Cement concrete pipe hoisting clamp

Abstract

The utility model discloses a cement concrete pipe hoisting clamp. The cement concrete pipe hoisting clamp comprises a clamping assembly, a telescopic assembly and a limiting assembly. The clamping assembly comprises a rotating shaft, two connecting pieces, two first clamping jaws and two second clamping jaws. One ends of the two first clamping jaws are connected with one ends of the two second clamping jaws respectively, the two first clamping jaws are symmetrically arranged relative to a workpiece, and the inner sides of the two first clamping jaws abut against the workpiece; the two second clamping jaws are symmetrically arranged relative to the workpiece, the two second clamping jaws intersect at one point and are connected through a rotating shaft, and the other ends of the two second clamping jaws are connected with connecting pieces; the fixed end of the telescopic assembly is connected with the crane, the first movable end of the telescopic assembly abuts against the workpiece, and the second movable end of the telescopic assembly is connected with the second clamping jaw. Limiting assemblies are arranged at the joints of the two first clamping jaws and the two second clamping jaws. According to the hoisting clamp, the technical effects that the hoisting clamp stably clamps the cement concrete pipe, and the construction cost is saved are achieved.

Description

Technical Field

[0001] This application relates to the technical field of lifting fixtures, and particularly to a lifting fixture for cement concrete pipes. Background Art

[0002] Cylindrical cement concrete pipes are often hoisted by a traveling crane at the construction site. Since the cement concrete pipes are cylindrical, during the hoisting process, it is often necessary to add a fixture to the hoisting end of the traveling crane to clamp the cylindrical objects such as cement concrete pipes before hoisting.

[0003] In the prior art, the lifting fixtures used for hoisting cement concrete pipes have complex structures. For example, the utility model patent with the publication number CN102923563A discloses a universal lifting fixture for round pipes, which includes clamping pliers, a base, a reduction motor installed at the right end of the base, a left screw rod and a right screw rod installed in the base, a saddle-shaped seat, etc. Its structure is relatively complex, and it is easy for the cement concrete pipe to fall off from the lifting fixture, which is likely to result in high construction costs and potential safety hazards caused by the falling of the cement concrete pipe. Utility Model Content

[0004] The embodiments of this application provide a lifting fixture for cement concrete pipes, which solves the problems in the prior art that the lifting fixture for cement concrete pipes has a complex structure and is prone to falling off between the cement concrete pipe and the lifting fixture, thus easily causing safety accidents, and achieves the technical effects of stably clamping the cement concrete pipe by the lifting fixture and saving construction costs.

[0005] The embodiments of this utility model provide a lifting fixture for cement concrete pipes, which includes a clamping component, a telescopic component and a limiting component; the clamping component includes a rotating shaft, two connecting pieces, two first clamping jaws and two second clamping jaws; one ends of the two first clamping jaws are respectively connected to one ends of the two second clamping jaws, the two first clamping jaws are symmetrically arranged relative to the workpiece, and the inner sides of the two first clamping jaws are both in contact with the workpiece; the two second clamping jaws are symmetrically arranged relative to the workpiece, the two second clamping jaws intersect at a point and are connected by the rotating shaft, and the other ends of the two second clamping jaws are both connected with the connecting pieces; the fixed end of the telescopic component is connected to the crane, the first movable end of the telescopic component is in contact with the workpiece, and the second movable end of the telescopic component is connected to the second clamping jaw; the limiting component is arranged at the connection of the two first clamping jaws and the two second clamping jaws; when the lifting fixture is in the initial state, the second movable end of the telescopic component is in the first position, and the two second clamping jaws are in the open state; when the lifting fixture is in the working state, after the first movable end of the telescopic component is in contact with the workpiece, it moves towards the direction close to the connecting piece, and the second movable end of the telescopic component is in the second position, so that the two second clamping jaws are in the clamping state.

