduce the friction between the slider 14 and the load-bearing block 10, the slider 14 will slide into the outer slide bar 4 under the pulling of the second movable rod 18. This design can prevent the height of the suspended object from dropping due to a hydraulic failure of the hydraulic sling. Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic spreader with height difference compensation, comprising a hydraulic spreader body (1), characterized in that: A hydraulic rod (2) is provided on the lower surface of the hydraulic spreader body (1), a first load-bearing platform (3) is fixedly mounted on the lower end of the hydraulic rod (2), an outer sliding rod (4) is fixedly mounted on the lower surface of the first load-bearing platform (3), a second load-bearing platform (5) is fixedly mounted on the upper surface of the hydraulic spreader body (1), an inner sliding rod (6) is movably mounted on the right side of the second load-bearing platform (5), a lifting lug (7) is fixedly mounted on the upper surface of the second load-bearing platform (5), and a lifting hook (8) is fixedly mounted on the lower surface of the first load-bearing platform (3).

2. The hydraulic spreader with height difference compensation according to claim 1, characterized in that: A slide block (9) is fixedly mounted on the right surface of the inner slide bar (6), a load-bearing block (10) is fixedly mounted on the right surface of the inner slide bar (6), a slide plate (11) is fixedly mounted on the left surface of the outer slide bar (4), a groove (12) is formed on the left surface of the outer slide bar (4), a first spring (13) is fixedly mounted on the inner wall of the groove (12), a slide block (14) is fixedly mounted on the left end of the first spring (13), a protrusion (15) is fixedly mounted on the front and rear surfaces of the slide block (14), and the groove (12) is provided with a first spring (13) and a first spring (13) is fixedly mounted on the inner wall of the groove (12). A first movable rod (16) is movably mounted on the inner wall of the outer sliding rod (4), a second spring (17) is fixedly mounted on the upper and lower sides of the left surface of the first movable rod (16), a second movable rod (18) is fixedly mounted on the left end of the second spring (17), a limiting groove (19) is provided on the upper surface of the first movable rod (16), a side plate (20) is fixedly mounted on the right surface of the outer sliding rod (4), a hook (21) is movably mounted on the front surface of the side plate (20), and a handle (22) is fixedly mounted on the upper surface of the hook (21).

3. The hydraulic spreader with height difference compensation according to claim 1, characterized in that: The upper surface of the second load-bearing platform (5) is provided with a hydraulic and measurement and control system (23); the upper end of the hydraulic rod (2) is inserted and connected to the inside of the hydraulic spreader body (1); and through holes are provided on the front and rear surfaces of the outer sliding rod (4).

4. The hydraulic spreader with height difference compensation according to claim 2, characterized in that: A through hole is formed on the left surface of the slide plate (11); the rear surface of the second movable rod (18) is movably connected to the inner wall of the groove (12); the surface of the first movable rod (16) is movably connected to the inner wall of the through hole; the lower surfaces of the plurality of sliders (14) are arranged in an inclined shape, and the inclined direction of the sliders (14) is opposite to the inclined direction of their upper parts.

5. The hydraulic spreader with height difference compensation according to claim 2, characterized in that: The projection (15) is located between the first movable rod (16) and the second movable rod (18); the distance from the first movable rod (16) to the hook (21) is greater than the natural length of the second spring (17) between the first movable rod (16) and the second movable rod (18); the compression stroke of the first spring (13) is less than the distance between the second movable rod (18) and the first movable rod (16); the movable displacement distance of the projection (15) is consistent with the length of the first spring (13) in the natural state; and the elastic force of the second spring (17) is greater than the elastic force of the first spring (13).

6. The hydraulic spreader with height difference compensation according to claim 1, characterized in that: A threaded hole is provided on the upper surface of the second load-bearing platform (5), and a threaded hole plate is fixedly mounted on the left surface of the inner sliding rod (6).

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