Direct pressing type hydraulic clamp for installing steel bar connecting piece

Abstract

The utility model relates to the field of mounting tools for steel bar connecting pieces, in particular to a pair of direct-pressing type hydraulic tongs for mounting the steel bar connecting pieces. The direct pressure type hydraulic clamp comprises a hydraulic cylinder, a fixed clamp arm, a movable clamp arm and a guide mechanism; the fixed clamp arm is connected with a fixed part of the hydraulic cylinder, and the movable clamp arm is connected with a piston rod of the hydraulic cylinder; the movable clamp arm is connected with the fixed clamp arm through the guide mechanism and can clamp a steel bar connecting piece under the action of the hydraulic cylinder. According to the utility model, the hydraulic cylinder drives the movable clamp arm to move in the guide mechanism, so that the reinforcing steel bar connecting piece placed between the movable clamp arm and the fixed clamp arm is clamped, and the installation of the reinforcing steel bar connecting piece is realized. The whole process is easy to operate, and the hydraulic clamp is compact in overall structure, small in size, small in occupied space, light in weight and beneficial to daily operation.

Description

Technical Field

[0001] The utility model relates to the field of steel bar connector installation tools, in particular to a direct pressure hydraulic pliers used for installing steel bar connectors. Background Art

[0002] Rebar connectors are components used to connect two rebars and are widely used in construction, bridges, tunnels, and other projects. Taper sleeve locking connectors are a new type of rebar connector, often used in high-performance construction projects. Their complex installation conditions place high demands on the tool size and weight.

[0003] Currently, there are many types of installation tools for taper sleeve locking joints. However, due to the high installation requirements and high installation pressure of taper sleeve locking joints, the weight and appearance of the installation tools are not conducive to daily operation. Utility Model Content

[0004] The purpose of the utility model is to provide a direct pressure hydraulic pliers for installing steel bar connectors, which can solve the above technical problems.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] The utility model provides a direct pressure hydraulic pliers for installing steel bar connectors, comprising a hydraulic cylinder, a fixed pliers arm, a movable pliers arm and a guide mechanism;

[0007] The fixed clamp arm is connected to the fixed part of the hydraulic cylinder, and the movable clamp arm is connected to the piston rod of the hydraulic cylinder;

[0008] The movable clamp arm is connected to the fixed clamp arm through the guide mechanism and can clamp the steel bar connector under the action of the hydraulic cylinder.

[0009] In an optional embodiment, the guide mechanism includes a guide frame and a guide block;

[0010] The fixed clamp arm is arranged outside the guide frame, the movable clamp arm is arranged at one end of the guide block, and the guide block is slidably arranged in the guide frame.

[0011] In an optional embodiment, a guide pad is provided between the guide frame and the guide block;

[0012] Guide strips are provided at both ends of the guide pad;

[0013] The guide block is provided with a connecting groove, and the guide bar is provided in the connecting groove

[0014] In an optional embodiment, a connecting hole is provided on the guide pad or the guide bar, and a connecting bolt passes through the connecting hole and is threadedly connected to the guide block for fixing the guide pad or the guide bar on the guide block.

[0015] In an optional embodiment, the connecting hole is a countersunk hole.

[0016] In an optional embodiment, the guide frame is provided with fixing bolts, and the fixing bolts connect two oppositely arranged frames of the guide frame.

[0017] In an optional embodiment, a sheath is provided on the fixing bolt, and the sheath is provided between the two oppositely arranged frames.

[0018] In an optional embodiment, a handle is provided on the guide frame.

[0019] In an optional embodiment, the fixed clamp arm is integrally provided with the guide frame.

[0020] In an optional embodiment, a pressure pad is provided on a side of the fixed caliper arm close to the movable caliper arm and a side of the movable caliper arm close to the fixed caliper arm.

[0021] The beneficial effects of the embodiments of the present utility model are:

[0022] The movable clamp arm is driven by the hydraulic cylinder to move in the guide mechanism, thereby clamping the steel bar connector placed between the movable clamp arm and the fixed clamp arm, thereby realizing the installation of the steel bar connector.

