A detachable jacking device and axial displacement adjusting method thereof

Abstract

The present application relates to heavy equipment precision displacement adjustment technical field, disclose a kind of detachable jacking device and its axial displacement adjustment method, for solving the problem that existing adjustment scheme cannot consider high linearity and high reliability simultaneously.The device includes fixed seat installed on the equipment base by fixed seat fastener, sliding rail inclined iron with sliding inclined surface, slider fixed with inclined iron, stop block detachably connected to fixed seat and top screw provided on stop block.Fixed seat is provided with force bearing inclined surface matched with inclined surface of inclined iron.When adjusting, top screw is operated to drive inclined iron to slide along the inclined surface of fixed seat, and equipment is lifted and moved by slider;after being in place, stop block is removed and top screw is operated to remove inclined iron and slider as a whole, so that equipment is placed on base structure.The present application realizes high linearity displacement adjustment of heavy equipment, and adjustment structure can be removed in working cycle, which avoids damage caused by continuous force bearing, and has high reliability.

Description

Technical Field

[0001] This invention relates to the field of precision displacement adjustment technology for heavy equipment, and in particular to a detachable lifting device and its axial displacement adjustment method. Background Technology

[0002] Engine test benches are key facilities for studying the ground performance of large power plants such as aero engines. When conducting tests on different models, it is often necessary to precisely adjust the axial position of the air intake equipment and other components on the test bench according to the length of the test piece to align with test pieces of different lengths. This places extremely high demands on the linearity of the adjustment structure and its long-term operational reliability.

[0003] Currently, there are two main types of common axial displacement adjustment solutions: the rail-pulley solution and the linear guide solution. The rail-pulley solution has a large structural size, requires complex integration with the equipment support, and the clearance between the pulley and the rail results in low linearity of axial movement. After reaching its designated position, additional limiting and fixing structures are needed, making the overall solution complex. While the linear guide solution provides good linearity, its guide rail slider must permanently bear the weight of the equipment and complex loads such as vibration and torque during testing. Under long-term high-load conditions, the precision internal ball bearings or slider rails are prone to deformation or damage, resulting in low reliability and high maintenance costs.

[0004] Therefore, how to design an adjustment structure that can achieve high linearity of axial movement of heavy equipment and release it from the stress state after the equipment is in place, thereby avoiding damage in long-term, high-load working environments, and thus balancing adjustment accuracy and operational reliability, has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] This invention provides a detachable lifting device and its axial displacement adjustment method to solve the technical problem that existing axial displacement adjustment schemes for heavy equipment cannot simultaneously achieve high linearity and high reliability.

[0006] On one hand, the present invention provides a detachable lifting device, comprising: A mounting bracket is used to mount the device to be adjusted onto its base via mounting bracket fasteners. A sliding inclined rail has a sliding inclined surface; The slider is fixedly connected to the inclined rail. The stop block is detachably connected to the fixed base; A set screw is operably disposed on the stop block; The fixed base is provided with a load-bearing inclined surface that cooperates with the sliding inclined surface of the slide rail; operating the set screw can drive the slide rail to move, so that its sliding inclined surface slides along the load-bearing inclined surface of the fixed base, thereby lifting or lowering the device to be adjusted through the slider.

[0007] According to the present invention, a detachable lifting device is provided in which the end of the slide rail wedge is provided with a threaded hole that mates with the set screw; after the stop block is removed, the set screw is engaged with the threaded hole at the end of the slide rail wedge, and operating the set screw can drive the slide rail wedge to retract from under the fixed seat.

[0008] According to a detachable lifting device provided by the present invention, the slider is fixedly connected to the inclined rail by an inclined iron fastener, and the stop block is detachably fixed to one end of the fixed base by a stop block fastener.

[0009] According to the present invention, a detachable lifting device is provided, wherein the slider is a linear guide rail slider.

[0010] According to the present invention, a detachable lifting device is provided, wherein the fixing seat fastener is a bolt.

