Special hydraulic equipment for lifting and lowering component

Abstract

The utility model discloses special hydraulic equipment for lifting and lowering a component, which relates to the technical field of jacks and comprises a main jack (1) and a supporting leg (2) arranged below the main jack, a piston (3) of the main jack (1) is connected with an upper clamping mechanism (4), and a lower clamping mechanism (5) is arranged in the supporting leg (2). The upper clamping mechanism (4) and the lower clamping mechanism (5) coaxially clamp a rigid cylinder, and an upper clamping displacement sensor (6) and a lower clamping displacement sensor (7) are installed beside the clamping conveying path of the upper clamping mechanism (4) and the clamping conveying path of the lower clamping mechanism (5) respectively. The main jack is provided with a jack displacement sensor (8) for detecting the stroke of the jack; the upper cover and the lower cover of the supporting leg (2) are provided with penetrating holes of the rigid column body; compared with the prior art, the rigid cylinder is automatically clamped through the upper clamping mechanism and the lower clamping mechanism, manual operation is not needed, and working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of jacks, in particular to a special hydraulic device for lifting and lowering components. Background Art

[0002] In recent years, the construction of expressways, railways, subways and other projects in China has developed rapidly. During the construction of engineering projects, the lifting and lowering construction of large components such as Bailey trusses, hanging baskets, and steel supports is involved. Traditional construction lifting and lowering equipment, such as Figure 1 As shown, it consists of a hydraulic through-type jack 101, a support foot 102 is connected below the jack, an upper locking nut 103 is arranged at the center of the top of the jack, a lower locking nut 104 is arranged inside the support foot, and is connected to a component 106 through a precision-threaded steel bar 105. The other end of the precision-threaded steel bar 105 passes through the support foot 102, through the through-type jack and passes through the upper locking nut. The lifting and lowering of the component are realized by the repeated telescoping of the piston of the through-type jack and the alternating force transmission of the upper locking nut and the lower locking nut.

[0003] Such lifting and lowering equipment has the following defects:

[0004] 1. During the working process of the equipment, it is necessary to manually tighten the upper locking nut and the lower locking nut to realize the alternating force transmission, which has a large workload and low work efficiency;

[0005] 2. The lifting and lowering height is limited. Because the upper and lower locking nuts are alternately locked and stressed, only the precision-threaded steel bar can be used in cooperation with the locking nut. The precision-threaded steel bar is a standard part, and its length generally does not exceed 9 meters. If the steel component to be lifted and lowered exceeds 9 meters, it is very difficult to use this equipment to achieve. Content of the Utility Model

[0006] The purpose of the utility model is to provide a special hydraulic device for lifting and lowering components, which can solve the problems of low work efficiency of the existing lifting and lowering equipment and difficulty in lifting and lowering ultra-long steel components.

[0007] To solve the above problems, the technical solution adopted by the utility model is: it includes a main jack and a support foot installed under the main jack. An upper clamping mechanism is connected to the piston of the main jack, and a lower clamping mechanism is installed inside the support foot; the upper clamping mechanism and the lower clamping mechanism coaxially clamp a rigid column. An upper clamping displacement sensor and a lower clamping displacement sensor are respectively installed beside the clamping transmission paths of the upper clamping mechanism and the lower clamping mechanism; the main jack is provided with a jack displacement sensor for detecting the stroke of the jack; through holes for the rigid column to pass through are opened on the upper and lower covers of the support foot.

[0008] In the above technical solution, a more specific solution may further be: the piston of the main jack is connected and fixed to the upper clamping mechanism through an upper clamping support frame.

[0009] Furthermore: the upper clamping mechanism has an upper clamping oil cylinder, the top of which is provided with an upper clamping pressure plate. An upper clamping hollow piston rod is sleeved in the upper clamping oil cylinder. In the middle and lower part of the upper clamping hollow piston rod, there is an upper clamping top and loose sleeve. In the upper clamping hollow piston rod, at the top of the upper clamping top and loose sleeve, there is an upper clamping conical clip group for clamping the rigid column. The large end of the upper clamping conical clip group faces upward. The top of the upper clamping conical clip group is connected to an upper clamping spring seat with an upper clamping spring. The top of the upper clamping spring abuts against the lower part of the upper clamping pressure plate. The bottom of the upper clamping top and loose sleeve is fixed to an upper clamping top and loose plate, which is arranged in the upper clamping support frame. The inner wall of the upper clamping hollow piston rod is provided with a clamping conical surface matching the upper clamping conical clip group. The upper clamping top and loose sleeve is in sliding fit with the upper clamping hollow piston rod. The height of the upper clamping top and loose sleeve is greater than the distance from the lower end hole of the upper clamping hollow piston rod to the small diameter end of the clamping conical surface. The upper clamping pressure plate and the upper clamping top and loose plate are provided with mounting holes for the rigid column.

