Adjustable load seat for inspection of lifting appliance of crane

Abstract

The utility model relates to the technical field of crane sling inspection, in particular to an adjustable load seat for crane sling inspection, which comprises an external bracket, a sliding rail extending along the length direction of the external bracket is arranged in the middle of the bottom of the inner side of the external bracket, and sliding seats are slidably sleeved at the front end and the rear end of the outer side of the sliding rail. The load detection device comprises an external bracket, the tops of the left side and the right side of the external bracket are respectively provided with a fixed cross rod, the front end of each fixed cross rod is provided with a forward and reverse motor, and the output end of each forward and reverse motor penetrates through the interior of the corresponding fixed cross rod and is connected with a bidirectional screw rod. The balance weight can be adjusted according to the distance between the two sets of lifting hooks, synchronous adjustment can be achieved during lifting so that the lifting gravity center can be quickly found, center deviation is avoided, meanwhile, the balance weight is convenient to replace so as to meet inspection of lifting of different weights, the structure is simple, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to crane sling inspection technical field, concretely is a kind of adjustable crane sling inspection load seat. BACKGROUND

[0002] Crane sling is the device for lifting heavy objects in hoisting operation, sling is the most commonly used sling for lifting piece goods sling hook, sling, other still ring, hoist suction disc, clamp and fork, is widely used in hoisting industry, in engineering construction, engineering entity crane and construction crane sling need to be carried out load test before installation and use and change working condition, when crane sling load test, different safety working load crane sling needs to use corresponding weight counterweight as its test load.

[0003] The load of the existing crane sling inspection is all single and integral, which is relatively convenient for crane sling with only one group of hooks, but when it comes to crane sling with two groups of hooks, two groups of counterweights need to be hung on the hooks, which is not only inconvenient to operate, but also more importantly, the center of gravity cannot be grasped, so that the lifting center of gravity deviates during detection, thereby affecting the inspection structure and reducing safety.

[0004] Therefore, it is particularly important to design a load seat for crane sling inspection to change the above technical defects and improve the overall practicality. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a load seat for crane sling inspection to solve the problems in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The utility model provides a kind of adjustable crane sling inspection load seat, including outer bracket, the middle position of the inside bottom of outer bracket is provided with sliding rail extending along the length direction of outer bracket, the front and rear ends of the outside of sliding rail are slidably connected with slide, the top of the left and right sides of outer bracket is equipped with fixed crossbar, the front end of fixed crossbar is equipped with positive and negative motor, the output of positive and negative motor is connected with two-way screw rod, which is threaded into the outside of fixed crossbar, the outside of two-way screw rod is symmetrically threaded with screw rod sliding sleeve, one end of screw rod sliding sleeve extending to the inside of outer bracket is connected with mounting bracket, fixed base is arranged between two groups of mounting bracket of left and right same side, the top of fixed base is equipped with counterweight seat, the left and right sides of counterweight seat are all equipped with waist type sliding groove, the left and right sides of the inside of counterweight seat are all symmetrically equipped with limiting block, the inside of counterweight seat is placed with multiple groups of counterweight block distributed in layers, the left and right sides of counterweight block are all symmetrically equipped with limiting slot for being clamped with limiting block, the position of the left and right sides of counterweight block and corresponding waist type sliding groove are all equipped with internal thread hole, the inside of internal thread hole is connected with locking handle, the top center of counterweight block in the topmost part is equipped with lifting ring.

[0008] As the preferred scheme of the utility model, the back of the outer bracket is provided with a controller, wherein the controller is connected with the positive and negative motor through wires, and the connection mode is electrical connection.

[0009] As the preferred scheme of the utility model, the two ends of the two-way screw rod are rotatably connected in the inside of the fixed crossbar through bearing seat, and the two-way screw rod is spliced by two groups of screw rods with opposite threads.

