Fixed cable guiding device of portal tower crane

Abstract

The utility model discloses a gate tower crane fixed cable guiding device which comprises a base structure, a connecting and installing mechanism is fixedly installed on the top of the base structure, a transverse cable guiding mechanism is fixedly installed on the top of the connecting and installing mechanism, and four sets of vertical cable guiding mechanisms are movably installed on the top of the connecting and installing mechanism. The transverse cable guiding mechanism comprises two sets of mounting blocks, displacement grooves are formed in the mounting blocks, first mounting rods are movably mounted in the mounting blocks, first sliding blocks are mounted at the two ends of each first mounting rod, and fixing rods are movably mounted in the first sliding blocks. A first spring is installed at the bottom of the first sliding block in an extruding mode, and the minimum bending radius of the cable is guaranteed while a fixing point is determined in the mode that the cable is clamped through a guide wheel arranged on the second installation rod and a guide wheel arranged on the first installation rod.

Description

Technical Field

[0001] The utility model relates to the technical field of guide devices, in particular to a fixed cable guide device for a portal tower crane. Background Art

[0002] There are many gantry cranes and tower cranes in operation in the hydropower station. The power supply cables outside these gantry cranes are usually arranged in the middle of the track. This arrangement is widely used because it helps to reduce the length of the cable. In actual operation, equipment units usually use safety ropes to tie and fix the power supply cables in the middle of the track. Although this method is simple, it has great safety hazards. Because the traveling mechanism of the gantry crane is used frequently, the power supply cable is repeatedly bent around the fixed point during this process. If the bending radius is too small, it is easy to cause damage to the outer skin and inner core of the cable at the fixed point. If it is not discovered in time, cable short circuit or grounding faults will occur, affecting the safe operation of the equipment.

[0003] The patent with the patent announcement number CN208142803U relates to a fixed cable guide device for a portal tower crane, including a fixed bottom plate, a cable clamp, a guide cylinder and a bracket. The fixed bottom plate is fixed to the ground by expansion bolts; the cable clamp is composed of an upper arc plate and two lower arc plates, the lower arc plate is welded to the fixed bottom plate, and the upper arc plate is bolted to the two lower arc plates; the cable guide cylinder is installed on the fixed bottom plate through a bracket and is located on one side of the cable clamp. The utility model provides a fixed cable guide device for a portal tower crane, which can ensure the minimum bending radius of the power supply cable, effectively prevent the power supply cable from being damaged during repeated bending, and has the advantages of simple overall structure, convenient installation, high reliability, etc.

[0004] In the above patent, a cable clamp is set on the fixed base plate to determine the fixed point, and a guide cylinder is set at the other end to ensure the minimum bending radius of the power supply cable. However, the cable clamp and the guide cylinder are fixedly installed on the base plate without any movable space. When the bent cable is over-stretched, the fixed clamp and guide cylinder will restrain the cable and cause damage to the cable. Utility Model Content

[0005] The utility model aims to provide a fixed cable guide device for a gantry crane, which has the advantages of movable fixing points and guide rods to prevent cable damage, and solves the problem that after a bent cable is over-stretched, the fixed clamp and guide cylinder will restrain the cable and cause damage to the cable.

[0006] To achieve the above object, the utility model provides the following technical solution: a fixed cable guide device for a portal tower crane, comprising a base structure, a connection and installation mechanism is fixedly installed on the top of the base structure, a horizontal cable guide mechanism is fixedly installed on the top of the connection and installation mechanism, and four groups of vertical cable guide mechanisms are movably installed on the top of the connection and installation mechanism;

[0007] The transverse cable guiding mechanism comprises a mounting block, and the mounting blocks are provided with two groups, a displacement groove is opened inside the mounting block, and a first mounting rod is movably installed inside the displacement groove, first sliders are respectively installed at both ends of the first mounting rod, and a fixing rod is movably installed inside the first slider, a first spring is provided at the bottom of the first slider, and the first spring is movably installed on the outer wall of the fixing rod, the mounting block and the fixing rod are fixedly installed on the top of the connecting mounting mechanism, and a second mounting rod is fixedly installed on the top of the mounting block, and the outer walls of the second mounting rod and the first mounting rod are both connected with guide wheels with bearings.