[0023] The whole process is simple to operate. The hydraulic pliers have a compact overall structure, small size, small space occupation, light weight, and are convenient for daily operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A front view of the direct pressure hydraulic pliers provided by an embodiment of the utility model;

[0026] Figure 2 for Figure 1 AA cross-sectional view;

[0027] Figure 3 for Figure 1BB cross-sectional view;

[0028] Figure 4 A side view of the direct pressure hydraulic pliers provided by an embodiment of the present utility model;

[0029] Figure 5 A top view of the direct pressure hydraulic pliers provided by an embodiment of the present utility model;

[0030] Figure 6 A schematic diagram of the three-dimensional structure of the direct pressure hydraulic pliers provided in an embodiment of the utility model;

[0031] Figure 7 A schematic diagram of the three-dimensional structure of the guide frame and fixed pliers arm of the direct pressure hydraulic pliers provided in an embodiment of the present utility model;

[0032] Figure 8 A schematic diagram of the three-dimensional structure of the guide block and the movable pliers arm of the direct pressure hydraulic pliers provided by an embodiment of the utility model;

[0033] Figure 9 A schematic diagram of the three-dimensional structure of the guide interlayer of the direct pressure hydraulic pliers provided in an embodiment of the present utility model.

[0034] Icons: 1-Hydraulic cylinder; 2-Guide frame; 3-Moving clamp arm; 4-Fixed clamp arm; 5-Guide block; 6-Guide interlayer; 7-Handle; 8-Lifting ring; 9-Fixing bolt; 10-Sheath; 11-Piston rod; 12-End cover; 13-Through hole; 14-Connecting bolt; 15-Vertical rod; 16-Horizontal rod; 17-Weight reduction hole; 18-Connecting groove; 19-Mounting hole; 20-Pressure pad; 21-Threaded hole; 22-Guide plate; 23-Guide bar. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0040] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0041] The following combination Figures 1 to 9 , some embodiments of the present invention are described in detail. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0042] The utility model provides a direct pressure hydraulic pliers for installing steel bar connectors, comprising a hydraulic cylinder 1, a fixed pliers arm 4, a movable pliers arm 3 and a guide mechanism; the fixed pliers arm 4 is connected to the fixed part of the hydraulic cylinder 1, and the movable pliers arm 3 is connected to the piston rod 11 of the hydraulic cylinder 1; the movable pliers arm 3 is connected to the fixed pliers arm 4 through the guide mechanism, and can clamp the steel bar connector under the action of the hydraulic cylinder 1.

[0043] Establish a spatial rectangular coordinate system, such as Figure 6As shown, the direction extending from the guide block 5 to the movable clamp arm 3 is the X positive direction, the direction from the movable clamp arm 3 to the fixed clamp arm 4 is the Z positive direction, and when looking directly at the jaws of the hydraulic clamp, the rightward direction is the Y positive direction.

[0044] When directions are expressed in the following embodiments, the above-mentioned spatial rectangular coordinate system is used as a reference.

[0045] In this embodiment, the end cap 12 of the hydraulic cylinder 1 is integrated into the fixed caliper arm 4, and the cylinder body of the hydraulic cylinder 1 is connected to the end cap 12 via threads. The mobile caliper arm 3 is connected to the fixed caliper arm 4 via a guide mechanism, and the mobile caliper arm 3 and piston rod 11 are connected by bolts. The extension and retraction of the piston rod 11 of the hydraulic cylinder 1 drives the mobile caliper arm 3 up and down within the fixed caliper arm 4, that is, linear movement along the Y-axis. The part to be connected is placed between the fixed caliper arm 4 and the mobile caliper arm 3, and installation is completed by controlling the extension and retraction of the hydraulic cylinder 1.

[0046] Compared with ordinary scissor-type hydraulic pliers, the direct pressure hydraulic pliers provided in this embodiment have a more compact overall structure, smaller mass, smaller occupied space, and a square overall shape, which is more conducive to daily operation and is suitable for working conditions where the installation space in a single direction is not restricted.

[0047] In this embodiment, the fixed connection between the fixed clamp arm 4 and the guide frame 2 is an integrated connection, and the fixed clamp arm 4 and the two adjacent vertical rods 15 are arranged as one piece, which can not only reduce the use of the cross bar 16, but also improve the connection strength and connection stability between the fixed clamp arm 4 and the guide frame 2.