[0010] As the preferred scheme of the utility model, the left and right sides of the outer bracket and the inside of the fixed crossbar are all provided with sliding grooves extending along the length direction of the fixed crossbar, and the connection mode between the sliding grooves and the screw rod sliding sleeves is sliding connection.

[0011] As the preferred scheme of the utility model, the bottom of the fixed base is connected with the top of the slide through bolts.

[0012] As the preferred scheme of the utility model, the counterweight seat and the counterweight block are designed in separable state.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] This utility model features an adjustable load seat for inspecting crane lifting devices. This load testing tool is specifically designed for crane lifting devices with two sets of hooks. The counterweight can be adjusted according to the distance between the two sets of hooks to quickly find the lifting center of gravity and avoid center deviation. At the same time, the counterweight is easy to replace to meet the inspection of lifting different weights. The structure is simple and easy to operate. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 This is a structural diagram of the external bracket of this utility model;

[0017] Figure 3 This is a structural diagram of the counterweight support of this utility model.

[0018] In the diagram: 1. External bracket; 101. Slide rail; 102. Slide block; 2. Fixed crossbar; 201. Forward and reverse motor; 202. Bidirectional screw; 203. Screw sleeve; 204. Mounting bracket; 205. Fixed base; 3. Counterweight support; 301. Waist-shaped slide groove; 302. Limiting block; 303. Counterweight block; 304. Limiting slot; 305. Internal threaded hole; 306. Locking handle; 307. Lifting ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] For examples, please refer to Figures 1-3 This utility model provides a technical solution:

[0024] An adjustable crane lifting load seat for inspection includes an outer bracket 1. A slide rail 101 extending along the length of the outer bracket 1 is provided at the middle position of the bottom inner side of the outer bracket 1. Slide seats 102 are slidably sleeved at both the front and rear ends of the outer side of the slide rail 101. Fixed crossbars 2 are installed on the top of both the left and right sides of the outer bracket 1. A forward and reverse motor 201 is installed at the front end of the fixed crossbar 2. The output end of the forward and reverse motor 201 passes through the interior of the fixed crossbar 2 and is connected to a bidirectional screw 202. Screw sleeves 203 are symmetrically threaded on the outer side of the bidirectional screw 202. One end of the screw sleeve 203 extending into the interior of the outer bracket 1 is connected to a mounting bracket 204. A fixed base 205 is provided between the two sets of mounting brackets 204 on the same side. A counterweight support 3 is installed on the top of the fixed base 205.

[0025] The outer bracket 1 has a controller on its back, which is connected to the forward and reverse motor 201 via a wire in an electrical manner. Both ends of the bidirectional screw 202 are rotatably connected to the inside of the fixed crossbar 2 via bearing seats. The bidirectional screw 202 is composed of two sets of screws with opposite threads, resulting in more stable and precise synchronous movement. Slide grooves extending along the length of the fixed crossbar 2 are provided on the left and right sides of the outer bracket 1 and the inner side of the fixed crossbar 2. The slide grooves are slidably connected to the screw sleeve 203. The bottom of the fixed base 205 is connected to the top of the slide block 102 by bolts. This ensures more stable movement.

[0026] In this embodiment, please refer to Figure 1 and Figure 3 The counterweight support 3 has waist-shaped grooves 301 on both the left and right sides. The counterweight support 3 has limit blocks 302 symmetrically arranged on both the left and right sides inside. The counterweight support 3 has multiple sets of stacked counterweight blocks 303 inside. The counterweight blocks 303 have limit slots 304 symmetrically arranged on both the left and right sides to engage with the limit blocks 302. The counterweight blocks 303 have internal threaded holes 305 on both the left and right sides and at the corresponding positions of the waist-shaped grooves 301. The internal threads of the internal threaded holes 305 are connected to locking handles 306. A lifting ring 307 is provided at the top center of the topmost counterweight block 303.

[0027] The counterweight support 3 and the counterweight block 303 are designed to be separable to meet the inspection requirements for lifting different weights. The structure is simple and easy to operate.

