Pulley bracket for lifting rod and mounting structure thereof

Abstract

The utility model relates to the field of lifting machinery discloses a pulley support for lifting rod and mounting structure, the pulley support includes fixed plate, first and second transverse pulley plate, first and second longitudinal pulley plate, and the one end of fixed plate is equipped with a plurality of recesss, first transverse pulley plate is the groove type structure, and its end is equipped with a plurality of first convex spurs of intercalation with recess, and is equipped with the over rope groove on the board surface, second transverse pulley plate is L type board, and its one end is equipped with the second convex spur of intercalation with recess, first transverse pulley plate is inserted after welding with fixed plate longitudinally, and the one end of second transverse pulley plate is inserted after welding with fixed plate transversely, and the other end is abutted with first transverse pulley plate, the structure of first and second longitudinal pulley plate is same, and the bottom of both is equipped with the connecting plate that can insert over rope groove and extend to second transverse pulley plate, and first and second longitudinal pulley plate are all respectively with first and second transverse pulley plate welding. The utility model has the advantages of high structural strength, high welding precision and easy welding.

Description

Technical Field

[0001] This utility model relates to the field of lifting machinery, and in particular to a pulley bracket for a lifting rod and its installation structure. Background Technology

[0002] Chinese Patent CN201610907664.5, filed on October 19, 2016, discloses a self-locking, concealed lifting mechanism for rotation. The pulley assembly of this lifting mechanism includes a transverse pulley and a longitudinal pulley disposed on the inner side of the upper part of a lifting rod I. The transverse and longitudinal pulleys are mounted on the lifting rod using pulley brackets. Existing technologies employ methods such as those shown in the attached figure. Figure 2 The pulley bracket shown is used to mount the transverse pulley 30 and the longitudinal pulley 40. The mounting structure is as attached. Figure 1 As shown. The existing pulley bracket includes a fixed plate 1, a first transverse pulley plate 2, a second transverse pulley plate 3, a first longitudinal pulley plate 4, and a second longitudinal pulley plate 5. The first transverse pulley plate is L-shaped, with one end welded flush with the end of the fixed plate to one side of the fixed plate. The two ends of the second transverse pulley plate are welded to the fixed plate and the other ends of the first transverse pulley plate, respectively. The transverse pulley is installed between the first transverse pulley plate and the second transverse pulley plate. The first longitudinal pulley plate is welded to the fixed plate at the end of the first transverse pulley plate. The second longitudinal pulley plate is welded to the first transverse pulley plate opposite to the first longitudinal pulley plate. The longitudinal pulley is installed between the first longitudinal pulley plate and the second longitudinal pulley plate. A rope groove for the wire rope to pass through is provided on the first transverse pulley plate between the first longitudinal pulley plate and the second longitudinal pulley plate. The existing pulley bracket has the following defects:

[0003] 1. There is a problem of insufficient structural strength. For example, the first transverse pulley plate has an open slot, and only a small part of it is welded to the fixed plate. The second longitudinal pulley plate is welded to the first transverse pulley plate. When subjected to sudden load, it is easy to cause the structure to tear, deform or break.

[0004] 2. The welding is difficult and the welding progress is hard to guarantee. It is easy to encounter problems such as the holes on the pulley plate not being concentric due to large manufacturing errors, which makes it impossible to install the pulley.

[0005] Based on this, this application provides a high-structural-strength pulley bracket for lifting rods that can reduce manufacturing difficulty and improve welding accuracy to solve the above problems. Utility Model Content

[0006] This utility model aims to solve the technical problems existing in the prior art. Therefore, this utility model provides a high-strength pulley bracket for lifting rods and its installation structure, which reduces manufacturing difficulty and improves welding accuracy.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] In a first aspect, a pulley bracket for a lifting rod is provided, comprising a fixed plate, a first transverse pulley plate, a second transverse pulley plate, a first longitudinal pulley plate, and a second longitudinal pulley plate; one end of the fixed plate is provided with a plurality of grooves; the first transverse pulley plate is a groove-shaped structure formed by bending both ends at 90° to the same side, and one end of the plate is provided with a plurality of first tenons that interlock with the grooves, and a rope passage groove is provided on the end of the plate near the first tenons; the second transverse pulley plate is an L-shaped plate, and one end of the horizontal plate is provided with second tenons that interlock with the grooves on at least both sides; the first transverse pulley plate is longitudinally inserted into the fixed plate and then welded, one end of the second transverse pulley plate is transversely inserted into the fixed plate and then welded, and the other end abuts against the first transverse pulley plate; the first longitudinal pulley plate and the second longitudinal pulley plate have the same structure, and both have a connecting plate at the bottom that can be inserted into the rope passage groove and extend to the second transverse pulley plate, and the first longitudinal pulley plate and the second longitudinal pulley plate are respectively welded to the first transverse pulley plate and the second transverse pulley plate.