[0048] It can be understood that the fixed connection method between the fixed clamp arm 4 and the guide frame 2 can be an integrated connection, but it is not limited to this integrated setting method. It can also be other fixed connection methods, such as welding, bolt fixed connection, riveting, clamping, etc., as long as it can achieve the fixed setting of the fixed clamp arm 4 on the guide frame 2 and can ensure the connection strength and connection stability between the fixed clamp arm 4 and the guide frame 2.

[0049] In an optional embodiment, the guide mechanism includes a guide frame 2 and a guide block 5; the fixed plier arm 4 is arranged outside the guide frame 2, the movable plier arm 3 is arranged at one end of the guide block 5, and the guide block 5 is slidably arranged in the guide frame 2.

[0050] In this embodiment, the guide frame 2 is composed of multiple vertical rods 15 and multiple horizontal rods 16. The multiple vertical rods 15 are arranged parallel to the Z axis, and the vertical rods 15 are connected by horizontal rods 16 parallel to the X axis or the Y axis, thereby forming a frame structure.

[0051] In this embodiment, the guide frame 2 has four vertical rods 15, and the guide block 5 abuts against the four corners of the square frame formed on the guide frame 2 in the Z-axis direction to form a positioning so that the guide block 5 can only move in the Z-axis direction.

[0052] In this embodiment, the horizontal rod 16 and the vertical rod 15 can be a square rod structure, a round rod, or a plate structure, etc., as long as they can form a guiding mechanism of the frame.

[0053] In this embodiment, the movable clamp arm 3 is arranged in the positive direction of the X-axis of the guide block 5 and is connected to the side wall of the guide block 5. The side wall of the guide block 5 in the negative direction is connected to the piston rod 11 of the hydraulic cylinder 1.

[0054] Specifically, in this embodiment, the guide block 5 and the movable clamp arm 3 are connected in an integral manner.

[0055] That is, the guide block 5 and the movable clamp arm 3 are integrally formed as a whole by casting, injection molding, etc. Such a setting can ensure the connection strength and connection stability between the movable clamp arm 3 and the guide block 5, thereby ensuring that the movable clamp arm 3 can apply sufficient pressure to the steel bar connector to achieve the installation and use of the steel bar connector.

[0056] It can be understood that the fixed connection between the movable clamp arm 3 and the guide block 5 can be an integrated setting, but it is not limited to this integrated setting. It can also be other fixed connection methods, such as bolt fixed connection, welding, riveting, clamping, etc. As long as it can achieve the fixed connection between the movable clamp arm 3 and the guide block 5, it can ensure the connection stability and connection strength between the movable clamp arm 3 and the guide block 5.

[0057] Specifically, in this embodiment, a mounting hole 19 is provided on the side wall of the guide block 5 , which is used to fixedly connect the guide block 5 to the piston rod 11 of the hydraulic cylinder 1 .

[0058] More specifically, in this embodiment, the mounting hole 19 can be a blind hole or a through hole.

[0059] More specifically, in this embodiment, a weight-reducing hole 17 is provided on the guide block 5 , and the weight-reducing hole 17 is provided through the guide block 5 in the Y direction. The mounting hole 19 can be connected to the weight-reducing hole 17 or can be provided through the entire guide block 5 .

[0060] After the weight-reducing holes 17 are added, the volume remains unchanged, thereby ensuring the guiding function of the guide block 5 and reducing the overall weight, thereby making the direct pressure hydraulic pliers easy to carry and operate.

[0061] In an optional embodiment, a guide pad 22 is provided between the guide frame 2 and the guide block 5 ; guide bars 23 are provided at both ends of the guide pad 22 ; a connecting groove 18 is provided on the guide block 5 , and the guide bar 23 is provided in the connecting groove 18 .

[0062] In this embodiment, the guide block 5 has a connecting groove 18 on its side wall along the Y-axis direction, and the guide strips 23 are fixedly arranged in the connecting groove 18. The guide strips 23 on the same side are connected as a whole through the guide pad 22.

