A cable disc brake device with a hydraulic jack structure

Abstract

The present invention discloses a cable drum brake device with a hydraulic jack structure. The cable drum brake device includes a lower frame, a middle frame and an upper frame; M hydraulic jacks are installed in the lower frame, and M is an integer greater than or equal to 4; the top of each hydraulic jack is respectively connected to the middle frame and drives the middle frame to move up and down; a number of spring buffer mechanisms are installed between the middle frame and the upper frame; an arc-shaped recess adapted to the edge of the cable drum is provided in the middle position of the top of the upper frame; a brake belt is installed on the top surface of the upper frame. The present invention adopts structures such as hydraulic jacks, spring buffer mechanisms, and brake belts to achieve frictional contact between the brake device and the edge of the cable drum, thereby achieving braking of the cable drum. The present invention has high safety, is simple and convenient to operate, and has a good braking effect.

Description

Technical Field

[0001] The invention belongs to the technical field of cable laying and conductor laying, and in particular relates to a cable drum braking device with a hydraulic jack structure. Background Art

[0002] High-voltage cable reels and overhead conductor reels of 35kV and above voltage levels are heavy and large in size, so they often require traction machines, capstans, conveyors and other power devices for traction and transportation during cable laying. Since the cables themselves have the characteristics of bending resistance and large inertia, the cable reels (high-voltage cable reels and overhead conductor reels, etc.) will have uneven speeds, loose reels and wires, and friction on the ground when they rotate, which will cause the outer sheath of the cable or the wire to wear. In some cases, the cable needs to be repaired, and in some cases, the entire reel needs to be replaced, resulting in large economic and time costs.

[0003] In order to overcome this problem, manual braking is currently often used. That is, during the cable laying process, the two sides of the cable drum are manually adjusted using objects such as wooden sticks or steel pipes to manually adjust the braking force, thereby controlling the cable drum rotation speed and achieving braking. However, the manual braking method has the following problems: First, the safety factor is small, and the braking force during the braking process is uneven. When the braking force is too large, it is easy to cause the risk of wooden sticks or steel pipes breaking and slipping, causing personnel to become unstable and shake, and the cable drum rotation is out of control; second, the labor cost is high, and two people are required to operate the entire line laying process; third, the braking difficulty is high, and the braking operator needs to adjust the braking force at any time according to the traction and conveying speed to ensure the uniform rotation of the cable drum. It can be seen that there is an urgent need to propose a cable drum braking device to solve the above-mentioned technical problems existing in the prior art. Summary of the invention

[0004] The purpose of the present invention is to provide a cable drum brake device with a hydraulic jack structure to replace manual braking of the cable drum. In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A cable drum brake device with a hydraulic jack structure, comprising:

[0006] The lower frame, the middle frame and the upper frame; among which:

[0007] M hydraulic jacks are installed in the lower frame, where M is an integer greater than or equal to 4;

[0008] The tops of the hydraulic jacks are connected to the middle frame and drive the middle frame to move up and down;

[0009] A plurality of spring buffer mechanisms are installed between the middle frame and the upper frame;

[0010] An arc-shaped recess adapted to the edge of the cable drum is provided at the top middle position of the upper frame;

[0011] A brake band is mounted on the top surface of the upper frame.

[0012] Preferably, the lower frame, the middle frame and the upper frame are all square frames and are made of steel plates.

[0013] Preferably, there are four hydraulic jacks; the bottom of each hydraulic jack is mounted on the bottom of the lower frame by bolts, and the top of each hydraulic jack is mounted on the top of the middle frame by bolts.

[0014] Preferably, the number of the spring buffer mechanisms is four;

[0015] Each spring buffer mechanism includes a limit bolt, a compression spring and a mounting nut;

[0016] Wherein, the top of the limit bolt is installed on the top of the upper frame;

[0017] A through hole is provided at the bottom of the upper frame;

[0018] The compression spring sleeve is placed on the limit bolt, and both the compression spring and the limit bolt pass downward through the through hole;

[0019] The middle frame is provided with mounting holes;

[0020] The lower end of the limit bolt passes through the mounting hole and is fastened by the mounting nut.

[0021] Preferably, a plurality of threaded steel bars arranged in the same direction are installed on the bottom lower surface of the lower frame.

[0022] Preferably, reinforcing ribs are installed on the top lower surface of the intermediate frame.

[0023] Preferably, a limiting groove adapted to the side shape of the middle frame is provided on the upper portion of the lower frame, the middle frame is located in the limiting groove, and can move up and down along the limiting groove driven by the hydraulic jack.

[0024] Preferably, a limiting frame adapted to the side shape of the upper frame is installed on the top of the middle frame, the upper frame is located inside the limiting frame, and can move up and down along the inner side of the limiting frame under the action of the spring buffer mechanism.