[0011] According to the present invention, a detachable lifting device is provided, wherein the bottom of the fixed base is provided with an opening or guide structure for accommodating and guiding the slide rail wedge and the slider.

[0012] On the other hand, the present invention provides a method for adjusting axial displacement using a detachable lifting device, comprising the following steps: S1. Install the fixing seat onto the bottom of the base of the device to be adjusted using fixing seat fasteners; S2. Place the slider with the fixed slide rail wedge at the initial position below the fixed base; S3. Install the stop block onto the fixing seat; S4. Operate the set screw to drive the slide rail wedge to move, so that its sliding inclined surface slides along the load-bearing inclined surface of the fixed seat, thereby lifting the device to be adjusted through the slider and transferring the weight of the device to the slider; S5. Under the condition that the slider is under load, move the device to be adjusted to the target position; S6. Remove the stop block, operate the set screw to drive the slide rail wedge to move in the opposite direction, so that the slider carrying the slide rail wedge exits from under the fixed seat, so that the device to be adjusted is placed on the foundation structure.

[0013] According to the present invention, an axial displacement adjustment method using a detachable lifting device is provided. In step S1, at least four fixed seats are symmetrically installed on the base of the device to be adjusted. In step S4, the lifting screws of each lifting device are operated synchronously or sequentially to lift the device smoothly.

[0014] According to the present invention, an axial displacement adjustment method using a detachable lifting device is provided. In step S6, after removing the stop block, the set screw is screwed into the threaded hole at the end of the slide rail wedge, and the slide rail wedge and the slider are driven to retract by screwing in the set screw.

[0015] According to the present invention, an axial displacement adjustment method using a detachable lifting device is provided. In step S2, the direction in which the slider is pushed in is consistent with the axial direction to be adjusted of the device to be adjusted; in step S6, the direction in which the slider is withdrawn is opposite to the direction in which it is pushed in.

[0016] Compared with the prior art, the detachable lifting device and its axial displacement adjustment method provided by this invention have the following advantages: (1) The present invention provides a detachable lifting device and its axial displacement adjustment method. Through the core design of "detachable", the lifting device only intervenes and bears force when the equipment needs to be moved. After the precise movement is completed, the entire device can be removed, allowing the weight of the equipment to be fully borne by the solid foundation structure. This fundamentally avoids the precision adjustment components (such as linear guide sliders) from continuously bearing severe loads in long-term testing, thereby greatly improving the service life and operational reliability of the entire adjustment system and solving the pain point of easy damage in existing linear guide solutions.

[0017] (2) The present invention provides a detachable lifting device and its axial displacement adjustment method, which realizes the movement of equipment in the lifting state through the precise fit between the inclined surface of the slide rail and the fixed seat, and the high linearity of the slider (such as the linear guide rail slider). This structure inherits the high linearity advantage of the linear guide rail scheme, which can ensure that the trajectory of heavy equipment is accurate and stable during axial movement, effectively overcomes the defect of low linearity of the rail pulley scheme, and meets the process requirements of high-precision docking.

[0018] (3) The detachable lifting device and its axial displacement adjustment method provided by the present invention cleverly realize the bidirectional driving function of "lifting" and "pulling out" by using the same set of jacking screws in conjunction with the threaded holes at the ends of the stop block and the inclined iron of the slide rail. During lifting, the jacking screw pushes the end face of the inclined iron for fine adjustment; during withdrawal, the jacking screw is screwed into the threaded hole of the inclined iron to pull out the entire adjustment unit in the opposite direction. The design structure is simple, the operation process is smooth and convenient, and the operation difficulty and adjustment time are significantly reduced.

[0019] (4) The detachable lifting device and its axial displacement adjustment method provided by the present invention adopt a modular design, with a compact overall structure, without occupying additional equipment height space, and without requiring large-scale modification of existing equipment supports. The lifting device can be easily installed and disassembled, realizing "plug and play", and improving the adaptability and deployment flexibility of the equipment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the detachable lifting device provided by the present invention; Figure 2 This is a schematic diagram of the lifting process of the detachable lifting device provided by the present invention; Figure 3 This is a schematic diagram of the lowering and exiting process of the detachable lifting device provided by the present invention.