[0009] In some alternative embodiments, the thickness of the fixing plate is equal to the sum of the thickness of the first transverse pulley plate and the length of the second mortise.

[0010] In some optional embodiments, a third tenon is provided on the connecting plate of the first longitudinal pulley plate and the second longitudinal pulley plate, and a positioning hole is provided on the second transverse pulley plate to engage with the third tenon.

[0011] In some alternative embodiments, one side of the rope groove is attached to the inner surface of the side plate of the first transverse pulley plate, and the third protrusion of the first longitudinal pulley plate is inserted into the groove on the fixed plate and then welded to the fixed plate, the first transverse pulley plate and the second transverse pulley plate respectively.

[0012] Secondly, an installation structure for a pulley bracket for a lifting pole is provided, comprising a pole body, a pulley bracket disposed at the top of the pole body, and a pulley assembly disposed within the pulley bracket, wherein the pulley bracket is the pulley bracket for a lifting pole described in the above embodiments.

[0013] In some alternative embodiments, the fixing plate of the pulley bracket is provided with an adjusting plate on the inner side of the rod body. The fixing plate is fixed to the rod body by multiple screws, and the first transverse pulley plate and the second transverse pulley plate of the pulley bracket are fixed to the rod body at the ends away from the fixing plate by multiple screws.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The first transverse pulley plate has a large connection area with the fixed plate and high connection strength. At the same time, the connecting plates of the two longitudinal pulley plates are also connected to the second transverse pulley plate and the fixed plate respectively, which can effectively strengthen the strength of the pulley bracket and make the load capacity stronger.

[0016] 2. All components are positioned and welded using a concave-convex welding method, which improves the manufacturing precision of the pulley bracket, reduces manufacturing difficulty, increases production efficiency, and also improves the yield rate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0018] Figure 1 This is a diagram showing the installation structure of the existing first and second fixed pulleys on the rod via pulley brackets.

[0019] Figure 2 yes Figure 1 A schematic diagram of the pulley bracket is provided.

[0020] Figure 3 This is a schematic diagram of the pulley bracket provided by this utility model;

[0021] Figure 4 yes Figure 3 The provided exploded view;

[0022] Figure 5 This is a diagram showing the installation structure of the first and second fixed pulleys on the rod body via pulley brackets, as provided by this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1—Fixing plate, 1.1—Groove, 2—First transverse pulley plate, 2.1—First tenon, 2.2—Rope groove, 3—Second transverse pulley plate, 3.1—Second tenon, 3.2—Positioning hole, 4—First longitudinal pulley plate, 5—Second longitudinal pulley plate, a—Connecting plate, b—Third tenon, 10—Rod body, 20—Adjusting plate, 30—Transverse pulley, 40—Longitudinal pulley. Detailed Implementation

[0025] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the terms "first," "second," etc., used in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. The terms "installed," "connected," and "joined" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] Example 1

[0031] As attached Figure 3 and attached Figure 4 As shown, this embodiment provides a pulley bracket for a lifting rod, including a fixed plate 1, a first transverse pulley plate 2, a second transverse pulley plate 3, a first longitudinal pulley plate 4, and a second longitudinal pulley plate 5, wherein:

[0032] The fixed plate 1 has multiple grooves 1.1 at one end; the first transverse pulley plate 2 is a groove-shaped structure formed by bending both ends at 90° to the same side, and one end of it has multiple first tenons 2.1 that interlock with the grooves 1.1, and the end of the plate surface near the first tenons 2.1 has a rope groove 2.2; the second transverse pulley plate 3 is an L-shaped plate, and one end of its horizontal plate has at least two second tenons 3.1 that interlock with the grooves 1.1; the first transverse pulley plate 2 is longitudinally interlocked with the fixed plate 1 and then welded, and one end of the second transverse pulley plate 3 is transversely interlocked with the fixed plate 1 and then welded, and the other end abuts against the first transverse pulley plate 2. In this embodiment, the first transverse pulley plate 2 and the second transverse pulley plate 3 are respectively positioned and welded to the fixed plate 1 through a tenon and mortise structure, which can effectively reduce manufacturing difficulty and improve welding accuracy; at the same time, the first transverse pulley plate 2 is connected to the fixed plate 1 by its side plate, which has a higher connection strength compared with the existing structure.

[0033] Preferably, in this embodiment, the thickness of the fixing plate 1 is equal to the sum of the thickness of the first transverse pulley plate 2 and the length of the second tenon 3.1. That is, when the second transverse pulley plate is inserted into the fixing plate, the width between the end face of the second tenon and the outer side of the fixing plate is preferably equal to the thickness of the first transverse pulley plate. This design can better position the first transverse pulley plate.