[0008] As a preferred embodiment of the fixed cable guide device for a portal tower crane of the utility model, an outer wall of the guide wheel is provided with an arc-shaped groove, and two sets of guide wheels are located on the same vertical line.

[0009] As a preferred fixed cable guide device for a gantry crane of the utility model, the connecting and installing mechanism includes a connecting plate, and four groups of slide grooves are opened on the top of the connecting plate, positioning strips are fixedly installed inside the slide grooves, and the arc ends of every two groups of positioning strips are symmetrically opened along the bottom center axis of the transverse cable guide mechanism, and positioning holes are opened at the four corners of the connecting plate.

[0010] As a preferred fixed cable guide device for a gantry crane of the utility model, the vertical cable guide mechanism includes a second slider, and a positioning groove is provided on the outer side of the second slider, one side of the second slider is extruded and installed on one side of the second spring, and a fixed column is fixedly installed on the top of the second slider, and a guide roller is rotatably installed on the outer wall of the fixed column.

[0011] As a preferred embodiment of the fixed cable guide device for a portal tower crane of the utility model, the second spring is extruded and installed at one end of the slide slot, and the positioning groove is movably installed on the outer wall of the positioning strip.

[0012] As a preferred embodiment of the fixed cable guide device for a gantry crane of the utility model, a first rubber sleeve is fixedly installed on the outer wall of the guide wheel, and a second rubber sleeve is fixedly installed on the outer wall of the guide roller.

[0013] As a preferred embodiment of the fixed cable guide device for a portal tower crane of the utility model, the base structure includes a mounting plate, and two groups of positioning grooves are provided inside the mounting plate, and the two groups of positioning grooves are parallel.

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

[0015] 1. The utility model fixes the device on a suitable surface through a base structure, and at the same time, the cable is clamped by the guide wheel arranged on the second mounting rod and the guide wheel arranged on the first mounting rod, so as to determine the fixing point and ensure the minimum bending radius of the cable. When the cable is displaced, the guide wheel will rotate on the outer wall of the ball bearing to reduce the friction force when the cable is displaced. When the bent cable is over-stretched and the downward force generated by squeezing the guide wheel reaches the pressure value of the first spring, the first spring is deformed to make the first mounting rod displace inside the displacement groove, and then the guide wheel arranged on the first mounting rod is displaced, thereby changing the fixing point of the cable and the bending angle of the cable at the fixing point, providing the cable with as much activity space as possible to prevent damage. At the same time, the space between the two sets of guide wheels can be flexibly changed by squeezing the displaced guide wheel, so that the two sets of guide wheels can fix cables of various diameters.

[0016] 2. The utility model fixes the second slider in the slide groove for displacement through the positioning bar, and then squeezes the second slider and the flat end of the slide groove through the second spring, so that the two sets of guide rollers are squeezed toward the bottom center axis of the horizontal cable guide mechanism, and the cable is squeezed on the center axis of the horizontal cable guide mechanism, ensuring that the axial direction of the cable is consistent with the center axis of the horizontal cable guide mechanism at normal times, and cooperates with the rotatable guide roller to improve the smoothness of the cable when passing through the horizontal cable guide mechanism. At the same time, the vertical cable guide mechanism can also squeeze the second spring to produce displacement when it is subjected to excessive pressure, thereby preventing damage to equipment and cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a structural diagram of the connection and installation mechanism of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the transverse cable guide mechanism in the utility model;

[0020] Figure 4 For this utility model Figure 3 The enlarged view of point A in the middle;

[0021] Figure 5 It is a structural schematic diagram of the vertical cable guiding mechanism of the utility model.