[0025] The present invention has the following advantages:

[0026] As described above, the present invention provides a cable drum brake device, which adopts a hydraulic jack, a spring buffer mechanism, a brake belt and other structures to achieve frictional contact between the brake device and the edge of the cable drum, thereby achieving braking of the cable drum. Compared with the manual braking method in the prior art, the present invention has significantly improved safety, is simple and convenient to operate, and has a good braking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of the cable drum brake device in an embodiment of the present invention (front view).

[0028] Figure 2 Schematic diagram (side view) of the structure of the cable drum brake device in an embodiment of the present invention.

[0029] Figure 3 It is a structural schematic diagram (front view) of the lower frame in an embodiment of the present invention.

[0030] Figure 4 It is a structural schematic diagram (side view) of the lower frame in an embodiment of the present invention.

[0031] Figure 5 It is a structural schematic diagram (front view) of the middle layer frame in an embodiment of the present invention.

[0032] Figure 6 It is a structural schematic diagram (side view) of the middle frame in an embodiment of the present invention.

[0033] Figure 7 It is a structural schematic diagram (front view) of the upper frame in an embodiment of the present invention.

[0034] Figure 8 It is a structural schematic diagram (side view) of the upper frame in an embodiment of the present invention.

[0035] Fig. 9 1 is a diagram showing the use status of the cable drum brake device in an embodiment of the present invention.

[0036] Among them, 1-lower frame, 2-middle frame, 3-upper frame, 4-hydraulic jack, 5-limiting groove, 6-reinforcement rib, 7-reinforcement rib, 8-spring buffer mechanism, 9-limiting bolt, 10-compression spring;

[0037] 11-mounting nut, 12-through hole, 13-mounting hole, 14-limiting frame, 15-arc-shaped recess, 16-brake band, 17-threaded steel bar, 18-braking device, 19-cable drum, 20-round disk, 21-fixing plate, 22-fixing hole. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0039] Combination Figure 1 and Figure 2 As shown, the cable drum braking device includes a lower frame 1, a middle frame 2 and an upper frame 3.

[0040] Among them, the above three-layer frames are all made of steel plates to improve the structural strength of the braking device.

[0041] In this embodiment, the lower frame 1, the middle frame 2 and the upper frame 3 are preferably all square frames.

[0042] like Figure 3 and Figure 4 As shown, four hydraulic jacks 4 are installed in the lower frame 1. The hydraulic jacks 4 are preferably electric hydraulic jacks, and manual hydraulic jacks can also be used.

[0043] Each hydraulic jack 4 is installed at a corner position in the lower frame 1 to ensure uniform lifting.

[0044] Of course, the number of hydraulic jacks is not limited to the above four, and can be greater than four, for example:

[0045] The number of the hydraulic jacks 4 can also be six, that is, on the basis of the above four hydraulic jacks 4, two hydraulic jacks (not shown) are added and located in the middle of the long side of the bottom of the lower frame 1.

[0046] Take one of the hydraulic jacks as an example:

[0047] A hydraulic jack fixing seat (not shown) is provided at the bottom of the lower frame 1, and the fixing seat is mounted on the bottom of the lower frame 1 by bolts, and the bottom of the hydraulic jack is mounted on the hydraulic jack fixing seat by bolts.

[0048] The top of the hydraulic jack 4 is installed on the middle frame 2 and is used to drive the middle frame to move up and down. Specifically, the top of the hydraulic jack 4 is installed on the top (lower surface) of the middle frame 2 by bolts.

[0049] When the hydraulic jack 4 is activated, the middle frame 2 is driven to move upward or downward.

[0050] In addition, in order to ensure the directionality of the up and down movement of the middle frame 2 and prevent it from shaking left and right, the following designs are also made:

[0051] A limiting groove 5 is provided on the upper portion of the lower frame 1. The limiting groove 5 has a shape adapted to the side of the middle frame 2. In this embodiment, the middle frame 2 is square, so the limiting groove 5 can also be square.

[0052] Of course, the middle frame 2 and the limiting groove 5 may also be in other shapes, which will not be described in detail here.

[0053] The middle frame 2 is located in the limiting groove 5 and can move up and down along the limiting groove 5 driven by the hydraulic jack 4 .

[0054] The limiting groove 5 in this embodiment can be formed simultaneously when the lower frame 1 is processed.

[0055] In addition, in order to ensure the synchronization of the lifting of the above multiple hydraulic jacks 4, the present embodiment also carries out the following design:

[0056] The plurality of hydraulic jacks 4 are all electric hydraulic jacks, and each hydraulic jack 4 is a synchronous electric hydraulic jack. The electric hydraulic pump is connected to each hydraulic jack 4 through a diverter valve and a corresponding hydraulic pipeline.

