CN214269978U

CN214269978U - Tower crane load lifting detection device

Info

Publication number: CN214269978U
Application number: CN202120224395.9U
Authority: CN
Inventors: 敖彬
Original assignee: Zhijiantong Chengdu Technology Co ltd
Current assignee: Zhijiantong Chengdu Technology Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-09-24
Anticipated expiration: 2031-01-27

Abstract

The utility model discloses a tower crane load lifting detection device relates to tower crane technical field. The utility model discloses a mount, be provided with on the mount and be used for forming the clearance with fixed tubular product and cup joint the installation through-hole of being connected, the axis all parallels the jackshaft with the axis of installation through-hole, first side axle and second side axle are about the plane symmetry at jackshaft and installation through-hole's axis place, the jackshaft sets up to the pin shaft type sensor, and the swivelling joint has middle pulley, first side axle and second side axle rotate respectively and are connected with the same first side pulley of size and second side pulley, be provided with three anti-disengaging spare that is located middle pulley respectively on the mount, first side pulley and second side pulley are used for the one side that contacts with the lifting rope. When the lifting rope is used, the original trend of the lifting rope is not changed, and the original stress structure of the tower crane is not changed.

Description

Tower crane load lifting detection device

Technical Field

The utility model relates to a tower crane technical field, more specifically say, relate to a tower crane load lifting detection device.

Background

The existing tower crane lifting capacity detection device is of a single-pulley structure taking a pin shaft type sensor as a shaft, as shown in fig. 3, when the device is used, the device is fixed on a tower crane, and a lifting rope is pulled to a certain angle for measurement. Will cause that: firstly, the original direction of the lifting rope can be changed; secondly, the lifting rope can be to the whole power that produces of device, and this power needs tower crane itself to balance, has changed the original atress structure of tower crane, has the potential safety hazard.

Therefore, how to manufacture the tower crane lifting capacity detection device does not change the original trend of a lifting rope when in use, does not change the original stress structure of the tower crane, and becomes a problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tower crane load lifting detection device, its original trend that does not change the lifting rope when using also can not change the original atress structure of tower crane.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model provides a tower crane load capacity detection device, including the mount, be provided with on the mount and be used for forming the clearance with fixed tubular product and cup joint the installation through-hole of being connected, the axis all with jackshaft, first side shaft and the second side shaft that the axis of installation through-hole paralleled, first side shaft with the second side shaft about the jackshaft with the plane symmetry at installation through-hole's axis place, the jackshaft sets up to the round pin axle type sensor to the swivelling joint has middle pulley, first side shaft with the second side shaft rotates respectively and is connected with the same first side pulley of size and second side pulley, be provided with three on the mount and be located respectively middle pulley first side pulley with second side pulley is used for the anticreep spare with the one side that the lifting rope contacted.

Optionally, a radial dimension of the intermediate sheave is greater than a radial dimension of the first side sheave and the second side sheave.

Optionally, an included angle formed by the middle pulley and two internal tangents of the first side pulley and the second side pulley is 120 degrees.

Optionally, the fixing frame includes two fixing plates arranged at intervals and a fixing tube fixedly connected to the two fixing plates, and an axis of the fixing tube is perpendicular to the fixing plates and penetrates through the two fixing plates.

Optionally, the fixing plate and the fixing tube are both made of metal and are connected by welding.

Optionally, the anti-dropping part is a rotating part with an axis parallel to the axis of the mounting through hole.

Optionally, the first side shaft and the second side shaft are both provided as pin bolts connected to the two fixing plates through nuts, and the first side pulley and the second side pulley are rotatably connected to the pin bolts through bearings and sleeves.

Optionally, the bearing is two deep groove ball bearings arranged in parallel.

Optionally, the anti-dropping part comprises a pin shaft with a hole, which is connected to the two fixing plates and is parallel to the axis of the mounting through hole.

Optionally, the anti-falling part further comprises a cylindrical pipe sleeved on the pin shaft with the hole in a clearance mode.

