A building engineering wall positioning and installing device

Abstract

This application relates to the field of prefabricated building installation technology, and discloses a wall positioning and installation device for building engineering. The device includes a base plate, which is a rectangular plate structure; a support frame, disposed at one end of the base plate and perpendicular to it; a lower bracket, hinged to the support frame and perpendicular to the base plate; a tie rod, hinged to the other end of the base plate, with an upper bracket hinged to the other end; and a positioning rod, hinged at one end to one side of the support frame and at the other end to the tie rod in the middle. This device achieves the following technical effects: through the design of the support frame and tie rod, precise positioning and subsequent stable support of the prefabricated wall can be achieved; the lower and upper brackets can be raised and lowered, facilitating alignment and connection between the prefabricated wall and the ground reinforcement, ensuring the accuracy of the wall installation position.

Description

Technical Field

[0001] This application relates to the field of prefabricated building installation technology, such as a wall positioning and installation device for building engineering. Background Technology

[0002] Currently, prefabricated construction is a modern construction method. It involves prefabricating some or all of the building components in a factory, then transporting them to the construction site. The prefabricated building frame is connected to the prefabricated wall by pre-reserved steel bars. After the pre-reserved steel bars are connected to the holes in the prefabricated wall, they are welded to the concrete. After the concrete is poured, the prefabricated wall needs to be stabilized and allowed to solidify using struts.

[0003] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0004] Traditional installation methods lack effective positioning and adjustment mechanisms, making it difficult to achieve precise alignment between precast walls and ground reinforcement bars. This results in the wall being difficult to accurately insert reinforcement bars during installation, increasing installation difficulty and time costs. Utility Model Content

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0006] This disclosure provides a wall positioning and installation device for building engineering to solve the problem of difficulty in aligning precast walls with reserved steel bars and inconvenience in installation.

[0007] In some embodiments, the wall positioning and installation device for building engineering includes: a base plate, which is a rectangular plate structure; a support frame, which is disposed at one end of the base plate and is perpendicular to the base plate; a lower bracket, which is hinged to the support frame and is perpendicular to the base plate; a pull rod, which is hinged to the other end of the base plate and has an upper bracket hinged to the other end; and a positioning rod, which is hinged to one side of the support frame and has the other end hinged to the middle of the pull rod.

[0008] In some embodiments, an adjusting slide rod is slidably provided on the upper end of the support frame. The adjusting slide rod is parallel to the base plate and is hinged to the lower support.

[0009] In some embodiments, a sliding rod is vertically provided on the lower support, and a sliding sleeve is provided at one end of the adjusting rod near the lower support. The sliding rod is rotatably and slidably disposed within the sliding sleeve.

[0010] In some embodiments, an upper sliding rod is vertically provided on the upper support, and a hinged sliding rod is provided at the end of the pull rod away from the base plate. An upper sliding sleeve is provided at the end of the hinged sliding rod, and the upper sliding rod is slidably disposed within the upper sliding sleeve.

[0011] In some embodiments, an adjusting screw is connected to the end of the adjusting slide rod away from the lower support, and the adjusting screw is threadedly connected to the adjusting slide rod. The adjusting screw is rotatably mounted on the support frame.

[0012] In some embodiments, a lower lifting frame is hinged to the sliding rod, and the two ends of the lower lifting frame are respectively hinged to the two ends of the sliding rod. The adjusting slide rod is slidably disposed between the lower lifting frames, and a lower hydraulic cylinder is disposed at the bottom of the lower lifting frame, which is connected to the adjusting slide rod.

[0013] In some embodiments, an inner rod is slidably disposed within the pull rod, and the pull rod is hingedly connected to the hinged slide rod via the inner rod. An outer sliding groove is provided on the side of the pull rod, and an outer slide rod is provided on the side of the inner rod. The outer slide rod is slidably disposed within the outer sliding groove, and a fastening nut is fitted onto the outer slide rod.

[0014] In some embodiments, there are two positioning rods, which are hinged to the pull rod and the support frame respectively. The two positioning rods are threaded rod-shaped structures and are connected to each other by a threaded sleeve.

[0015] In some embodiments, the pull rod and the positioning rod are connected by a sliding sleeve, the sliding sleeve is hinged to the positioning rod, the sliding sleeve is sleeved on the pull rod, and a positioning bolt is vertically inserted into the sliding sleeve.