[0010] Further: the contact surfaces of the upper clamping conical clip group with the upper clamping top and loose sleeve and the upper clamping spring seat are conical surfaces.

[0011] Further: the upper clamping pressure plate is connected and fixed to the upper clamping oil cylinder through an upper clamping pull rod.

[0012] Further: the lower clamping mechanism has a lower clamping oil cylinder, the top of which is provided with a lower clamping pressure plate. A lower clamping hollow piston rod is sleeved in the lower clamping oil cylinder. In the middle and lower part of the lower clamping hollow piston rod, there is a lower clamping top and loose sleeve. In the lower clamping hollow piston rod, at the top of the lower clamping top and loose sleeve, there is a lower clamping conical clip group for clamping the rigid column. The large end of the lower clamping conical clip group faces upward. The top of the lower clamping conical clip group is connected to a lower clamping spring seat with a lower clamping spring. The top of the lower clamping spring abuts against the lower part of the lower clamping pressure plate. The bottom of the lower clamping top and loose sleeve is fixed to a lower clamping top and loose plate, which is arranged in the lower clamping support frame. The inner wall of the lower clamping hollow piston rod is provided with a clamping conical surface matching the lower clamping conical clip group. The lower clamping top and loose sleeve is in sliding fit with the lower clamping hollow piston rod. The height of the lower clamping top and loose sleeve is greater than the distance from the lower end hole of the lower clamping hollow piston rod to the small diameter end of the clamping conical surface. The lower clamping pressure plate and the lower clamping top and loose plate are provided with mounting holes for the rigid column.

[0013] Further: The lower clamping support frame is buckled on a fixing seat provided in the supporting leg, and a mounting hole for the rigid cylinder body is formed in the fixing seat.

[0014] Further: A sensor mounting seat is installed on the cylinder body of the main jack, the jack displacement sensor is installed on the sensor mounting seat, and the probe of the jack displacement sensor touches the lower side surface of the upper clamping support frame when the jack is fully reset.

[0015] Further: An upper clamping sensor mounting seat is installed on the upper part of the outer side surface of the upper clamping support frame, the upper clamping displacement sensor is installed on the upper clamping sensor mounting seat, and the probe of the upper clamping displacement sensor touches the bottom surface of the upper clamping oil cylinder when the upper clamping mechanism is fully reset.

[0016] Further: A lower clamping sensor mounting seat is installed on the upper part of the outer side surface of the lower clamping support frame, the lower clamping displacement sensor is installed on the lower clamping sensor mounting seat, and the probe of the lower clamping displacement sensor touches the bottom surface of the lower clamping oil cylinder when the lower clamping mechanism is fully reset.

[0017] Due to the adoption of the above technical solutions, compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. Since the piston of the main jack is connected with an upper clamping mechanism and a lower clamping mechanism is installed in the supporting leg under the main jack, the upper and lower clamping mechanisms automatically clamp the rigid cylinder body without manual operation, greatly improving the work efficiency.

[0019] 2. Since the rigid cylinder body is clamped by the upper and lower clamping mechanisms, the upper and lower heights of the rigid cylinder body are no longer limited, the rigid cylinder body can be processed by itself, and the length can be freely combined according to multiple moduli without limitation. Description of the Drawings

[0020] Figure 1 is a structural schematic diagram of the prior art.

[0021] Figure 2 is a structural schematic diagram of the present utility model.

[0022] The drawing reference numerals are as follows:

[0023] Main jack 1, support foot 2, piston 3, upper clamping mechanism 4, upper clamping oil cylinder 4-1, upper clamping hollow piston rod 4-2, upper clamping jacking and loosening sleeve 4-3, upper clamping conical clip group 4-4, upper clamping spring seat 4-5, upper clamping spring 4-6, upper clamping pressure plate 4-7, upper clamping jacking and loosening plate 4-8, pressing nail 4-9, upper clamping pull rod 4-10, lower clamping mechanism 5, lower clamping oil cylinder 5-1, lower clamping hollow piston rod 5-2, lower clamping jacking and loosening sleeve 5-3, lower clamping conical clip group 5-4, lower clamping spring seat 5-5, lower clamping spring 5-6, lower clamping pressure plate 5-7, lower clamping jacking and loosening plate 5-8, upper clamping displacement sensor 6, upper clamping sensor mounting seat 6-1, lower clamping displacement sensor 7, lower clamping sensor mounting seat 7-1, jack displacement sensor 8, sensor mounting seat 8-1, upper clamping support frame 9, lower clamping support frame 10, fixed seat 11, steel pipe 12, component 13. Detailed implementation mode