The utility model provides a technical scheme can include following beneficial effect: the utility model discloses a mount, be provided with on the mount and be used for forming the clearance with fixed tubular product and cup joint the installation through-hole of being connected, the axis all parallels the jackshaft with the axis of installation through-hole, first side axle and second side axle are about the plane symmetry at jackshaft and installation through-hole's axis place, the jackshaft sets up to the pin shaft type sensor, and the swivelling joint has middle pulley, first side axle and second side axle rotate respectively and are connected with the same first side pulley of size and second side pulley, be provided with three anti-disengaging spare that is located middle pulley respectively on the mount, first side pulley and second side pulley are used for the one side that contacts with the lifting rope. When the lifting rope is used, the original trend of the lifting rope is not changed, and the original stress structure of the tower crane is not changed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, and the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a perspective view of a tower crane load detection apparatus shown in some embodiments;

FIG. 2 is an exploded view of a tower crane load detection apparatus shown in some embodiments;

FIG. 3 is a schematic diagram of the operation of a prior art tower crane weight detection apparatus;

FIG. 4 is a schematic diagram of the operation of the tower crane load detection apparatus shown in some embodiments.

In the figure: 1. a fixed mount; 2. a drop-off prevention member; 3. a middle pulley; 4. a first side pulley; 5. a second side pulley; 6. a sleeve; 7. a bearing; 8. a pin bolt; 9. a nut; 10. a limiting plate; 11. a fixing plate; 12. a fixed tube; 21. a pin shaft with a hole; 22. a cylindrical tube; 23. a lifting rope; 24. fixing the pipe; 31. a pin-axis sensor; 101. and installing the through hole.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Specifically, "front" and "rear" refer to directions perpendicular to the plane of the paper. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus or methods consistent with certain aspects of the present invention.

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

Referring to fig. 1, 2 and 4, the utility model provides a tower crane lifting capacity detection device, which comprises a fixing frame 1, wherein the fixing frame 1 is provided with an installation through hole 101, the installation through hole 101 is used for forming clearance sleeve connection with a fixed pipe 24, the fixing frame 1 is also provided with a middle shaft, a first side shaft and a second side shaft, the first side shaft and the second side shaft are symmetrical about the plane where the axis of the middle shaft and the axis of the installation through hole 101 are located, the middle shaft is provided with a pin shaft type sensor 31 and is rotatably provided with a middle pulley 3, the first side shaft and the second side shaft are respectively rotatably connected with a first side pulley 4 and a second side pulley 5, the first side pulley 4 and the second side pulley 5 have the same size, the fixing frame 1 is provided with three anti-falling parts 2, the anti-falling parts 2 are respectively located on the middle pulley 3, one side where the first side pulley 4 and the second side pulley 5 are contacted with a lifting rope 23, and are arranged in one-to-one correspondence therewith.

During the use, cup joint this tower crane load capacity detection device on fixed tubular product 24 through installation through-hole 101 clearance, fixed tubular product 24 passes through the clamp or other connecting pieces are fixed on the tower crane. The fixed pipe 24 may be selected from existing pipe at the construction site. At this moment, this tower crane load capacity detection device can follow fixed tubular product 24 and rotate also can follow fixed tubular product 24 and slide, and anticreep piece 2 can prevent that lifting rope 23 from deviating from the pulley groove.

As shown in fig. 4, after the lifting rope 23 passes through the tower crane lifting amount detection device, the original direction is unchanged (the entering direction and the exiting direction of the lifting rope 23 are the same); secondly, the force of the lifting rope 23 on the middle pulley 3 is transmitted to the pin shaft type sensor 31 for tension measurement, and meanwhile, the resultant force of the lifting rope 23 on the first side pulley 4 and the second side pulley 5 is equal to the force on the middle pulley 3 in magnitude and opposite in direction, so that the resultant force of the lifting rope 23 on the tower crane lifting capacity detection device is 0, a new force effect cannot be generated on a tower crane body, and the original stressed structure is not changed; when the tower crane is hoisted, the lifting rope 23 sometimes shakes forwards and backwards or rotates left and right, the tower crane lifting capacity detection device can slide along the fixed pipe 24 along with the forward and backward shaking of the lifting rope 23 and rotate around the fixed pipe 24 along with the leftward and rightward swinging of the lifting rope 23, and therefore new acting force generated on the tower crane body due to the forward and backward shaking or the leftward and rightward rotating of the lifting rope 23 is eliminated.