[0016] In some embodiments, an upper lifting frame is hinged to the upper sliding rod, and the two ends of the upper lifting frame are respectively hinged to the two ends of the upper sliding rod. The hinged sliding rod is slidably disposed between the upper lifting frame, and an upper hydraulic cylinder is provided at the bottom of the upper lifting frame, and the upper hydraulic cylinder is connected to the hinged sliding rod.

[0017] The wall positioning and installation device for building engineering provided in this embodiment can achieve the following technical effects:

[0018] The design of the support frame and tie rods enables precise positioning and subsequent stable support of the precast wall. The lower and upper supports can be raised and lowered to facilitate the alignment and connection of the precast wall with the ground steel bars, ensuring the accuracy of the wall installation position.

[0019] The design of the lower and upper supports, along with the sliding rod, sliding sleeve, upper sliding rod, and upper sliding sleeve, allows for vertical sliding, ensuring that the precast wall can be stably raised and lowered during installation and preventing lateral movement or displacement of the wall during the raising and lowering process.

[0020] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0022] Figure 1 This is a schematic diagram of the structure of the wall positioning and installation device for building engineering provided in this embodiment;

[0023] Figure 2 This is a schematic diagram of the wall positioning and installation device for building engineering provided in the embodiments of this disclosure;

[0024] Figure 3 This is provided by the embodiments of this disclosure. Figure 2 Schematic diagram of part A in the middle;

[0025] Figure 4 This is provided by the embodiments of this disclosure. Figure 2 Schematic diagram of Part B in the middle section;

[0026] Figure 5 This is a side view of the wall positioning and installation device for building engineering provided in the embodiments of this disclosure;

[0027] Figure 6 This is a cross-sectional schematic diagram of the wall positioning and installation device for building engineering provided in the embodiments of this disclosure.

[0028] Figure label:

[0029] 100. Base plate; 200. Support frame; 201. Adjusting slide rod; 202. Adjusting screw; 300. Lower bracket; 301. Lower slide rod; 302. Lower slide sleeve; 303. Lower lifting frame; 304. Lower hydraulic cylinder; 400. Tie rod; 401. Hinge slide rod; 402. Inner rod; 403. Outer slide groove; 404. Outer slide rod; 405. Fastening nut; 406. Threaded sleeve; 407. Sliding sleeve; 408. Positioning bolt; 500. Upper bracket; 501. Upper slide rod; 502. Upper sliding sleeve; 503. Upper lifting frame; 504. Upper hydraulic cylinder; 600. Positioning rod Detailed Implementation

[0030] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0031] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0032] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0033] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0034] Unless otherwise stated, the term "multiple" means two or more.

[0035] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0036] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0038] Combination Figure 1-4 As shown, this embodiment of the present disclosure provides a wall positioning and installation device for building engineering. A base plate 100 is a rectangular plate structure; a support frame 200 is disposed at one end of the base plate 100, and the support frame 200 is perpendicular to the base plate 100; a lower bracket 300 is hinged to the support frame 200, and the lower bracket 300 is perpendicular to the base plate 100; a pull rod 400 is hinged to the other end of the base plate 100, and an upper bracket 500 is hinged to the other end of the pull rod 400; a positioning rod 600 is hinged at one end to one side of the support frame 200, and the other end of the positioning rod 600 is hinged to the middle of the pull rod 400.

[0039] Using the wall positioning and installation device for building engineering provided in this embodiment, when installing a precast wall, the base plate 100 and the lower support 300 are in a relatively perpendicular state. The base plate 100 is fixed to the bottom surface by bolts reserved on the bottom surface, which serves to stabilize the support frame 200. The lower support 300 is hinged to the side of the support frame 200 near the precast wall. The lower support 300 has bolt holes for connecting to the precast wall, so that the precast wall can be connected to the lower support 300. One end of the pull rod 400 is hinged to the side of the base plate 100 away from the support frame 200, and the other end of the pull rod 400 is inclined towards the upper part of the support frame 200. The upper end of the pull rod 400 is hinged to the upper support 500. The upper support 500 has bolt holes for connecting to the precast wall. Bolt holes for wall connection allow the precast wall to be connected to the upper bracket 500. A positioning rod 600 is hinged to the middle of the tie rod 400, and the other end of the positioning rod 600 is hinged to the support frame 200. The positioning rod 600 provides stable support for the tie rod 400. The lower bracket 300 and the upper bracket 500 can be raised and lowered, allowing the precast wall to move up and down on the support frame 200 and the tie rod 400. The support frame 200 and the tie rod 400 can position the precast wall, facilitating alignment between the precast wall and the steel reinforcement on the ground. The raising and lowering of the lower bracket 300 and the upper bracket 500 facilitates the insertion of the precast wall, preventing misalignment when inserting the steel reinforcement.