[0063] The portion of the guide strip 23 exposed in the connection groove 18 may abut against the interior of the guide frame 2 or may have a certain gap therebetween.

[0064] In this embodiment, the guide pad 22 and the two guide bars 23 form an I-shaped structure.

[0065] It is understandable that the structure between the guide pad 22 and the guide bar 23 can be an I-shape, but it is not limited to this structural form, as long as it can achieve the guiding function of the guide mechanism.

[0066] The guide pad 22 is annular, which can reduce the overall weight to the greatest extent while ensuring the connection strength.

[0067] In this embodiment, one end of the guide bar 23 is disposed in the connecting groove 18 , and the other end abuts against the corner groove of the vertical rod 15 , thereby positioning the guide bar 23 .

[0068] In this embodiment, the guide pad 22 and the guide strip 23 are integrally connected to form a guide interlayer 6 of an integral structure.

[0069] In this embodiment, the guide strip 23 is provided to reduce the thickness of the guide block 5 , thereby facilitating the installation of the guide block 5 .

[0070] Specifically, in this embodiment, the guide block 5 is inserted into the guide frame 2 along the negative direction of the X-axis, and then the guide interlayer 6 is inserted on both sides of the guide block 5 along the negative direction of the Z-axis, that is, between the guide block 5 and the guide frame 2, so that the guide bar 23 is arranged corresponding to the connecting groove 18, thereby realizing the positioning of the guide block 5 in the X-axis and Y-axis directions.

[0071] In an optional embodiment, a connecting hole is provided on the guide pad 22 or the guide bar 23 , and a connecting bolt 14 passes through the connecting hole and is threadedly connected to the guide block 5 for fixing the guide pad 22 or the guide bar 23 on the guide block 5 .

[0072] In this embodiment, the guide bar 23 has a connecting hole, and the bottom of the connecting groove 18 has a threaded hole 21. The guide bar 23 is fixed on the guide block 5 by passing the connecting bolt 14 through the connecting hole and threadedly connected to the threaded hole 21.

[0073] Specifically, in this embodiment, each guide bar 23 has at least two connection holes to ensure the connection stability of the guide bar 23 on the guide block 5 .

[0074] It should be understood that the number of connecting holes can be set according to actual needs. When the stability is sufficient, one connecting hole can be set, or after setting multiple connecting holes, only one connecting bolt 14 can be used for connection. When the stability is insufficient, more connecting holes can be used for connection.

[0075] In this embodiment, a through hole 13 is provided on the guide frame 2 . The through hole 13 is a through hole that passes through the inside and outside of the guide frame 2 .

[0076] Specifically, in this embodiment, the axis of the through hole 13 and the axis of the connecting hole are on the same plane, and the plane is parallel to the Z axis.

[0077] With this arrangement, after the guide bar 23 is set in the guide groove, the guide block 5 can be moved up and down to make the through hole 13 correspond to the connecting hole, making it easy for a screwdriver to pass through the through hole 13 to install or remove the connecting bolt 14 in the connecting hole.

[0078] In an optional embodiment, in order to prevent the head of the connecting bolt 14 from affecting the sliding of the guide bar 23 between the guide frames 2, the connecting hole is set as a countersunk hole, that is, the head of the connecting screw is sunk into the interior of the guide bar 23 and is not exposed on the outside.

[0079] In this embodiment, the diameter of the through hole 13 is larger than the diameter of the connecting hole, which can facilitate the installation of the connecting bolt 14 and facilitate observation of whether the connecting bolt 14 is installed in place.

[0080] In an optional embodiment, a fixing bolt 9 is provided on the guide frame 2 , and the fixing bolt 9 connects two oppositely disposed frames of the guide frame 2 .

[0081] The fixing bolt 9 connects two vertical rods 15 arranged along the Y axis on the guide frame 2, and the connecting bolt 14 is arranged opposite to the fixed clamp arm 4.

[0082] With this arrangement, after the guide block 5 and the guide interlayer 6 are installed in the guide frame 2, the guide frame 2 is fixed by fixing bolts 9, thereby ensuring the stability of the guide frame 2 and facilitating the installation and disassembly of the guide block 5 and the guide interlayer 6.