[0057] The above design ensures the synchronization of the hydraulic jacks 4 when lifting the middle frame 2, thereby ensuring the uniform braking effect (uniform braking force) of the cable drum brake device on the edge of the cable drum, and the braking effect is good.

[0058] In addition, in order to improve the structural strength of the lower frame 1, the top of each side plate of the lower frame 1 is bent to form a reinforcing rib 6, such as Figure 4 When the middle frame 2 moves up and down, even if the uneven edge of the cable drum generates a lateral squeezing force on the lower frame 1, the lower frame 1 will not be deformed.

[0059] like Figure 5 and Figure 6 As shown, since the top of the hydraulic jack 4 is installed on the top of the middle frame 2 by bolts, in order to improve the compressive strength of the top of the middle frame 2, a reinforcing rib 7 is installed on the lower surface of the top of the intermediate frame.

[0060] The reinforcing rib 7 can be made of C-shaped steel, and the reinforcing rib 7 is welded to the top lower surface of the middle frame 2 .

[0061] like Figure 1 and Figure 2 As shown, four spring buffer mechanisms 8 are installed between the middle frame 2 and the upper frame 3 , and each spring buffer mechanism is located at a corresponding corner position of the middle frame 2 and the upper frame 3 .

[0062] The purpose of providing the spring buffer mechanism 8 is to ensure good contact between the braking device in this embodiment and the edge of the cable drum when the edge of the cable drum is uneven, thereby achieving the purpose of fine adjustment and ensuring the braking effect.

[0063] The automatic expansion and contraction of the spring ensures that the brake belt 16 described below is always in friction with the edge of the cable drum, and ensures that the friction force can prevent the cable drum from unraveling; when traction stops, the friction force can quickly brake the cable drum.

[0064] Take one of the spring buffer mechanisms 8 as an example for explanation:

[0065] like Figure 7 and Figure 8 As shown, each spring buffer mechanism 8 includes a limiting bolt 9, a compression spring 10 and a mounting nut 11.

[0066] The top of the limiting bolt 9 (welded or bolted) is installed on the top (lower surface) of the upper frame 3.

[0067] A through hole 12 is provided at the bottom of the upper frame 3 .

[0068] The compression spring 10 is sleeved on the limiting bolt 9 , and both the compression spring 10 and the limiting bolt 9 pass downward through the through hole 12 .

[0069] The bottom of the compression spring 10 is pressed against the top upper surface of the middle frame 2 (in a compressed state). Figure 1 shown.

[0070] The middle frame 2 is provided with mounting holes 13, such as Figure 5 and Figure 6 shown.

[0071] The lower end of the limiting bolt 9 passes through the mounting hole 13 and is fastened by the mounting nut 11 .

[0072] The above-mentioned design of the spring buffer mechanism 8 can ensure that the upper frame 3 can slide up and down relative to the middle frame 2 .

[0073] In addition, in order to ensure the directionality of the up and down movement of the upper frame 3 , a limit frame 14 may be installed on the top of the middle frame 2 . The limit frame 14 has a shape that is adapted to the side of the upper frame 3 .

[0074] For example, the side of the upper frame 3 in this embodiment is square, so the limiting frame 14 is also square. Of course, the side of the upper frame 3 and the limiting frame 14 are not limited to the above square, which will not be repeated here.

[0075] The limiting frame 14 is preferably made of a steel plate, and is mounted on the upper frame 3 by welding. The upper frame 3 is located inside the limiting frame 14, and moves up and down along the inner side of the limiting frame 14 under the action of the spring buffer mechanism 8.

[0076] like Figure 1As shown, an arc-shaped recess 15 adapted to the edge of the cable drum is provided in the middle of the top of the upper frame 3 .

[0077] The width of the arc-shaped recess 15 should be greater than the edge width of the cable drum. In addition, the curvature design of the arc-shaped recess 15 should ensure that the braking device (arc-shaped recess 15) in this embodiment has as large a contact area as possible with the edge of the cable drum.

[0078] In addition, a brake band 16, such as an asbestos brake band, is installed on the top surface of the upper frame 3. The asbestos brake band is closely attached to the top surface of the upper frame and can be bonded with an adhesive to ensure the durability of the brake device in this embodiment.

[0079] Of course, in order to ensure the stability of the cable drum brake device in this embodiment, a plurality of threaded steel bars arranged in the same direction, such as threaded steel bar 17, are also installed (by welding) on ​​the bottom surface of the lower frame 1.

[0080] like Figure 1 As shown, the arrangement direction of the threaded steel bar 17 is consistent with (parallel to) the axial direction of the cable drum. Fig. 9 The existence of the threaded steel bar 17 ensures that the brake device 18 will not slide during use.