[0040] Optionally, an adjusting slide rod 201 is slidably provided on the upper end of the support frame 200. The adjusting slide rod 201 is relatively parallel to the base plate 100, and the adjusting slide rod 201 is hinged to the lower support 300.

[0041] In this way, an adjusting slide rod 201 is slidably installed on the upper end of the support frame 200 facing the precast wall. The adjusting slide rod 201 can slide laterally on the support frame 200. The end of the adjusting slide rod 201 near the precast wall is hinged to the lower support 300. In this way, the position of the lower support 300 can be adjusted by adjusting the slide rod 201, so that the lower support 300 can easily drive the precast wall to align with the bottom steel bars. Furthermore, the lower support 300 and the adjusting slide rod 201 are laterally hinged, so that the lower support 300 can swing left and right at one end of the adjusting slide rod 201, which facilitates the fixed connection between the precast wall and the lower support 300.

[0042] Optionally, a sliding rod 301 is vertically provided on the lower support 300, and a sliding sleeve 302 is provided at one end of the adjusting rod 201 near the lower support 300. The sliding rod 301 is rotatably and slidably disposed in the sliding sleeve 302.

[0043] In this way, a sliding rod 301 is vertically arranged on the side of the lower support 300 near the base plate 100, and a sliding sleeve 302 is vertically arranged on the adjusting rod 201. The sliding sleeve 407 of the sliding sleeve 302 is located on the sliding rod 301. This allows the lower support 300 to slide up and down on the adjusting rod 201, which enables stable up and down sliding during the installation of the precast wall and prevents lateral movement and displacement of the precast wall during up and down sliding.

[0044] Optionally, an upper slide rod 501 is vertically provided on the upper support 500, and a hinged slide rod 401 is provided at one end of the pull rod 400 away from the base plate 100. An upper sliding sleeve 502 is provided at the end of the hinged slide rod 401, and the upper slide rod 501 is slidably disposed in the upper sliding sleeve 502.

[0045] Thus, an upper slide rod 501 is provided on the side of the upper bracket 500 near the tie rod 400, and a hinged slide rod 401 is hinged to the end of the tie rod 400 near the upper bracket 500. The hinged slide rod 401 can swing up and down. An upper sliding sleeve 502 is provided at the end of the hinged slide rod 401, and the upper slide rod 501 can slide up and down within the upper sliding sleeve 502. This allows the upper bracket to slide up and down, and the upper slide rod 501 can rotate within the upper sliding sleeve 502. This allows the upper bracket 500 to be hinged on the hinged slide rod 401, which facilitates the connection and installation of the upper bracket 500 with the precast wall.

[0046] Optionally, an adjusting screw 202 is connected to the end of the adjusting slide rod 201 away from the lower bracket 300. The adjusting screw 202 is threadedly connected to the adjusting slide rod 201, and the adjusting screw 202 is rotatably mounted on the support frame 200.

[0047] In this way, the adjusting slide rod 201 and the adjusting screw 202 are threadedly connected. The adjusting screw 202 is rotatably mounted on the support frame 200. By rotating the adjusting screw 202, the adjusting slide rod 201 can slide on the support frame 200, thereby adjusting the position of the lower bracket 300. Thus, the position of the precast wall can be adjusted through the lower bracket 300.

[0048] Optionally, a lower lifting frame 303 is hinged to the lower sliding rod 301, and the two ends of the lower lifting frame 303 are respectively hinged to the two ends of the lower sliding rod 301. The adjusting slide rod 201 is slidably disposed between the lower lifting frame 303. A lower hydraulic cylinder 304 is disposed at the bottom of the lower lifting frame 303, and the lower hydraulic cylinder 304 is connected to the adjusting slide rod 201.

[0049] Thus, a lower lifting frame 303 is hinged to the lower sliding rod 301. The lower lifting frame 303 has a U-shaped structure, with both ends of the lower sliding frame connected to the two ends of the lower sliding rod 301. This restricts the lower lifting frame 303 from sliding up and down on the lower sliding rod 301. An adjusting slide rod 201 passes through the lower lifting frame 303 and can slide up and down within it. A lower hydraulic cylinder 304 is fixedly installed at the bottom of the lower lifting frame 303. The other end of the lower hydraulic cylinder 304 is connected to the bottom of the adjusting slide rod 201. The lower hydraulic cylinder 304 can push the adjusting slide rod 201 to slide up and down on the lower sliding rod 301. This allows the lower support 300 to lift and lower the precast wall, facilitating the connection between the precast wall and the reinforcing steel, and making it easier to lower the precast wall into the appropriate position to complete the installation of the precast wall.