[0006] In a possible implementation, the telescopic assembly includes a cross bar, a vertical rod, a telescopic rod, and a contact plate; one end of the telescopic rod is disposed within the vertical rod, and the telescopic rod is slidably connected to the vertical rod; the other end of the telescopic rod is connected to the contact plate, and the contact plate abuts against the workpiece; the cross bar is connected to the outside of the telescopic rod and is configured to abut against the connecting member; when the lifting fixture is in a non-operating state, the telescopic rod drives the cross bar away from the connecting member, and the two second jaws are in an open state; when the lifting fixture is in an operating state, after the contact plate abuts against the workpiece, it moves in a direction close to the connecting member, the cross bar abuts against the connecting member, and the two connecting members are lifted upward, so that the two second jaws are in a clamped state.

[0007] In a possible implementation, the telescopic assembly further includes an elastic member; the elastic member is disposed inside the vertical rod and the telescopic rod.

[0008] In a possible implementation, an anti-slip member is disposed on a side of the first jaw close to the workpiece; a wear-resistant member is disposed at an end of the first jaw away from the second jaw.

[0009] In a possible implementation, the limiting assembly includes a connecting shaft, a baffle, and a torsion spring; the baffle is connected to an end of the first jaw close to the second jaw; the first jaw is rotatably connected to the second jaw through the connecting shaft; the torsion spring is sleeved on the connecting shaft.

[0010] In a possible implementation, the included angle between the baffle and the second jaw is 60° to 120°.

[0011] In a possible implementation, two sets of the clamping assemblies are provided in the length direction of the workpiece; the two sets of clamping assemblies are symmetrically arranged and connected, and the telescopic assembly is disposed between the two sets of clamping assemblies.

[0012] In a possible implementation, a side of the second jaw close to the workpiece is an arc structure.

[0013] One or more technical solutions provided by the present application have at least the following technical effects or advantages:

[0014] In an embodiment of the present utility model, a hoisting fixture for a cement concrete pipe is adopted, which includes a clamping assembly, a telescopic assembly, and a limiting assembly; the clamping assembly includes two connecting members, two first clamping jaws, and two second clamping jaws; one ends of the two first clamping jaws are respectively connected to one ends of the two second clamping jaws, the two first clamping jaws are symmetrically arranged with respect to the workpiece, and the inner sides of the two first clamping jaws are both in contact with the workpiece; the first clamping jaws are respectively in contact with both sides of the workpiece, and the workpiece can be lifted by the clamping of the first clamping jaws, so as to achieve the technical effect of moving the workpiece to the target position. The two second clamping jaws are symmetrically arranged with respect to the workpiece, the two second clamping jaws intersect at a point and are connected by a rotating shaft, and the other ends of the two second clamping jaws are both connected with connecting members; the two second clamping jaws can both rotate around the rotating shaft, so as to achieve the technical effect of the ends of the second clamping jaws close to the workpiece opening and contracting; the fixed end of the telescopic assembly is connected to the crane, the first movable end of the telescopic assembly is in contact with the workpiece, and the second movable end of the telescopic assembly is connected to the second clamping jaw; the telescopic assembly can act on the rotating shaft to move the rotating shaft away from or close to the workpiece, so as to achieve the state of the second clamping jaw being open and contracted; a limiting assembly is arranged at the connection of the two first clamping jaws and the two second clamping jaws; when hoisting the workpiece, the first clamping jaws open under the action of the workpiece and can place the workpiece inside the first clamping jaws. Further, when under the hoisting fixture, the first movable end of the telescopic assembly is in contact with the workpiece, so that the second movable end of the telescopic assembly moves away from the workpiece, so as to achieve the state that the ends of the second clamping jaws close to the workpiece are in a clamped state; when the hoisting fixture is in the initial state, the second movable end of the telescopic assembly is in the first position, and the two second clamping jaws are in the open state; when the hoisting fixture is in the working state, after the first movable end of the telescopic assembly is in contact with the workpiece and moves towards the connecting member, the second movable end of the telescopic assembly is in the second position, so that the two second clamping jaws are in the clamped state. This application solves the problems in the prior art that the hoisting fixture for a cement concrete pipe has a complex structure, and it is easy for the cement concrete pipe to fall off from the hoisting fixture, thus easily causing safety accidents, and realizes the technical effects of the hoisting fixture stably clamping the cement concrete pipe and saving construction costs. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the description of the embodiments of the present utility model will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is the front view of a hoisting fixture for a cement concrete pipe provided by an embodiment of the present application;

[0017] Figure 2This is the left view of a hoisting fixture for cement concrete pipes provided by an embodiment of the present application.