[0034] The first longitudinal pulley plate 4 and the second longitudinal pulley plate 5 have the same structure. Both have a connecting plate a at their bottom that can be inserted through the rope groove 2.2 and extend to the second transverse pulley plate 2. The first longitudinal pulley plate 4 and the second longitudinal pulley plate 5 are welded to the first transverse pulley plate 2 and the second transverse pulley plate 3, respectively. This design allows both the first and second longitudinal pulley plates to connect with the first and second transverse pulley plates. Simultaneously, the connecting plate also acts as a connecting rib between the first and second transverse pulley plates, effectively strengthening the pulley support and improving its load-bearing capacity.

[0035] Example 2

[0036] Based on Embodiment 1, in order to improve the positioning accuracy of the first longitudinal pulley plate and the second longitudinal pulley plate, as shown in the attached figure... Figure 4 As shown, in this embodiment, a third tenon b is also provided on the connecting plate a of the first longitudinal pulley plate 4 and the second longitudinal pulley plate 5, and a positioning hole 3.2 is provided on the second transverse pulley plate 3 to engage with the third tenon b. In this embodiment, the first longitudinal pulley plate and the second longitudinal pulley plate are positioned and welded to the second transverse pulley plate through the tenon connection structure, which can also effectively reduce manufacturing difficulty and improve welding accuracy.

[0037] Example 3

[0038] Based on Embodiment 2, in this embodiment, one side of the rope groove 2.2 is attached to the inner surface of the side plate of the first transverse pulley plate 2. This design allows the third protruding tenon b on the connecting plate a of the first longitudinal pulley plate 4 to be inserted into the groove 1.1 of the fixing plate 1, while the connecting plate a of the second longitudinal pulley plate 5 is still inserted into the second transverse pulley plate 3. In this embodiment, the first longitudinal pulley plate 4 is welded to the fixing plate 1, the first transverse pulley plate 2, and the second transverse pulley plate 3 respectively, further improving the structural strength of the pulley bracket.

[0039] When installing the pulley bracket, as shown in the attached document... Figure 5 As shown, the fixing plate 1 of the pulley bracket is located inside the rod 10 and has an adjusting plate 20. The fixing plate 1 is fixed inside the rod 10 by multiple screws. The first transverse pulley plate 2 and the second transverse pulley plate 3 of the pulley bracket are fixed to the rod 10 at the ends away from the fixing plate 1 by multiple screws.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pulley bracket for a lifting rod, comprising a fixed plate, a first transverse pulley plate, a second transverse pulley plate, a first longitudinal pulley plate, and a second longitudinal pulley plate; characterized in that: One end of the fixing plate is provided with multiple grooves; The first transverse pulley plate is a groove-shaped structure formed by bending both ends to the same side at 90°. One end of the plate is provided with a plurality of first protrusions that are inserted into the groove, and a rope passage groove is provided on the end of the plate near the first protrusion. The second transverse pulley plate is an L-shaped plate, and one end of its horizontal plate is provided with a second tenon that is inserted into the groove at least on both sides; The first transverse pulley plate is longitudinally inserted into and then welded to the fixed plate. One end of the second transverse pulley plate is transversely inserted into and then welded to the fixed plate, and the other end abuts against the first transverse pulley plate. The first longitudinal pulley plate and the second longitudinal pulley plate have the same structure. Both of them have a connecting plate at the bottom that can be inserted into the rope groove and extend to the second transverse pulley plate. The first longitudinal pulley plate and the second longitudinal pulley plate are respectively welded to the first transverse pulley plate and the second transverse pulley plate.

2. The pulley bracket for the lifting rod according to claim 1, characterized in that: The thickness of the fixing plate is equal to the sum of the thickness of the first transverse pulley plate and the length of the second mortise.

3. The pulley bracket for the lifting rod according to claim 1, characterized in that: The connecting plate of the first longitudinal pulley plate and the second longitudinal pulley plate is also provided with a third protruding tenon, and the second transverse pulley plate is provided with a positioning hole that is inserted into the third protruding tenon.

4. The pulley bracket for the lifting rod according to claim 3, characterized in that: One side of the rope groove is attached to the inner surface of the side plate of the first transverse pulley plate. After the third protrusion of the first longitudinal pulley plate is inserted into the groove on the fixed plate, it is welded to the fixed plate, the first transverse pulley plate and the second transverse pulley plate respectively.

5. An installation structure for a pulley bracket for a lifting pole, comprising a pole body, a pulley bracket disposed at the top of the pole body, and a pulley assembly disposed within the pulley bracket, characterized in that: The pulley bracket is the pulley bracket for lifting rods as described in any one of claims 1 to 4.

6. The mounting structure of the pulley bracket for the lifting rod according to claim 5, characterized in that: The fixing plate of the pulley bracket is located on the inner side of the rod body and has an adjustment plate. The fixing plate is fixed to the rod body by multiple screws. The first transverse pulley plate and the second transverse pulley plate of the pulley bracket are fixed to the rod body by multiple screws at the ends away from the fixing plate.

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