[0083] In this embodiment, two corresponding vertical rods 15 are provided with corresponding through holes, and the fixing bolts 9 pass through the two corresponding through holes and are locked by nuts.

[0084] In an optional embodiment, a sheath 10 is provided on the fixing bolt 9 , and the sheath 10 is provided between the two oppositely arranged frames.

[0085] In this embodiment, the setting of the sheath 10 can not only increase the connection strength between the vertical rods 15, but also limit the minimum distance between the vertical rods 15, thereby preventing the fixing bolts 9 from being adjusted too tightly, which may cause the guide block 5 to be unable to slide in the Z-axis direction.

[0086] In an optional embodiment, a handle 7 is provided on the guide frame 2 .

[0087] In this embodiment, the provision of the handle 7 facilitates both manipulation during use and portability during movement.

[0088] In this embodiment, hanging rings 8 are further provided at the upper and lower ends of the guide frame 2 .

[0089] By providing the lifting ring 8, the direct pressure hydraulic pliers can be used more flexibly and conveniently.

[0090] In an optional embodiment, a pressure pad 20 is provided on a side of the fixed caliper arm 4 close to the movable caliper arm 3 and a side of the movable caliper arm 3 close to the fixed caliper arm 4 .

[0091] The arrangement of the pressure pad 20 can provide a certain degree of protection for the steel bar connector and reduce the wear of the steel bar connector on the movable clamp arm 3 and the fixed clamp arm 4.

[0092] The beneficial effects of the embodiments of the present utility model are:

[0093] The hydraulic cylinder 1 drives the movable clamp arm 3 to move in the guide mechanism, thereby clamping the steel bar connector placed between the movable clamp arm 3 and the fixed clamp arm 4, thereby achieving the installation of the steel bar connector.

[0094] The whole process is simple to operate. The hydraulic pliers have a compact overall structure, small size, small space occupation, light weight, and are convenient for daily operation.

[0095] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A direct pressure hydraulic pliers for installing steel bar connectors, characterized in that: It includes a hydraulic cylinder, a fixed clamp arm, a movable clamp arm and a guide mechanism; The fixed clamp arm is connected to the fixed part of the hydraulic cylinder, and the movable clamp arm is connected to the piston rod of the hydraulic cylinder; The movable clamp arm is connected to the fixed clamp arm through the guide mechanism and can clamp the steel bar connector under the action of the hydraulic cylinder.

2. The direct pressure hydraulic pliers according to claim 1, characterized in that: The guide mechanism includes a guide frame and a guide block; The fixed clamp arm is arranged outside the guide frame, the movable clamp arm is arranged at one end of the guide block, and the guide block is slidably arranged in the guide frame.

3. The direct pressure hydraulic pliers according to claim 2, characterized in that: A guide pad is provided between the guide frame and the guide block; Guide strips are provided at both ends of the guide pad; The guide block is provided with a connecting groove, and the guide bar is arranged in the connecting groove.

4. The direct pressure hydraulic pliers according to claim 3, characterized in that: The guide pad or the guide bar is provided with a connecting hole, and a connecting bolt passes through the connecting hole and is threadedly connected to the guide block, so as to fix the guide pad or the guide bar on the guide block.

5. The direct pressure hydraulic pliers according to claim 4, characterized in that: The connecting hole is a countersunk hole.

6. The direct pressure hydraulic pliers according to claim 2, characterized in that: The guide frame is provided with fixing bolts, and the fixing bolts connect two oppositely arranged frames of the guide frame.

7. The direct pressure hydraulic pliers according to claim 6, characterized in that: A sheath is provided on the fixing bolt, and the sheath is arranged between the two oppositely arranged frames.

8. The direct pressure hydraulic pliers according to claim 2, characterized in that: A handle is provided on the guide frame.

9. The direct pressure hydraulic pliers according to claim 2, characterized in that: The fixed clamp arm is integrally arranged with the guide frame.

10. The direct pressure hydraulic pliers according to claim 1, characterized in that: A pressure pad is provided on one side of the fixed caliper arm close to the movable caliper arm and on one side of the movable caliper arm close to the fixed caliper arm.

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