[0018] Icon: 1 - clamping assembly; 11 - first jaw; 12 - second jaw; 13 - connecting member; 14 - rotating shaft; 2 - telescopic assembly; 21 - cross bar; 22 - vertical rod; 23 - telescopic rod; 24 - abutting plate; 3 - limiting assembly; 31 - connecting shaft; 32 - baffle; 33 - torsion spring. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. The terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0021] The embodiments of the present utility model provide a hoisting fixture for cement concrete pipes, as Figure 1 and Figure 2As shown in the figure, it includes a clamping assembly 1, a telescopic assembly 2, and a limiting assembly 3; the clamping assembly 1 includes a rotating shaft 14, two connecting members 13, two first clamping jaws 11, and two second clamping jaws 12; one ends of the two first clamping jaws 11 are respectively connected to one ends of the two second clamping jaws 12, the two first clamping jaws 11 are symmetrically arranged with respect to the workpiece, and the inner sides of the two first clamping jaws 11 are both in contact with the workpiece; the two second clamping jaws 12 are symmetrically arranged with respect to the workpiece, the two second clamping jaws 12 intersect at a point and are connected by a rotating shaft 14, and the other ends of the two second clamping jaws 12 are both connected with connecting members 13; the fixed end of the telescopic assembly 2 is connected to a crane, the first movable end of the telescopic assembly 2 is in contact with the workpiece, and the second movable end of the telescopic assembly 2 is connected to the second clamping jaw 12; a limiting assembly 3 is arranged at the connection of the two first clamping jaws 11 and the two second clamping jaws 12; when the lifting fixture is in the initial state, the second movable end of the telescopic assembly 2 is in the first position, and the two second clamping jaws 12 are in the open state; when the lifting fixture is in the working state, after the first movable end of the telescopic assembly 2 is in contact with the workpiece, it moves in the direction close to the connecting member 13, and the second movable end of the telescopic assembly 2 is in the second position, so that the two second clamping jaws 12 are in the clamping state.

[0022] Exemplarily, the first clamping jaws 11 are respectively in contact with both sides of the workpiece. Through the clamping of the first clamping jaws 11, the workpiece can be lifted, thereby achieving the technical effect of moving the workpiece to the target position. Both of the two second clamping jaws 12 can rotate around the rotating shaft 14, thereby achieving the technical effect of the end of the second clamping jaw 12 close to the workpiece opening and contracting; through the interaction between the movable end of the telescopic assembly 2 and the workpiece, the second clamping jaw 12 rotates around the rotating shaft 14, thereby achieving the opening and contraction of the second clamping jaw 12; when hoisting the workpiece, the first clamping jaws 11 open under the action of the workpiece and can place the workpiece inside the first clamping jaws 11. Further, when the lifting fixture descends above the workpiece, the first movable end of the telescopic assembly 2 is in contact with the workpiece. The telescopic assembly 2 can drive the rotating shaft 14 to move up and down, thereby achieving the opening and contraction of the second clamping jaw 12.

[0023] In the embodiment of the present application, as Figure 1 and Figure 2As shown, the telescopic assembly 2 includes a cross bar 21, a vertical rod 22, a telescopic rod 23, and an abutting plate 24; one end of the telescopic rod 23 is disposed within the vertical rod 22, and the telescopic rod 23 is slidably connected to the vertical rod 22; the other end of the telescopic rod 23 is connected to the abutting plate 24, and the abutting plate 24 abuts against the workpiece; a cross bar 21 is connected to the outside of the telescopic rod 23, and the cross bar 21 is configured to abut against the connecting member 13; when the lifting fixture is in a non-operating state, the telescopic rod 23 drives the cross bar 21 away from the connecting member 13, and the two second jaws 12 are in an open state; when the lifting fixture is in an operating state, after the abutting plate 24 abuts against the workpiece, it moves in a direction close to the connecting member 13, the cross bar 21 abuts against the connecting member 13, and the two connecting members 13 are lifted upward, so that the two second jaws 12 are in a clamping state.