[0024] The present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments:

[0025] As Figure 2The illustrated embodiment includes a main jack 1 and a support leg 2 installed under the main jack. A upper clamping mechanism 4 is connected to the piston 3 of the main jack 1, and a lower clamping mechanism 5 is installed inside the support leg 2. The upper clamping mechanism 4 and the lower clamping mechanism 5 coaxially clamp a rigid column. An upper clamping displacement sensor 6 and a lower clamping displacement sensor 7 are respectively installed beside the clamping and conveying paths of the upper clamping mechanism 4 and the lower clamping mechanism 5. The main jack is provided with a jack displacement sensor 8 for detecting the stroke of the jack. The upper clamping displacement sensor 6, the lower clamping displacement sensor 7, and the jack displacement sensor 8 are respectively connected to a PLC controller to detect and control the corresponding displacement dimensions. Through holes for the rigid column are provided in the upper and lower covers of the support leg 2. The rigid column in this embodiment is a steel pipe 12. The piston 3 of the main jack 1 is fixedly connected to the upper clamping mechanism 4 through an upper clamping support frame 9. The upper clamping mechanism 4 has an upper clamping oil cylinder 4-1. The top of the upper clamping oil cylinder is provided with an upper clamping pressure plate 4-7. An upper clamping hollow piston rod 4-2 is sleeved inside the upper clamping oil cylinder. An upper clamping top and loose sleeve 4-3 is provided in the middle and lower part of the upper clamping hollow piston rod. An upper clamping tapered clip group 4-4 for clamping the steel pipe is provided at the top of the upper clamping hollow piston rod inside the upper clamping top and loose sleeve 4-3. The large end of the upper clamping tapered clip group faces upward. The top of the upper clamping tapered clip group is connected to an upper clamping spring seat 4-5 with an upper clamping spring 4-6. The top of the upper clamping spring abuts against the lower part of the upper clamping pressure plate 4-7. The bottom of the upper clamping top and loose sleeve 4-3 is fixed to an upper clamping top and loose plate 4-8, and the upper clamping top and loose plate is arranged inside the upper clamping support frame 9. The inner wall of the upper clamping hollow piston rod is provided with a clamping conical surface matching the upper clamping tapered clip group. The upper clamping top and loose sleeve 4-3 is in sliding fit with the upper clamping hollow piston rod 4-2. The height of the upper clamping top and loose sleeve 4-3 is greater than the distance from the lower end orifice of the upper clamping hollow piston rod 4-2 to the small diameter end of the clamping conical surface. Through holes for the steel pipe are provided in the upper clamping pressure plate 4-7 and the upper clamping top and loose plate 4-8. The contact surfaces between the upper clamping tapered clip group and the upper clamping top and loose sleeve and the upper clamping spring seat are conical surfaces. The upper clamping pressure plate 4-7 is fixedly connected to the upper clamping oil cylinder 4-1 through an upper clamping pull rod 4-10, and the upper clamping pressure plate 4-7 and the upper clamping pull rod 4-10 are fixed through a pressing nail 4-9. The lower clamping mechanism 5 has a lower clamping oil cylinder 5-1. The top of the lower clamping oil cylinder is provided with a lower clamping pressure plate 5-7. A lower clamping hollow piston rod 5-2 is sleeved inside the lower clamping oil cylinder. A lower clamping top and loose sleeve 5-3 is provided in the middle and lower part of the lower clamping hollow piston rod. A lower clamping tapered clip group 5-4 for clamping the steel pipe 12 is provided at the top of the lower clamping hollow piston rod inside the lower clamping top and loose sleeve 5-3. The large end of the lower clamping tapered clip group faces upward. The top of the lower clamping tapered clip group is connected to a lower clamping spring seat 5-5 with a lower clamping spring 5-6. The top of the lower clamping spring abuts against the lower part of the lower clamping pressure plate 5-7. The bottom of the lower clamping top and loose sleeve 5-3 is fixed to a lower clamping top and loose plate 5-8, and the lower clamping top and loose plate is arranged inside the lower clamping support frame 10.The inner wall of the lower clamping hollow piston rod is provided with a clamping conical surface that matches the lower clamping conical clip group. The lower clamping jacking sleeve 5-3 is in sliding fit with the lower clamping hollow piston rod 5-2, and the height of the lower clamping jacking sleeve 5-3 is greater than the distance from the lower end orifice of the lower clamping hollow piston rod 5-2 to the small-diameter end of the clamping conical surface; through holes for the steel pipe 12 are provided on the lower clamping pressure plate 5-7 and the lower clamping jacking plate 5-8; the lower clamping support frame 10 is buckled on the fixed seat 11 provided in the support leg 2, and a through hole for the steel pipe 12 is provided on this fixed seat; a sensor mounting seat 8-1 is installed on the cylinder body of the main jack 1, and a jack displacement sensor 8 is installed on the sensor mounting seat 8-1. When the jack is fully reset, the probe of the jack displacement sensor 8 touches the lower side surface of the upper clamping support frame 9; an upper clamping sensor mounting seat 6-1 is installed on the upper part of the outer side surface of the upper clamping support frame 9, and an upper clamping displacement sensor 6 is installed on the upper clamping sensor mounting seat 6-1. When the upper clamping mechanism 4 is fully reset, the probe of the upper clamping displacement sensor 6 touches the bottom surface of the upper clamping oil cylinder; a lower clamping sensor mounting seat 7-1 is installed on the upper part of the outer side surface of the lower clamping support frame 10, and a lower clamping displacement sensor 7 is installed on the lower clamping sensor mounting seat 7-1. When the lower clamping mechanism 5 is fully reset, the probe of the lower clamping displacement sensor 7 touches the bottom surface of the lower clamping oil cylinder.;