[0022] Figure label: 1. Fixed base; 2. Fixed base fastener; 3. Base of the device to be adjusted; 4. Slide rail wedge; 5. Slider; 6. Stop block; 7. Set screw; 8. Wedge fastener; 9. Stop block fastener. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0024] The following is combined Figures 1-3 This invention describes a detachable lifting device and its axial displacement adjustment method.

[0025] Figure 1 This is a structural schematic diagram of the detachable lifting device provided by the present invention.

[0026] like Figure 1As shown, the present invention provides a detachable lifting device, mainly used for precision axial position adjustment of heavy equipment. The core design concept of this device is "detachable," that is, after the equipment is lifted and moved axially, the load-bearing and adjusting components can be removed as a whole, so that the weight of the equipment is entirely borne by the robust foundation structure. This greatly improves the reliability and durability of long-term use while ensuring high linearity adjustment.

[0027] Specifically, the device includes a fixed base 1, a slide rail wedge 4, a slider 5, a stop block 6, and a set screw 7.

[0028] In this invention, the fixed base 1 serves as the base of the device and is securely mounted on the reserved mounting surface of the base 3 of the device to be adjusted via fixed base fasteners 2. The bottom of the fixed base 1 has a downward-opening accommodating space and a load-bearing inclined surface. The angle between the load-bearing inclined surface and the horizontal plane, i.e., the inclined angle, is a key design parameter that needs to be balanced between meeting the lifting force requirements and the self-locking capability of the device. In a preferred embodiment of this invention, this angle ranges from 5° to 15°. One end of the fixed base 1 has a connecting portion for mounting a stop block 6.

[0029] In this invention, the slide rail wedge 4 is a direct lifting actuator. Its upper part has a sliding inclined surface that matches the load-bearing inclined surface of the fixed base 1; the two fit precisely together to ensure a smooth and unobstructed lifting process. The bottom surface of the slide rail wedge 4 is rigidly connected to the slider 5 via wedge fasteners 8. A threaded hole is provided at the end of the slide rail wedge 4, near the stop block 6.

[0030] In this invention, the slider 5 is preferably a high-precision, high-load-bearing linear guide slider. It cooperates with a section of linear guide laid on the ground or foundation to provide highly linear guidance for the axial movement of the equipment after lifting. After the slider 5 is fixed to the guide rail wedge 4, it forms an "adjustment unit" integrating lifting and guiding functions.

[0031] In this invention, the stop block 6 serves as a detachable safety limit and operating base, mounted on the connecting part at the end of the fixed base 1 via stop block fasteners 9. The core function of the stop block 6 is to act as a mechanical stop for the axial movement of the slide rail wedge 4 during the lifting process, preventing it from accidentally dislodging from the fixed base 1 under the lifting force, thus ensuring operational safety. Simultaneously, the stop block 6 is machined with threaded holes for installing the set screw 7.

[0032] In this invention, the set screw 7, typically an adjusting bolt, is a key operating component for achieving bidirectional "pull-in" and "pull-out" drive. Its function and connection method vary depending on the operating stage. Lifting stage: After the stop block 6 is installed in place, rotate the top screw 7 in the forward direction. Its end directly pushes against the smooth end face of the slide rail wedge 4, driving the entire "adjustment unit" to move into the fixed base 1. Due to the effect of the inclined surface, the slide rail wedge 4 generates vertical displacement while moving horizontally, thereby smoothly lifting the equipment base 3 through the slider 5.

[0033] Positioning and Removal Stage: When it is necessary to remove the adjustment unit, first remove the stop block 6, then screw the set screw 7 into the special threaded hole at the end of the slide rail wedge 4. Continue to rotate the set screw 7 in the forward direction. At this time, its tail will press against the corresponding force-bearing surface of the equipment base 3 or the fixed seat 1, thereby generating a reverse pulling force, which will smoothly pull the slide rail wedge 4 together with the slider 5 from under the fixed seat 1, realizing the controllable removal of the adjustment unit.

