Underground pipe gallery power support

Abstract

The present invention relates to the technical field of pipeline transportation devices, in particular to underground pipe gallery power supports, which overcome the problems of unreliable locking and large space occupied by existing supports. The present invention comprises a base fixed on the pipe gallery wall and a cross arm extending from the base to support electric wires, the rear end of the cross arm is inserted into a U-shaped opening of the base and is hinged by a first core shaft, and also comprises a positioning locking structure for locking the cross arm after swinging it to different angles on the base, an adjustable support rod is provided between the base and the cross arm, one end of the adjustable support rod is hinged on the base, and the other end is upwardly pressed against the cross arm through a second core shaft, the cross-sectional profile of the cross arm is a rectangle with an opening on the bottom edge, the two ends of the second core shaft are respectively positioned in positioning holes on the two side walls of the cross arm, the positioning holes are at least two groups that penetrate the two side walls of the cross arm and are spaced front and back, the front and rear positioning holes on the side walls of the cross arm are connected by a slide groove below, so that the second core shaft can move from one group of positioning holes to another group of positioning holes through the slide groove, and the length of the adjustable support rod is adjustable.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline conveying devices, in particular to an electric power support for supporting electric wires in an underground pipe gallery. Background Art

[0002] In cities, power lines, telecommunication lines, municipal water supply and gas pipelines are generally transported underground. These pipelines are uniformly set up in underground pipe corridors, which are often circular-section passages formed by tunneling shield machines. These pipelines are supported on the walls of the pipe corridors by various brackets or directly set at the bottom of the pipe corridors. Among them, power lines are special. Since they transmit high-voltage electricity, their facilities must be sufficiently safe and reliable. The wires are supported by brackets and set on the walls of the pipe corridors.

[0003] The bracket supporting the electric wires has a base fixed on the pipe gallery wall and a cross arm extending from the base in structure according to the use requirements. The electric wires are laid on the cross arms of the arranged brackets. In order to ensure the uniform swing angle of the cross arms, that is, the angle between each extended cross arm and the horizontal plane is consistent, the fixed connection between the cross arm and the base has been changed to a hinged form with adjustable angle. Figure 1 The base 1' is fixed on the pipe gallery wall, the rear end of the cross arm 2' is hinged on the base 1', and a fastening bolt 3' is arranged at the hinged part. The disadvantages of the power support of this structure are: first, the locking effect is poor, the locking part only relies on the friction force of the contact surface of the base 1' and the cross arm 2', and the locking is not firm. In addition, in some cases, when only one long fastening bolt 3' is used, the base 1' and the cross arm 2' at the locking part do not have sufficient rigidity, resulting in difficulty in controlling the tightening torque of the fastening bolt 3'. Even if the base 1' and the cross arm 2' are deformed after tightening, the ideal locking effect cannot be achieved; second, the processing difficulty of the cross arm 2' is large, because the hinged locking structure at the rear end and the folded edge support structure at the front end to improve the rigidity are quite different, and it is necessary to pass It requires a lot of processing methods to complete, and the parts manufacturing process is relatively cumbersome. Third, the hinge point is relatively large from the wall of the pipe gallery, resulting in a large space occupied by the power bracket. The power bracket fixed on the wall of the pipe gallery needs to be set at different heights, that is, the hole through which the fastening bolt 3' passes on at least one part of the base 1' and the cross arm 2' must be set as an arc-shaped waist hole 4' so that the swing angle of the cross arm 2' on the base 1' can be fine-tuned as well as greatly adjusted, so that it can be well installed at different heights on the arc wall of the pipe gallery. In addition, the need to increase the locking force requires that the locking axis must be at a certain distance from the hinge axis. In this way, the horizontal size of the hinged part will be relatively large, and the distance from the wire to the wall of the pipe gallery is too large, wasting the space that could have been saved. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an underground pipe gallery power support, which overcomes the problems of unreliable locking and large occupied space of the existing support.

[0005] The technical solution adopted by the present invention to solve its technical problems is: an underground pipe gallery power support, comprising a base fixed on the pipe gallery wall and a cross arm extending from the base to support the electric wires, the rear end of the cross arm being inserted into the U-shaped opening of the base and being hinged by a first core shaft, the cross arm being able to swing up and down to different angles with the base, the power support also comprising a positioning and locking structure for locking the cross arm after swinging it at different angles on the base, the positioning and locking structure being that an adjustable support rod is provided between the base and the cross arm, one end of the adjustable support rod being hinged on the base, and the other end being upwardly pressed against the cross arm through a second core shaft, the cross-sectional profile of the cross arm being a rectangular tube shape with an opening at the bottom, the two ends of the second core shaft being respectively positioned in the positioning holes on the two side walls of the cross arm, the positioning holes being at least two groups penetrating the two side walls of the cross arm and spaced apart front and back, the front and rear positioning holes on the side walls of the cross arm being connected by a slide groove below so that the second core shaft can be moved from one group of positioning holes to another group of positioning holes through the slide groove, and the length of the adjustable support rod is adjustable.