[0022] In the figure: 1. base structure; 101. mounting plate; 102. positioning groove; 2. connecting and mounting mechanism; 201. connecting plate; 202. positioning hole; 203. slide groove; 204. positioning strip; 3. horizontal cable guiding mechanism; 301. mounting block; 302. displacement groove; 303. first mounting rod; 304. first slider; 305. fixing rod; 306. first spring; 307. second mounting rod; 308. guide wheel; 309. first rubber sleeve; 4. vertical cable guiding mechanism; 401. second slider; 402. positioning groove; 403. second spring; 404. fixing column; 405. guide roller; 406. second rubber sleeve. DETAILED DESCRIPTION

[0023] See also Figure 1-5 A fixed cable guide device for a gantry crane comprises a base structure 1, a connecting and mounting mechanism 2 is fixedly mounted on the top of the base structure 1, a horizontal cable guide mechanism 3 is fixedly mounted on the top of the connecting and mounting mechanism 2, and four sets of vertical cable guide mechanisms 4 are movably mounted on the top of the connecting and mounting mechanism 2;

[0024] The transverse cable guide mechanism 3 includes a mounting block 301, and the mounting block 301 is provided with two groups. A displacement groove 302 is opened inside the mounting block 301, and a first mounting rod 303 is movably installed inside the displacement groove 302. First sliders 304 are respectively installed at both ends of the first mounting rod 303, and a fixed rod 305 is movably installed inside the first slider 304. A first spring 306 is provided at the bottom of the first slider 304, and the first spring 306 is movably installed on the outer wall of the fixed rod 305. The mounting block 301 and the fixed rod 305 are fixedly installed on the top of the connecting mounting mechanism 2, and a second mounting rod 307 is fixedly installed on the top of the mounting block 301, and the outer walls of the second mounting rod 307 and the first mounting rod 303 are both bearing-connected with guide wheels 308;

[0025] During use, the device is fixed on a suitable surface through the base structure 1, and the cable is clamped by the guide wheel 308 arranged on the second mounting rod 307 and the guide wheel 308 arranged on the first mounting rod 303 to determine the fixing point and ensure the minimum bending radius of the cable. When the cable is displaced, the guide wheel 308 will rotate on the outer wall of the ball bearing 308 to reduce the friction when the cable is displaced. When the bent cable is over-stretched and squeezes the guide wheel 308 to generate a downward force that reaches the pressure value of the first spring 306, the first spring 306 is deformed to cause the first mounting rod 303 to displace inside the displacement groove 302, thereby causing the guide wheel 308 arranged on the first mounting rod 303 to displace, thereby changing the fixing point of the cable and the bending angle of the cable at the fixing point, providing as much activity space as possible for the cable to prevent damage. At the same time, the space between the two sets of guide wheels 308 can be flexibly changed by squeezing the displaced guide wheel 308, so that the two sets of guide wheels 308 can fix cables of various diameters.

[0026] Furthermore, an arc-shaped groove is formed on the outer wall of the guide wheel 308, and the two sets of guide wheels 308 are on the same vertical line;

[0027] By providing an arc-shaped groove on the outer wall of the guide wheel 308 , the guide wheel 308 can fit more closely to the outer wall of the cable, thereby increasing the contact area and reducing the pressure of the first spring 306 on the cable surface.

[0028] Furthermore, the connecting and installing mechanism 2 includes a connecting plate 201, and four groups of slide grooves 203 are opened on the top of the connecting plate 201, and positioning strips 204 are fixedly installed inside the slide grooves 203, and the arc ends of every two groups of positioning strips 204 are symmetrically opened along the bottom center axis of the transverse cable guide mechanism 3, and positioning holes 202 are opened at the four corners of the connecting plate 201.

[0029] Furthermore, the vertical cable guiding mechanism 4 includes a second slider 401, and a positioning groove 402 is opened on the outer side of the second slider 401, one side of the second slider 401 is squeezed and installed on one side of the second spring 403, and a fixing column 404 is fixedly installed on the top of the second slider 401, and a guide roller 405 is rotatably installed on the outer wall of the fixing column 404.

[0030] Further, the second spring 403 is pressed and installed at one end of the slide slot 203, and the positioning groove 402 is movably installed on the outer wall of the positioning strip 204;

[0031] During use, the second slider 401 is fixed in the slide groove 203 and displaced by the positioning bar 204, and then the second slider 401 and the flat end of the slide groove 203 are squeezed by the second spring 403, so that the two sets of guide rollers 405 are squeezed toward the bottom center axis of the horizontal cable guide mechanism 3, and the cable is squeezed on the center axis of the horizontal cable guide mechanism 3, ensuring that the axial direction of the cable is consistent with the center axis of the horizontal cable guide mechanism 3 at normal times, and cooperating with the rotatable guide roller 405 to improve the smoothness of the cable when passing through the horizontal cable guide mechanism 3. At the same time, the vertical cable guide mechanism 4 can also squeeze the second spring 403 to cause displacement when it is subjected to excessive pressure to prevent damage to equipment and cables.