[0026] When lifting the component: The steel pipe 12 passes through the clamping mechanism 4, the main jack 1, the lower clamping mechanism 5, and the support leg 2 from top to bottom and is connected to the component 13. The upper clamping mechanism clamps, the lower clamping mechanism loosens, oil is supplied to the main jack, the piston of the main jack extends, driving the component to be lifted upward. When one stroke is completed, the lower clamping mechanism clamps, the upper clamping mechanism loosens, the oil is returned to the jack, the piston of the main jack returns, and when the return stroke is in place, the above actions are repeated until the component is lifted to the designed height.

[0027] When lowering the component: The steel pipe 12 passes through the clamping mechanism 4, the main jack 1, the lower clamping mechanism 5, and the support leg 2 from top to bottom and is connected to the component. Both the upper clamping mechanism and the lower clamping mechanism loosen, oil is supplied to the jack, the piston of the main jack extends, and when one stroke is completed, the upper clamping mechanism clamps, the lower clamping mechanism loosens, the oil is returned to the main jack, and the piston of the main jack returns, driving the component to be lowered downward. When the return stroke is in place, the above actions are repeated until the component is lowered to the designed height.

Claims

1. A special hydraulic device for lifting and lowering components, comprising a main jack (1) and a support leg (2) mounted under the main jack, characterized in that: An upper clamping mechanism (4) is connected to the piston (3) of the main jack (1), and a lower clamping mechanism (5) is installed in the support foot (2); the upper clamping mechanism (4) and the lower clamping mechanism (5) coaxially clamp a rigid column, and an upper clamping displacement sensor (6) and a lower clamping displacement sensor (7) are installed beside the clamping transmission paths of the upper clamping mechanism (4) and the lower clamping mechanism (5), respectively; the main jack is provided with a jack displacement sensor (8) for detecting the jack stroke; and the upper and lower covers of the support foot (2) are provided with holes for passing through the rigid column.

2. The hydraulic equipment for lifting and lowering components according to claim 1 is characterized in that: The piston (3) of the main jack (1) is connected and fixed to the upper clamping mechanism (4) via an upper clamping support frame (9).