[0006] In order to make the state of the cross arm relative to the base more stable, a locking hole with an axis parallel to the axis of the first core shaft is provided on the wall of the U-shaped opening of the base and the side wall of the cross arm, and a locking bolt is provided in the locking hole.

[0007] Furthermore, in order to enable the cross arm to be locked on the base after swinging to different angles, the locking hole on the base and / or the cross arm is in the shape of an arc-shaped waist hole, and the center of the arc of the arc-shaped waist hole is located on the axis of the first core shaft.

[0008] Specifically, the structure of the adjustable support rod with adjustable length and its two ends connected to the base and the second core shaft is that a third core shaft parallel to the first core shaft is provided on the U-shaped opening of the base, and the adjustable support rod includes a coaxial first screw and a second screw, and the first screw and the second screw are connected by an internal threaded sleeve therebetween, and the other end of the first screw is sleeved on the third core shaft to form a hinged connection, and the other end of the second screw is sleeved on the second core shaft to form a hinged connection, and the change of the length of the adjustable support rod is achieved by the forward and reverse rotation of the internal threaded sleeve.

[0009] In order to ensure that the adjustable support rod supports the cross arm stably, the second core shaft is a bolt, and a nut is screwed on the bolt so that the second core shaft can be positioned in any group of positioning holes on the cross arm.

[0010] The beneficial effects of the present invention are:

[0011] 1. The power support of the present invention mainly supports the swinging cross arm through an adjustable support rod with variable length, and combined with a plurality of positioning holes provided on the cross arm, the cross arm can be stably positioned at different angles between the cross arm and the base. Only one power support is needed to meet the support requirements for wires at different heights of the inner wall of the circular pipe gallery;

[0012] Second, the cross arm can be processed by using profiles, which reduces the processing cost of the cross arm. The cross arm does not need to be bent, and the cross-sectional size of the cross arm can be reduced;

[0013] 3. The positioning and locking structure is no longer mainly set on the base, which reduces the size of the base and makes the structure of the power support compact;

[0014] 4. The use of adjustable support rods can easily and accurately adjust the cross arm to a state where the front end is slightly raised at a certain set angle with the horizontal plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the original power support;

[0016] Figure 2 is a stereogram of the present invention;

[0017] Figure 3 It is a front view of the present invention;

[0018] Figure 4 is a top view of the present invention;

[0019] Figure 5 yes Figure 4 AA section view;

[0020] Figure 6 It is a schematic diagram of the state of the present invention when used at different heights in an underground pipe gallery.

[0021] Figure 1 Middle: 1', base, 2', cross arm, 3', fastening bolts, 4', arc-shaped waist hole;

[0022] Figures 2 to 6 Middle: 1. Base, 2. Cross arm, 2-1. Positioning hole, 2-2. Slide groove, 3. First spindle, 4. Adjustable support rod, 4-1. First screw rod, 4-2. Second screw rod, 4-3. Internal threaded sleeve, 5. Second spindle, 6. Locking bolt, 7. Third spindle. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] As attached Figure 2 An underground pipe gallery power support comprises a base 1 fixed on the pipe gallery wall and a cross arm 2 extending from the base 1 and supporting electric wires, as shown in the attached Figure 3 The rear end of the cross arm 2 is inserted into the U-shaped opening of the base 1 and is hinged by the first core shaft 3. The cross arm 2 can swing up and down to different angles with the base 1. The power support also has a positioning and locking structure for locking the cross arm 2 after swinging it at different angles on the base 1. The positioning and locking structure is that an adjustable support rod 4 is provided between the base 1 and the cross arm 2. One end of the adjustable support rod 4 is hinged on the base 1, and the other end is upwardly pressed against the cross arm 2 through the second core shaft 5. The cross-sectional profile of the cross arm 2 is a rectangular tube shape with an open bottom edge, that is, the outer profile of the cross arm 2 is a rectangle, and the bottom edge of the cross arm 2 is a full opening or a partial opening; when partially open, the rigidity of the cross arm 2 is better, and the opening is provided for installation The wire clamp, both ends of the second core shaft 5 are respectively positioned in the positioning holes 2-1 on the two side walls of the cross arm 2. The positioning holes 2-1 are five groups that penetrate the two side walls of the cross arm 2 and are arranged at intervals in the front and back. One relative positioning hole 2-1 on each of the left and right side walls of the cross arm 2 is a group. The front and rear positioning holes 2-1 on the side walls of the cross arm 2 are connected by the slide groove 2-2 below, so that the second core shaft 5 can move from one group of positioning holes to another group of positioning holes 2-1 through the slide groove 2-2. The structure in which the positioning holes 2-1 are connected by the slide groove 2-2 essentially makes the positioning holes 2-1 become positioning notches. There is a slide groove 2-2 on each of the left and right side walls of the cross arm 2, and the length of the adjustable support rod 4 is adjustable.