[0032] Furthermore, a first rubber sleeve 309 is fixedly mounted on the outer wall of the guide wheel 308, and a second rubber sleeve 406 is fixedly mounted on the outer wall of the guide roller 405;

[0033] A buffer layer is added between the cable and the guide wheel 308 and the guide roller 405 by the first rubber sleeve 309 and the second rubber sleeve 406, so as to reduce the wear of the guide wheel 308 and the guide roller 405 on the cable.

[0034] Furthermore, the base structure 1 includes a mounting plate 101, and two sets of positioning grooves 102 are formed inside the mounting plate 101, and the two sets of positioning grooves 102 are parallel;

[0035] During use, the device can be installed on a flat installation hole by passing a nut through any position in the two sets of positioning grooves 102, thereby reducing the requirements for the position of the installation hole and improving the convenience of installation.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixed cable guide device for a portal tower crane, comprising a base structure (1), characterized in that: A connecting and mounting mechanism (2) is fixedly mounted on the top of the base structure (1), and a transverse cable guiding mechanism (3) is fixedly mounted on the top of the connecting and mounting mechanism (2), and four groups of vertical cable guiding mechanisms (4) are movably mounted on the top of the connecting and mounting mechanism (2); The transverse cable guide mechanism (3) comprises a mounting block (301), and the mounting block (301) is provided with two groups. A displacement groove (302) is provided inside the mounting block (301), and a first mounting rod (303) is movably installed inside the displacement groove (302). First sliders (304) are respectively installed at both ends of the first mounting rod (303), and a fixed rod (305) is movably installed inside the first slider (304). A first spring (306) is provided at the bottom of the first slider (304), and the first spring (306) is movably installed on the outer wall of the fixed rod (305). The mounting block (301) and the fixed rod (305) are fixedly installed on the top of the connecting mounting mechanism (2), and a second mounting rod (307) is fixedly installed on the top of the mounting block (301), and the outer walls of the second mounting rod (307) and the first mounting rod (303) are both bearing-connected with guide wheels (308).

2. A fixed cable guide device for a portal tower crane according to claim 1, characterized in that: The outer wall of the guide wheel (308) is provided with an arc-shaped groove, and the two groups of guide wheels (308) are located on the same vertical line.

3. A fixed cable guide device for a portal tower crane according to claim 1, characterized in that: The connection installation mechanism (2) comprises a connection plate (201), and four groups of slide grooves (203) are provided on the top of the connection plate (201), positioning strips (204) are fixedly installed inside the slide grooves (203), and the arc ends of every two groups of positioning strips (204) are symmetrically opened along the bottom central axis of the transverse cable guide mechanism (3), and positioning holes (202) are provided at the four corners of the connection plate (201).

4. The fixed cable guide device for a portal tower crane according to claim 1, characterized in that: The vertical cable guide mechanism (4) comprises a second slider (401), and a positioning groove (402) is provided on the outer side of the second slider (401), one side of the second slider (401) is pressed and installed on one side of a second spring (403), and a fixing column (404) is fixedly installed on the top of the second slider (401), and a guide roller (405) is rotatably installed on the outer wall of the fixing column (404).

5. A fixed cable guide device for a portal tower crane according to claim 4, characterized in that: The second spring (403) is extruded and installed on one end of the slide groove (203), and the positioning groove (402) is movably installed on the outer wall of the positioning strip (204).

6. A fixed cable guide device for a portal tower crane according to claim 1, characterized in that: A first rubber sleeve (309) is fixedly mounted on the outer wall of the guide wheel (308), and a second rubber sleeve (406) is fixedly mounted on the outer wall of the guide roller (405).

7. The fixed cable guide device for a portal tower crane according to claim 1, characterized in that: The base structure (1) comprises a mounting plate (101), and two groups of positioning grooves (102) are provided inside the mounting plate (101), and the two groups of positioning grooves (102) are parallel to each other.

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