[0024] Exemplarily, the functions of the vertical rod 22 and the telescopic rod 23 can be realized by hydraulic devices such as hydraulic cylinders, and the second jaws 12 can clamp the workpiece when contacting the workpiece.

[0025] Exemplarily, the cross bar 21 can improve the mechanical properties of the lifting fixture and can increase the load capacity limit of the lifting fixture.

[0026] In the embodiment of the present application, as Figure 1 and Figure 2 shown, the telescopic assembly 2 further includes an elastic member; an elastic member is disposed inside the vertical rod 22 and the telescopic rod 23.

[0027] Exemplarily, elastic members are disposed inside the telescopic rod 23 and the vertical rod 22, and can enable the telescopic rod 23 to return to the initial state after one lifting, so that the second jaws 12 are in an open state.

[0028] In the embodiment of the present application, as Figure 1 and Figure 2 shown, an anti-slip member is provided on the side of the first jaw 11 close to the workpiece; a wear-resistant member is provided at one end of the first jaw 11 away from the second jaw 12.

[0029] Exemplarily, when lifting the workpiece, the first jaw 11 opens under the action of the workpiece and can place the workpiece inside the first jaw 11. During this process, the end of the first jaw 11 away from the second jaw 12 contacts and rubs against the workpiece. A wear-resistant member is provided here, such as inlaying a polytetrafluoroethylene strip at the end of the first jaw 11, which can improve the overall wear resistance of the first jaw 11.

[0030] Exemplarily, an anti-slip member is provided on the side of the first jaw 11 close to the workpiece, which can improve the construction safety during the process of clamping and lifting the workpiece.

[0031] In the embodiment of the present application, as Figure 1 and Figure 2As shown, the limit component 3 includes a connecting shaft 31, a baffle 32 and a torsion spring 33; the baffle 32 is connected to one end of the first jaw 11 close to the second jaw 12; the first jaw 11 is rotatably connected to the second jaw 12 through the connecting shaft 31; the torsion spring 33 is sleeved on the connecting shaft 31.

[0032] Exemplarily, the connecting shaft 31 is fixedly connected to the first jaw 11, the rotating shaft 14 is rotatably connected to the second jaw 12, a baffle 32 is connected to one end of the first jaw 11 close to the second jaw 12, the torsion spring 33 is sleeved on the connecting shaft 31, one end of the torsion spring 33 abuts against the second jaw 12, and the other end of the torsion spring 33 abuts against the baffle 32; through the torsion spring 33, when the first jaw 11 contacts the workpiece, the rotating shaft 14 can rotate under the action of the workpiece, the torsion spring 33 is compressed, and after the workpiece reaches a certain position, it returns to its original state, so that the workpiece is placed inside the first jaw 11 and safely clamped, ensuring the safety of the workpiece during hoisting.

[0033] In the embodiment of the present application, as Figure 1 and Figure 2 shown, the included angle between the baffle 32 and the second jaw 12 is 60° to 120°.

[0034] Exemplarily, the designer can set the initial angles of the first jaw 11 and the second jaw 12 according to their own needs.

[0035] In the embodiment of the present application, as Figure 1 and Figure 2 shown, two sets of clamping components 1 are arranged in the length direction of the workpiece; the two sets of clamping components 1 are symmetrically arranged and connected, and the telescopic component 2 is arranged between the two sets of clamping components 1.

[0036] Exemplarily, the two sets of symmetrically arranged clamping components 1 can improve the stability of the hoisting fixture and can increase the load capacity limit of the hoisting fixture.

[0037] In the embodiment of the present application, as Figure 1 and Figure 2 shown, the side of the second jaw 12 close to the workpiece is an arc structure.

[0038] Exemplarily, the arc structure can avoid interference between the hoisting fixture and the workpiece during hoisting.

[0039] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, reference can be made to each other. The key points described in each embodiment are the differences from other embodiments.