3. The hydraulic equipment for lifting and lowering components according to claim 2 is characterized in that: The upper clamping mechanism (4) comprises an upper clamping oil cylinder (4-1), the top end of which is provided with an upper clamping pressure plate (4-7), an upper clamping hollow piston rod (4-2) is sleeved in the upper clamping oil cylinder, an upper clamping top loose sleeve (4-3) is provided in the middle and lower part of the upper clamping hollow piston rod, an upper clamping conical clamping piece group (4-4) for clamping the rigid column is provided at the top of the upper clamping top loose sleeve (4-3) in the upper clamping hollow piston rod, the large end of the upper clamping conical clamping piece group faces upward, the top end of the upper clamping conical clamping piece group is connected to an upper clamping spring seat (4-5) with an upper clamping spring (4-6), the top end of the upper clamping spring abuts against the upper clamping pressure plate (4-6). The upper clamping top loose sleeve (4-3) is fixed to the upper clamping top loose plate (4-8), and the upper clamping top loose plate is arranged in the upper clamping support frame (9); the inner wall of the upper clamping hollow piston rod is provided with a clamping cone surface matching the upper clamping conical clamping piece group, the upper clamping top loose sleeve (4-3) is slidably matched with the upper clamping hollow piston rod (4-2), and the height of the upper clamping top loose sleeve (4-3) is greater than the distance from the lower end opening of the upper clamping hollow piston rod (4-2) to the small diameter end of the clamping cone surface; the upper clamping pressure plate (4-7) and the upper clamping top loose plate (4-8) are provided with a through hole for the rigid column.

4. The special hydraulic equipment for lifting and lowering components according to claim 3 is characterized in that: The contact surfaces of the upper clamping conical clamping piece group, the upper clamping top loose sleeve and the upper clamping spring seat are conical surfaces.

5. The special hydraulic equipment for lifting and lowering components according to claim 3 or 4, characterized in that: The upper clamping pressure plate (4-7) is connected and fixed to the upper clamping oil cylinder via an upper clamping pull rod (4-10).

6. The hydraulic equipment for lifting and lowering components according to claim 5 is characterized in that: The lower clamping mechanism (5) comprises a lower clamping oil cylinder (5-1), the top end of which is provided with a lower clamping pressure plate (5-7), a lower clamping hollow piston rod (5-2) is sleeved in the lower clamping oil cylinder, a lower clamping top loose sleeve (5-3) is provided in the middle and lower part of the lower clamping hollow piston rod, a lower clamping conical clamping piece group (5-4) for clamping the rigid column is provided at the top of the lower clamping top loose sleeve (5-3) in the lower clamping hollow piston rod, the large end of the lower clamping conical clamping piece group faces upward, the top end of the lower clamping conical clamping piece group is connected to a lower clamping spring seat (5-5) with a lower clamping spring (5-6), the top end of the lower clamping spring abuts against the lower clamping spring seat (5-6). The lower clamping plate (5-7) is provided with a bottom of the lower clamping top loose sleeve (5-3) fixed on the lower clamping top loose plate (5-8), and the lower clamping top loose plate is arranged in the lower clamping support frame (10); the inner wall of the lower clamping hollow piston rod is provided with a clamping cone surface matching the lower clamping conical clamping piece group, the lower clamping top loose sleeve (5-3) is slidably matched with the lower clamping hollow piston rod (5-2), and the height of the lower clamping top loose sleeve (5-3) is greater than the distance from the lower end opening of the lower clamping hollow piston rod (5-2) to the small diameter end of the clamping cone surface; the lower clamping plate (5-7) and the lower clamping top loose plate (5-8) are provided with a through hole for the rigid column.

7. The special hydraulic equipment for lifting and lowering components according to claim 6 is characterized in that: The lower clamping support frame (10) is buckled onto a fixing seat (11) provided in the support leg (2), and a hole for inserting the rigid column is provided on the fixing seat.

8. The hydraulic equipment for lifting and lowering components according to claim 7 is characterized in that: The cylinder body of the main jack (1) is mounted with a sensor mounting seat (8-1), the sensor mounting seat (8-1) is mounted with the jack displacement sensor (8), and the probe of the jack displacement sensor (8) contacts the lower side of the upper clamping support frame (9) when the jack is fully reset.

9. The special hydraulic equipment for lifting and lowering components according to claim 8, characterized in that: An upper clamping sensor mounting seat (6-1) is mounted on the upper portion of the outer side surface of the upper clamping support frame (9), and the upper clamping displacement sensor (6) is mounted on the upper clamping sensor mounting seat (6-1). When the upper clamping mechanism (4) is completely reset, the probe of the upper clamping displacement sensor (6) contacts the bottom surface of the upper clamping cylinder.

10. The special hydraulic equipment for lifting and lowering components according to claim 9, characterized in that: A lower clamping sensor mounting seat (7-1) is mounted on the upper portion of the outer side surface of the lower clamping support frame (10), and the lower clamping displacement sensor (7) is mounted on the lower clamping sensor mounting seat (7-1). When the lower clamping mechanism (5) is completely reset, the probe of the lower clamping displacement sensor (7) contacts the bottom surface of the lower clamping cylinder.

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