Wherein the radial dimension of the intermediate pulley 3 is greater than the radial dimensions of the first side pulley 4 and the second side pulley 5. Because middle pulley 3 is great than first side pulley 4 and the 5 atress of second side pulley, and this kind of structure, keep this tower crane load capacity detection device's orientation in lifting rope 23 easily, difficult whole emergence is rotated to make lifting rope 23 get into the direction and wear out the direction the same all the time.

The included angle formed by the middle pulley 3 and two internal tangents of the first side pulley 4 and the second side pulley 5 is 120 degrees. Therefore, the included angle of the two sections of the lifting rope 23 penetrating in and out from the middle pulley 3 is 120 degrees, the resultant force of the lifting rope 23 on the middle pulley 3 is exactly equal to the tension of the lifting rope 23, and the accurate measurement is convenient.

The fixing frame 1 comprises two fixing plates 11, the two fixing plates 11 are arranged at intervals and connected through a fixing pipe 12, and the fixing pipe 12 is perpendicular to the fixing plates 11 and penetrates through the two fixing plates 11. The structure is simple and the manufacturing cost is low.

The fixing plate 11 is provided with a through hole for the pin shaft type sensor 31 to pass through, the pin shaft type sensor 31 is provided with a clamping groove, and the limiting plate 10 extends into the clamping groove and is fixed on the fixing plate 11 through a bolt to fix the pin shaft type sensor 31. The middle pulley 3 is rotatably connected to the pin shaft type sensor 31 through a bearing 7 and a sleeve 6, the sleeve 6 is arranged on both sides of the bearing 7, one end of the sleeve 6 abuts against the bearing 7, and the other end of the sleeve 6 abuts against the fixing plate 11. The bearings 7 may be provided as two deep groove ball bearings arranged side by side.

Wherein, fixed plate 11 and fixed pipe 12 all set up to the metal material to through welded connection. Specifically, the fixing plate 11 is made of a steel plate, the fixing tube 12 is made of a steel pipe, the fixing plate 11 is provided with a through hole, the fixing tube 12 passes through the through hole to be welded, and two end faces of the fixing tube 12 are flush with the outer wall of the fixing plate 11.

The detachment prevention member 2 may be provided as a rotation member having an axis parallel to the axis of the mounting through-hole 101. When the lifting rope 23 loosens and tends to fall out of the pulley groove, the lifting rope will contact with the anti-falling part 2 and be blocked, and sliding friction is generated between the lifting rope 23 and the anti-falling part 2 at the moment, so that the abrasion of the lifting rope 23 can be reduced.

The first side shaft and the second side shaft are both provided with pin bolts 8, through holes are formed in corresponding positions of the fixing plate 11, the pin bolts 8 penetrate through the through holes and are fixed on the fixing plate 11 through nuts 9, and the first side pulley 4 and the second side pulley 5 are rotatably connected onto the pin bolts 8 through bearings 7 and sleeves 6. Both sides of the bearing 7 are provided with sleeves 6, and both ends of the sleeves 6 are respectively contacted with the inner wall of the fixing plate 11 and the side wall of the bearing 7. In this way, the sleeve 6 can play a role in axially positioning the bearing 7 and at the same time can play a role in supporting the two fixing plates 11. The pin bolt 8 is used as a rotating shaft, and the installation is simple and convenient. Wherein, the bearing 7 can be provided as two deep groove ball bearings arranged in parallel. Two deep groove ball bearings arranged in parallel can bear the axial force and the radial force of the lifting rope 23 to the middle pulley 3 when the lifting rope swings irregularly.