[0040] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting the present application; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.

Claims

1. A cement concrete pipe hoisting fixture, characterized in that: It comprises a clamping component (1), a telescopic component (2) and a limiting component (3); The clamping assembly (1) comprises a rotating shaft (14), two connecting members (13), two first clamping jaws (11) and two second clamping jaws (12); One end of the two first clamping jaws (11) is respectively connected to one end of the two second clamping jaws (12), the two first clamping jaws (11) are symmetrically arranged relative to the workpiece, and the inner sides of the two first clamping jaws (11) are in contact with the workpiece; The two second clamping jaws (12) are symmetrically arranged relative to the workpiece, the two second clamping jaws (12) intersect at one point and are connected via the rotating shaft (14), and the other ends of the two second clamping jaws (12) are connected to the connecting member (13); The fixed end of the telescopic assembly (2) is connected to the crane, the first movable end of the telescopic assembly (2) is in contact with the workpiece, and the second movable end of the telescopic assembly (2) is connected to the second clamping jaw (12); The limiting assembly (3) is provided at the connection between the two first clamping jaws (11) and the two second clamping jaws (12); When the lifting fixture is in an initial state, the second movable end of the telescopic assembly (2) is in a first position, and the two second clamping jaws (12) are in an open state; When the lifting fixture is in working condition, the first movable end of the telescopic component (2) abuts against the workpiece and then moves in a direction close to the connecting member (13), and the second movable end of the telescopic component (2) is in a second position, so that the two second clamping jaws (12) are in a clamping state.

2. A cement concrete pipe hoisting fixture according to claim 1, characterized in that: The telescopic assembly (2) comprises a crossbar (21), a vertical bar (22), a telescopic rod (23) and an abutment plate (24); One end of the telescopic rod (23) is disposed in the vertical rod (22), and the telescopic rod (23) is slidably connected to the vertical rod (22); The other end of the telescopic rod (23) is connected to the abutment plate (24), and the abutment plate (24) abuts against the workpiece; The outer side of the telescopic rod (23) is connected to the cross bar (21), and the cross bar (21) is configured to abut against the connecting member (13); When the lifting fixture is in a non-working state, the telescopic rod (23) drives the cross bar (21) away from the connecting member (13), and the two second clamping jaws (12) are in an open state; When the lifting fixture is in working state, the abutment plate (24) abuts against the workpiece and then moves towards the direction approaching the connecting member (13), the cross bar (21) abuts against the connecting member (13), and the two connecting members (13) are pulled upward, so that the two second clamping jaws (12) are in a clamping state.

3. A cement concrete pipe hoisting fixture according to claim 2, characterized in that: The telescopic assembly (2) further comprises an elastic member; The elastic member is arranged inside the vertical rod (22) and the telescopic rod (23).

4. A cement concrete pipe hoisting fixture according to claim 1, characterized in that: A non-slip part is provided on a side of the first clamping jaw (11) close to the workpiece; An end of the first clamping jaw (11) away from the second clamping jaw (12) is provided with a wear-resistant part.

5. The cement concrete pipe hanging fixture according to claim 1, characterized in that: The limiting assembly (3) comprises a connecting shaft (31), a baffle (32) and a torsion spring (33); The baffle (32) is connected to one end of the first clamping jaw (11) close to the second clamping jaw (12); The first clamping jaw (11) is rotatably connected to the second clamping jaw (12) via the connecting shaft (31); The torsion spring (33) is sleeved on the connecting shaft (31).

6. A cement concrete pipe hoisting fixture according to claim 5, characterized in that: The included angle between the baffle (32) and the second clamping jaw (12) is 60° to 120°.

7. The cement concrete pipe hanging fixture according to claim 1, characterized in that: The clamping components (1) are arranged in two groups in the length direction of the workpiece; The two groups of clamping assemblies (1) are symmetrically arranged and connected, and the telescopic assembly (2) is arranged between the two groups of clamping assemblies (1).

8. The cement concrete pipe hanging fixture according to claim 1, characterized in that: The side of the second clamping jaw (12) close to the workpiece is an arc structure.

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