[0081] In addition, in order to further increase the stability of the cable drum brake device when in use, a plurality of fixing plates, such as a fixing plate 21 , may be welded at the bottom of the lower frame 1 , and each fixing plate 21 is provided with a fixing hole 22 .

[0082] After the cable drum brake device is placed in place, a fixing pin (not shown) is passed through each fixing hole 22 and inserted downward into the ground, which can effectively prevent the cable drum brake device from sliding during use.

[0083] The number of the fixing plates is, for example, four, that is, a fixing plate 21 is welded at each corner position of the lower frame 1 .

[0084] The material of each fixing plate 21 is the same as that of the above three-layer frame, that is, it is made of steel plate.

[0085] like Fig. 9 As shown, the general use process of the cable drum brake device in this embodiment is as follows:

[0086] A brake device 18 in this embodiment is placed below the edge of each disc 20 of the cable drum 19. The arrangement direction of the threaded steel bar 17 is parallel to the axis of the cable drum to ensure that the brake device 18 will not slide during the braking process.

[0087] In addition, the design of the arc-shaped recess 15 ensures a good contact effect between the cable drum brake device and the edge of the disk 20 .

[0088] Then, the synchronous lifting speed of each hydraulic jack 4 is controlled so that the brake band 16 has good contact with the edge of the disc 20 . At this time, the brake device 18 provides an initial braking force to the cable drum 19 .

[0089] Start the traction machine and other equipment, and when the cable is being transported smoothly:

[0090] If the cable conveying speed is relatively fast (can be checked manually), each hydraulic jack 4 is further controlled to continue lifting, so as to ensure that the brake device 18 in this embodiment provides the cable drum 19 with appropriate friction force;

[0091] If the cable conveying speed is relatively slow, the traction speed of the traction machine can be appropriately increased to ensure a suitable cable release speed.

[0092] During the cable conveying process, the problem of poor contact between the edge of the disc 20 and the brake device 18 caused by the uneven edge of the disc 20 can be adaptively adjusted by the spring buffer mechanism 8 .

[0093] After the cable is released, the traction machine and other equipment are turned off. Due to the presence of the braking device 18 in this embodiment, the cable drum 19 can be automatically decelerated and completely braked without manual intervention for braking.

[0094] The braking device 18 in this embodiment satisfies the requirements of cable laying and overhead line laying very well.

[0095] Of course, the above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments. It should be noted that all equivalent substitutions and obvious deformation forms made by any technician familiar with the field under the guidance of this specification fall within the essential scope of this specification and should be protected by the present invention.

Claims

1. A cable drum brake device with a hydraulic jack structure, characterized in that: include: The lower frame, the middle frame and the upper frame; among which: M hydraulic jacks are installed in the lower frame, where M is an integer greater than or equal to 4; The tops of the hydraulic jacks are respectively connected to the middle frame and drive the middle frame to move up and down; A plurality of spring buffer mechanisms are installed between the middle frame and the upper frame; An arc-shaped recess adapted to the edge of the cable drum is provided at the top middle position of the upper frame; A brake band is mounted on the top surface of the upper frame; The upper part of the lower frame is provided with a limiting groove adapted to the side shape of the middle frame, the middle frame is located in the limiting groove, and can move up and down along the limiting groove driven by the hydraulic jack; A limiting frame adapted to the side shape of the upper frame is installed on the top of the middle frame, the upper frame is located inside the limiting frame, and can move up and down along the inner side of the limiting frame under the action of the spring buffer mechanism; The hydraulic jack is a synchronous electric hydraulic jack, and the electric hydraulic pump is connected to each hydraulic jack through a diverter valve and corresponding hydraulic pipelines to ensure the synchronization of each hydraulic jack when lifting the middle frame; Each spring buffer mechanism includes a limit bolt, a compression spring and a mounting nut; Wherein, the top of the limit bolt is installed on the top of the upper frame; A through hole is provided at the bottom of the upper frame; The compression spring sleeve is placed on the limit bolt, and both the compression spring and the limit bolt pass downward through the through hole; The middle frame is provided with mounting holes; The lower end of the limiting bolt passes through the mounting hole and is fastened by the mounting nut.

2. The cable drum brake device according to claim 1, characterized in that: The lower frame, the middle frame and the upper frame are all square frames and are all made of steel plates.

3. The cable drum brake device according to claim 1 or 2, characterized in that: There are four hydraulic jacks; the bottom of each hydraulic jack is installed on the bottom of the lower frame through bolts, and the top of each hydraulic jack is installed on the top of the middle frame through bolts.

4. The cable drum brake device according to claim 1, characterized in that: A plurality of threaded steel bars arranged in the same direction are installed on the bottom lower surface of the lower frame.

5. The cable drum brake device according to claim 1, characterized in that: A reinforcing rib is installed on the top lower surface of the intermediate frame.

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