[0034] In a preferred embodiment of the present invention, the side wall of the accommodating space at the bottom of the fixed base 1 may also be provided with a guide key or a guide groove, and the corresponding side of the slide rail inclined iron 4 is provided with a guide structure to ensure that the slide rail inclined iron 4 can only move along the preset inclined trajectory, prevent deflection, and further improve the linearity and stability of the lifting.

[0035] In a preferred embodiment of the present invention, the fixed seat fastener 2, the wedge fastener 8, and the stop block fastener 9 can all be anti-loosening bolts or equipped with anti-loosening washers to adapt to the vibration environment that may exist during equipment testing and ensure connection reliability.

[0036] Figure 2 This is a schematic diagram of the lifting process of the detachable lifting device provided by the present invention; Figure 3 This is a schematic diagram of the lowering and exiting process of the detachable lifting device provided by the present invention.

[0037] like Figure 2 and Figure 3 As shown, the present invention provides an axial displacement adjustment method using a detachable lifting device, which, based on the aforementioned detachable lifting device, specifically includes the following steps: S1. Based on the weight and center of gravity distribution of the equipment to be adjusted, select at least four mounting points symmetrically on the bottom of its base 3. For large equipment, four or more are usually required. Securely install the fixing base 1 on each mounting point using the fixing fastener 2.

[0038] In this invention, during installation, it is necessary to ensure that the bottom surfaces of all the mounting brackets 1 are basically aligned.

[0039] S2. The "adjustment unit" consisting of the slider 5, which is pre-assembled by the wedge fastener 8 and has the wedge rail 4 fixed to it, is placed in the initial position below the fixed base 1.

[0040] In this invention, during placement, it is necessary to ensure that the slider 5 is accurately positioned on the laid linear guide rail, and that the sliding inclined surface of the guide rail wedge 4 is initially in contact with the load-bearing inclined surface of the fixed base 1. The direction in which the slider 5 is pushed in should be consistent with the axial direction of the subsequent adjustment and movement of the equipment, so as to directly utilize its guiding function.

[0041] S3. Install a stop block 6 at the end of each fixed seat 1 and lock it with the stop block fastener 9. At this time, the set screw 7 should be aligned with the mating hole at the end of the slide rail inclined iron 4.

[0042] S4. The operator uses a wrench or other tools to rotate the set screws 7 of each device synchronously or diagonally. The set screws 7 push the slide rail wedge 4, causing its sliding inclined surface to slide along the load-bearing inclined surface of the fixed base 1. This process gradually and smoothly transfers the weight of the equipment from the base structure to each slider 5 until the equipment base 3 is completely detached from the original support surface and is in a lifted state. Because the end of the set screw 7 directly abuts against the end face of the slide rail wedge 4, its advancing distance can be precisely controlled, thereby achieving smooth lifting of the equipment and fine adjustment of its height. The weight of the equipment is completely transferred to the slider 5.

[0043] In a preferred embodiment of the present invention, the lifting process should be carried out slowly, and the lifting height of each point on the equipment base 3 should be monitored by measuring instruments to ensure that the lifting is stable and level.

[0044] S5. With the weight of the equipment fully supported by all the sliders 5, the equipment is slowly dragged using an external traction device. Because the sliders 5 slide on the highly linear guide rails, the equipment can be precisely moved to the target axial position.