[0050] Optionally, an inner rod 402 is slidably disposed within the pull rod 400, and the pull rod 400 is hingedly connected to the hinged slide rod 401 through the inner rod 402. An outer sliding groove 403 is provided on the side of the pull rod 400, and an outer slide rod 404 is provided on the side of the inner rod 402. The outer slide rod 404 is slidably disposed within the outer sliding groove 403, and a fastening nut 405 is sleeved on the outer slide rod 404.

[0051] Thus, an inner rod 402 is slidably installed inside the tie rod 400. The inner rod 402 can control the length of the tie rod 400. By controlling the length and angle of the tie rod 400, the height of the upper support 500 can be controlled. This allows the tie rod 400 to connect precast walls of different heights. The hinged slide rod 401 is connected to the tie rod 400 through the inner rod 402. The hinged slide rod 401 and the inner rod 402 are hinged together. The inner rod 402 is connected to the upper support 500 through the hinged slide rod 401. The tie rod 400 is a hollow tubular structure. The inner rod 402 is slidably installed inside the tie rod 400. The side of the tie rod 400 is open. An outer sliding groove 403 is provided, which runs through the inside and outside of the pull rod 400. The inner rod 402 extends into the pull rod 400 and is connected to an outer sliding rod 404 on one side. The outer sliding rod 404 is threaded and slides within the outer sliding groove 403. The outer ring can extend out of the outer sliding groove 403. A fastening nut 405 is threadedly connected to the outer sliding rod 404. When the fastening nut is tightened, the outer sliding rod 404 can be fixed to the outer sliding groove 403, thus fixing the inner rod 402 within the pull rod 400. This allows the extension length of the inner rod 402 within the pull rod 400 to be controlled, thereby controlling the overall length of the pull rod 400.

[0052] Optionally, there are two positioning rods 600, which are respectively hinged to the pull rod 400 and the support frame 200. The two positioning rods 600 are threaded rod-shaped structures and are connected to each other by a threaded sleeve 406.

[0053] In this way, the two ends of the threaded sleeve 406 between the positioning rods 600 are respectively provided with threads, and the two threads inside the threaded sleeve 406 are arranged in a mirror image. The two positioning rods 600 are respectively inserted into the two ends of the threaded sleeve 406, and the two positioning rods 600 are respectively threadedly connected to the threaded sleeve 406. In this way, by rotating the threaded sleeve 406, the distance between the two positioning rods 600 can be controlled, thereby controlling the overall length, and thus the tilt angle of the pull rod 400 can be adjusted.

[0054] Optionally, the pull rod 400 and the positioning rod 600 are connected by a sliding sleeve 407. The sliding sleeve 407 is hinged to the positioning rod 600. The sliding sleeve 407 is sleeved on the pull rod 400, and a positioning bolt 408 is vertically inserted into the sliding sleeve 407.

[0055] Thus, the sliding sleeve 407 on the pull rod 400 is provided with a sliding sleeve 407 tube, and the sliding sleeve 407 ring is fixedly connected to the pull rod 400 by a positioning bolt 408. By loosening the positioning bolt 408, the sliding sleeve 407 can slide on the pull rod 400, thereby adjusting the position of the positioning rod 600 supported on the pull rod 400, and thus adjusting the tilt angle of the pull rod 400. Furthermore, the positioning rod 600 and the sliding sleeve 407 are hinged, which facilitates the sliding sleeve 407 sliding on the pull rod 400.

[0056] Optionally, an upper lifting frame 503 is hinged to the upper slide rod 501, and the two ends of the upper lifting frame 503 are respectively hinged to the two ends of the upper slide rod 501. The hinged slide rod 401 is slidably disposed between the upper lifting frame 503. An upper hydraulic cylinder 504 is provided at the bottom of the upper lifting frame 503, and the upper hydraulic cylinder 504 is connected to the hinged slide rod 401.