[0028] The working process of this utility model is as follows: In use, move the crane's lifting device to the middle position of the boom (a crane with a double lifting device typically has one set of lifting devices and two hooks). Then, hook the two sets of hooks into the corresponding lifting rings 307. Then, lift the crane for inspection. During the process, the counterweight can be adjusted according to the opening distance of the two sets of hooks. Start the forward and reverse motor 201 to drive the rotation of the bidirectional screw 202, thereby synchronously driving the two sets of screw sleeves 203 to move in the same or opposite directions. Synchronous movement is more stable and precise. With the cooperation of slide rail 101 and slide block 102, the counterweight support 3 is finally moved. In addition, the counterweight block 303 can be adjusted according to the inspection requirements. The corresponding number of counterweight blocks 303 are placed in the counterweight support 3, and the limit slot 304 is locked into the limit insert 302 for limit fixation. Then, the threaded end of the locking handle 306 is passed through the waist-shaped slide groove 301 and threadedly locked into the internal thread hole 305 on the counterweight block 303 for fixation, so as to meet the inspection of lifting different weights. The structure is simple and easy to operate.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable load seat for inspecting crane lifting devices, comprising an external bracket (1), characterized in that: A slide rail (101) extending along the length of the outer bracket (1) is provided at the middle position of the bottom inner side of the outer bracket (1). Slide seats (102) are slidably sleeved at both the front and rear ends of the slide rail (101). Fixed crossbars (2) are installed on the top of both the left and right sides of the outer bracket (1). A forward and reverse motor (201) is installed at the front end of the fixed crossbar (2). The output end of the forward and reverse motor (201) passes through the interior of the fixed crossbar (2) and is connected to a bidirectional screw (202). A screw sleeve (203) is symmetrically threaded on the outer side of the bidirectional screw (202). One end of the screw sleeve (203) extending into the interior of the outer bracket (1) is connected to a mounting bracket (204). A fixed base (204) is provided between the two sets of mounting brackets (204) on the same side. 5) A counterweight support (3) is installed on the top of the fixed base (205). The counterweight support (3) has waist-shaped grooves (301) on both the left and right sides. Limiting blocks (302) are symmetrically arranged on both the left and right sides inside the counterweight support (3). Multiple sets of stacked counterweight blocks (303) are placed inside the counterweight support (3). Limiting slots (304) that engage with the limiting blocks (302) are symmetrically arranged on both the left and right sides of the counterweight blocks (303). Internal threaded holes (305) are opened on both the left and right sides of the counterweight blocks (303) and at the positions corresponding to the waist-shaped grooves (301). Locking handles (306) are connected to the internal threads of the internal threaded holes (305). A lifting ring (307) is provided at the top center of the top of the topmost counterweight block (303).

2. The adjustable crane lifting device inspection load seat according to claim 1, characterized in that: The back of the external bracket (1) is provided with a controller, which is connected to the forward and reverse motor (201) by a wire and the connection is electrical.

3. The adjustable crane lifting device inspection load seat according to claim 1, characterized in that: Both ends of the bidirectional screw (202) are rotatably connected to the inside of the fixed crossbar (2) through bearing seats. The bidirectional screw (202) is composed of two sets of screws with opposite threads spliced ​​together.

4. The adjustable crane lifting device inspection load seat according to claim 1, characterized in that: The left and right sides of the external bracket (1) and the inner side of the fixed crossbar (2) are provided with sliding grooves extending along the length of the fixed crossbar (2), wherein the connection between the sliding groove and the screw sleeve (203) is a sliding connection.

5. The adjustable crane lifting device inspection load seat according to claim 1, characterized in that: The bottom of the fixed base (205) is connected to the top of the slide (102) by bolts.

6. The adjustable crane lifting device inspection load seat according to claim 1, characterized in that: The counterweight support (3) and the counterweight block (303) are designed to be separable.

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