[0045] S6. Loosen and remove the stop block fastener 9, and remove the stop block 6 along with the set screw 7 mounted on it from the fixed base 1. Screw the set screw 7 into the special threaded hole at the end of the slide rail wedge 4, and continue to rotate it in the same direction as during lifting. Since the threaded part of the set screw 7 is connected to the slide rail wedge 4, and its tail will press against the corresponding force-bearing surface of the base 3 or fixed base 1 of the equipment to be adjusted, rotating the set screw 7 will generate a force that pulls the slide rail wedge 4 outward. This operation drives the slide rail wedge 4 to slide outward along the force-bearing inclined surface of the fixed base 1, causing the slider 5 to retract. As the "adjustment unit" is pulled out, the equipment base 3 descends smoothly until it is completely placed on the foundation structure. Remove the completely detached "adjustment unit" from under the fixed base 1. At this point, all adjustment mechanisms are removed, and the equipment enters the working state.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detachable lifting device, characterized in that, include: A mounting base (1) is used to be mounted on the base (3) of the device to be adjusted via mounting base fasteners (2); The inclined rail (4) has a sliding inclined surface; The slider (5) is fixedly connected to the inclined rail (4); The stop (6) is detachably connected to the fixed base (1); A set screw (7) is operably disposed on the stop (6); The fixed base (1) is provided with a load-bearing inclined surface that cooperates with the sliding inclined surface of the slide rail (4); the operation of the top screw (7) can drive the slide rail (4) to move, so that its sliding inclined surface slides along the load-bearing inclined surface of the fixed base (1), and then the device to be adjusted is lifted or lowered by the slider (5).

2. The detachable lifting device according to claim 1, characterized in that, The end of the slide rail wedge (4) is provided with a threaded hole that mates with the set screw (7); after removing the stop block (6), the set screw (7) is engaged with the threaded hole at the end of the slide rail wedge (4), and operating the set screw (7) can drive the slide rail wedge (4) to exit from below the fixed seat (1).

3. The detachable lifting device according to claim 1, characterized in that, The slider (5) is fixedly connected to the slide rail inclined iron (4) by the inclined iron fastener (8); the stop block (6) is detachably fixed to one end of the fixed seat (1) by the stop block fastener (9).

4. The detachable lifting device according to claim 1, characterized in that, The slider (5) is a linear guide slider.

5. The detachable lifting device according to claim 1, characterized in that, The fixing fastener (2) is a bolt.

6. The detachable lifting device according to claim 1, characterized in that, The bottom of the fixed base (1) is provided with an opening or guide structure for accommodating and guiding the slide rail wedge (4) and the slider (5).

7. A method for adjusting the axial displacement using the detachable lifting device as described in any one of claims 1 to 6, characterized in that, Includes the following steps: S1. Install the fixing seat (1) onto the bottom of the base (3) of the device to be adjusted using the fixing seat fastener (2); S2. Place the slider (5) with the fixed slide rail wedge (4) in the initial position below the fixed seat (1); S3. Install the stop block (6) onto the fixed base (1); S4. Operate the top screw (7) to drive the slide rail wedge (4) to move, so that its sliding inclined surface slides along the load-bearing inclined surface of the fixed seat (1), thereby lifting the device to be adjusted through the slider (5) and transferring the weight of the device to the slider (5); S5. Under the load-bearing state of the slider (5), move the device to be adjusted to the target position; S6. Remove the stop block (6), operate the top screw (7) to drive the slide rail wedge (4) to move in the opposite direction, so that the slider (5) carries the slide rail wedge (4) out from under the fixed seat (1), so that the device to be adjusted is placed on the foundation structure.

8. The axial displacement adjustment method according to claim 7, characterized in that, In step S1, at least four fixed seats (1) are symmetrically installed on the base (3) of the device to be adjusted; in step S4, the top screws (7) of each lifting device are operated synchronously or sequentially to lift the device smoothly.

9. The axial displacement adjustment method according to claim 7, characterized in that, In step S6, after removing the stop block (6), the set screw (7) is screwed into the threaded hole at the end of the slide rail wedge (4), and the slide rail wedge (4) and the slider (5) are driven to exit by screwing in the set screw (7).

10. The axial displacement adjustment method according to claim 7, characterized in that, In step S2, the direction in which the slider (5) is pushed in is consistent with the axial direction that the device to be adjusted needs to be adjusted; in step S6, the direction in which the slider (5) is pulled out is opposite to the direction in which it is pushed in.

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