[0057] Thus, the upper lifting frame 503 is hinged to the upper sliding rod 501. The upper lifting frame 503 has a U-shaped structure, with both ends of the upper sliding frame connected to the two ends of the upper sliding rod 501. This restricts the upper lifting frame 503 from sliding up and down on the upper sliding rod 501. A hinged sliding rod 401 passes through the lower lifting frame 303 and can slide up and down within the upper lifting frame 503. An upper hydraulic cylinder 504 is fixedly installed at the bottom of the upper lifting frame 503. The other end of the upper hydraulic cylinder 504 is connected to the bottom of the hinged sliding rod 401. The upper hydraulic cylinder 504 can push the hinged sliding rod 401 to slide up and down on the upper sliding rod 501. This allows the upper support 500 to lift and lower the precast wall, facilitating the connection between the precast wall and the reinforcing steel, and making it easy to lower the precast wall into the appropriate position to complete the installation of the precast wall.

[0058] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A building construction wall positioning and mounting device, characterised in that, include: The base plate (100) is a rectangular plate structure; A support frame (200) is disposed at one end of the base plate (100), and the support frame (200) is disposed perpendicularly to the base plate (100); The lower bracket (300) is hinged to the support frame (200), and the lower bracket (300) is perpendicular to the base plate (100); A pull rod (400) is hinged to the other end of the base plate (100), and an upper bracket (500) is hinged to the other end of the pull rod (400). The positioning rod (600) is hinged at one end to one side of the support frame (200), and the other end of the positioning rod (600) is hinged to the middle of the pull rod (400).

2. A building construction wall panel positioning and mounting arrangement according to claim 1, characterised in that, An adjusting slide rod (201) is slidably provided on the upper end of the support frame (200). The adjusting slide rod (201) is parallel to the base plate (100) and is hinged to the lower support (300).

3. The wall positioning and installation device for building engineering according to claim 2, characterized in that, A sliding rod (301) is vertically arranged on the lower support (300), and a sliding sleeve (302) is provided at one end of the adjusting rod (201) near the lower support. The sliding rod (301) is rotatably and slidably arranged in the sliding sleeve (302).

4. The construction wall positioning and mounting device of claim 1, wherein, The upper support (500) is vertically provided with an upper slide rod (501), and the end of the pull rod (400) away from the bottom plate (100) is provided with a hinged slide rod (401). The end of the hinged slide rod (401) is provided with an upper sliding sleeve (502), and the upper slide rod (501) is slidably disposed in the upper sliding sleeve (502).

5. The building construction wall panel positioning and mounting device of claim 2 wherein, An adjusting screw (202) is connected to the end of the adjusting slide rod (201) away from the lower bracket. The adjusting screw (202) is threadedly connected to the adjusting slide rod (201). The adjusting screw (202) is rotatably mounted on the support frame (200).

6. The building construction wall panel positioning and mounting device of claim 3, wherein, A lower lifting frame (303) is hinged to the lower sliding rod (301). The two ends of the lower lifting frame (303) are respectively hinged to the two ends of the lower sliding rod (301). The adjusting slide rod (201) is slidably disposed between the lower lifting frames (303). A lower hydraulic cylinder (304) is disposed at the bottom of the lower lifting frame (303). The lower hydraulic cylinder (304) is connected to the adjusting slide rod (201).

7. The building construction wall panel positioning and mounting device of claim 4 wherein, An inner rod (402) is slidably disposed inside the pull rod (400). The pull rod (400) is hinged to the hinged slide rod (401) through the inner rod (402). An outer slide groove (403) is provided on the side of the pull rod (400). An outer slide rod (404) is provided on the side of the inner rod (402). The outer slide rod (404) is slidably disposed in the outer slide groove (403). A fastening nut (405) is sleeved on the outer slide rod (404).

8. The wall positioning and installation device for building engineering according to claim 1, characterized in that, There are two positioning rods (600), which are hinged to the pull rod (400) and the support frame (200) respectively. The two positioning rods (600) are threaded rod-shaped structures and are connected to each other by a threaded sleeve (406).

9. The building construction wall panel positioning and mounting device according to claim 7, wherein, The pull rod (400) and the positioning rod (600) are connected by a sliding sleeve (407). The sliding sleeve (407) is hinged to the positioning rod (600). The sliding sleeve (407) is sleeved on the pull rod (400). A positioning bolt (408) is vertically inserted into the sliding sleeve (407).

10. The building construction wall panel positioning and mounting device according to claim 4, wherein, An upper lifting frame (503) is hinged to the upper sliding rod (501). The two ends of the upper lifting frame (503) are respectively hinged to the two ends of the upper sliding rod (501). The hinged sliding rod (401) is slidably disposed between the upper lifting frames (503). An upper hydraulic cylinder (504) is disposed at the bottom of the upper lifting frame (503). The upper hydraulic cylinder (504) is connected to the hinged sliding rod (401).

Images