The anti-falling part 2 is provided with a pin shaft 21 with a hole, the fixing plate 11 is provided with a through hole at the corresponding position, the pin shaft 21 with the hole penetrates through the through hole, and a cotter pin penetrates through the hole of the pin shaft 21 with the hole to prevent the pin shaft 21 with the hole from falling off. The pin shaft 21 with the hole is adopted, so that the assembly and disassembly are convenient.

The anti-falling part 2 further comprises a cylindrical pipe 22, and the cylindrical pipe 22 is sleeved on the pin shaft 21 with the hole in a clearance mode and can rotate around the pin shaft 21 with the hole. When the lifting rope 23 loosens and tends to fall out of the pulley groove, the lifting rope can contact the cylindrical pipe 22, and the lifting rope 23 forms rolling friction with the cylindrical pipe 22 when moving, so that the abrasion of the lifting rope 23 is reduced. A small gap is left between the two ends of the cylindrical tube 22 and the inner wall of the fixing plate 11, so that the cylindrical tube 22 can play a supporting role when the two fixing plates 11 are deformed to be close to each other.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The utility model provides a tower crane load lifting detection device, its characterized in that, includes mount (1), be provided with on mount (1) and be used for forming clearance with fixed tubular product (24) and cup joint mounting hole (101) of being connected, the axis all with jackshaft, first side axle and the second side axle that the axis of mounting hole (101) parallels, first side axle with the second side axle about the jackshaft with the plane symmetry at the axis place of mounting hole (101), the jackshaft sets up to round pin shaft type sensor (31) to the swivelling joint has intermediate pulley (3), first side axle with second side axle rotates respectively and is connected with first side pulley (4) and second side pulley (5) that the size is the same, be provided with three on mount (1) and be located intermediate pulley (3) first side pulley (4) with second side pulley (5) are used for anticreep spare (2) with one side that lifting rope (23) contacted.

2. The tower crane load lifting detection apparatus of claim 1, wherein the radial dimension of the intermediate pulley (3) is larger than the radial dimensions of the first side pulley (4) and the second side pulley (5).

3. The tower crane load lifting detection device of claim 1, wherein the included angle formed by the middle pulley (3) and two internal tangents of the first side pulley (4) and the second side pulley (5) is 120 degrees.

4. The tower crane load lifting detection device of claim 1, wherein the fixing frame (1) comprises two fixing plates (11) arranged at intervals and a fixing pipe (12) fixedly connected with the two fixing plates (11), and the axis of the fixing pipe (12) is perpendicular to the fixing plates (11) and penetrates through the two fixing plates (11).

5. The tower crane load capacity detection device of claim 4, wherein the fixing plate (11) and the fixing pipe (12) are made of metal and are connected by welding.

6. The tower crane load capacity detection device according to claim 1, wherein the anti-release member (2) is provided as a rotating member having an axis parallel to the axis of the mounting through hole (101).

7. The tower crane load lifting detection device according to claim 4, wherein the first side shaft and the second side shaft are both provided with pin bolts (8) connected to the two fixing plates (11) through nuts (9), and the first side pulley (4) and the second side pulley (5) are rotatably connected to the pin bolts (8) through bearings (7) and sleeves (6).

8. The tower crane load lifting detection device of claim 7, wherein the bearing (7) is two deep groove ball bearings arranged in parallel.

9. The tower crane load lifting detection device of claim 4, wherein the anti-release member (2) comprises a pin shaft (21) with a hole which is connected to the two fixing plates (11) and is parallel to the axis of the mounting through hole (101).

10. The tower crane load capacity detection device of claim 9, wherein the anti-drop piece (2) further comprises a cylindrical pipe (22) sleeved on the pin shaft (21) with the hole in a clearance mode.