[0025] As attached Figure 4 A locking hole with an axis parallel to the axis of the first core shaft 3 is provided on the wall of the U-shaped opening of the base 1 and the side wall of the cross arm 2, and a locking bolt 6 is provided in the locking hole. A locking bolt 6 connected to the base 1 is provided on each of the left and right side walls of the cross arm 2.

[0026] The locking hole on the base 1 is an arc-shaped waist hole, and the center of the arc of the arc-shaped waist hole is located on the axis of the first core shaft 3. In this way, when the cross arm 2 and the base 1 are at different angles, the locking bolt 6 can play a locking role. The locking bolt 6 clamps the two walls that contact the cross arm 2 and the base 1. The locking bolt 6 refers to a combination of a bolt and a nut.

[0027] like Figure 3 and Figure 5The structure of the adjustable support rod 4 being adjustable in length and its two ends connected with the base 1 and the second spindle 5 is that the U-shaped opening of the base 1 is provided with a third spindle 7 parallel to the first spindle 3, and the adjustable support rod 4 comprises a coaxial first screw rod 4-1 and a second screw rod 4-2, the first screw rod 4-1 and the second screw rod 4-2 are connected by an internal thread sleeve 4-3 therebetween, the other end of the first screw rod 4-1 is sleeved on the third spindle 7 to form a hinged connection, and the other end of the second screw rod 4-2 is sleeved on the second spindle 5 to form a hinged connection, and the length of the adjustable support rod 4 is changed by the positive and negative rotation of the internal thread sleeve 4-3. Of course, the threads at both ends of the internal thread sleeve 4-3 are positive and negative threads, so that the positive and negative rotation of the internal thread sleeve 4-3 can realize the first screw rod 4-1 and the second screw rod 4-2 approaching and moving away; of course, another form of setting can be to convert the above-mentioned screw rod into a screw sleeve, and the screw sleeve into a screw rod, so that the positive and negative rotation adjusting support rod length located in the middle is a screw rod with positive and negative threads at both ends.

[0028] The second core shaft 5 is a bolt, and a nut is screwed on the bolt so that the second core shaft 5 can be positioned in any group of positioning holes 2-1 on the cross arm 2. The nut is loosened when the power bracket is installed. After installation and during the use of the power bracket, the nut of the second core shaft 5 is in a tightened state.

[0029] The present invention can be used at different heights of underground pipe corridors. The second mandrel 5 is positioned in different positioning holes. At the same time, combined with the adjustment of the length of the adjustable support rod 4, the angle between the cross arm 2 and the base 1 can be any angle within the required range. Generally, the positioning hole 2-1 is selected for coarse angle adjustment, and then the adjustable support rod 4 is adjusted to finely adjust the angle. The number and position of the positioning holes 2-1 and the adjustable length of the adjustable support rod 4 are set according to the diameter of the pipe corridor and the designed installation height range. Figure 6 Two parallel circular T-shaped groove rails are pre-embedded on the circumferential wall of each location where the power support needs to be installed on the inner wall of the pipe gallery. The T-shaped end of the T-shaped bolt for fixing the power support is set in the T-shaped groove, and the center distance between the mounting holes on both sides of the base 1 is consistent with the center distance between the two pre-embedded T-shaped groove rails.

[0030] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An underground pipe gallery power support, comprising a base (1) fixed on the pipe gallery wall and a cross arm (2) extending from the base (1) for supporting electric wires, wherein the rear end of the cross arm (2) is inserted into a U-shaped opening of the base (1) and is hinged by a first core shaft (3), and the cross arm (2) can swing up and down to form different angles with the base (1), wherein: The electric power support also has a positioning and locking structure for locking the cross arm (2) after swinging it to different angles on the base (1), the positioning and locking structure being that an adjustable support rod (4) is provided between the base (1) and the cross arm (2), one end of the adjustable support rod (4) is hinged on the base (1), and the other end is upwardly pressed against the cross arm (2) through a second core shaft (5), the cross-sectional profile of the cross arm (2) is a rectangular tube shape with an open bottom edge, the two ends of the second core shaft (5) are respectively positioned in the positioning holes (2-1) on the two side walls of the cross arm (2), the positioning holes (2-1) are at least two groups that penetrate the two side walls of the cross arm (2) and are spaced apart from each other in the front and back, the positioning holes (2-1) arranged in the front and back on the side walls of the cross arm (2) are connected by a slide groove (2-2) below, so that the second core shaft (5) can move from one group of positioning holes (2-1) to another group of positioning holes (2-1) through the slide groove (2-2), and the length of the adjustable support rod (4) is adjustable.

2. The underground pipe gallery power support according to claim 1 is characterized in that: A through locking hole with an axis parallel to the axis of the first core shaft (3) is provided on the wall of the U-shaped opening of the base (1) and on the side wall of the cross arm (2), and a locking bolt (6) is provided in the locking hole.

3. The underground pipe gallery power support according to claim 2 is characterized in that: The locking holes on the base (1) and / or the cross arm (2) are arc-shaped waist holes, and the center of the arc line of the arc-shaped waist hole is located on the axis of the first core shaft (3).

4. The underground pipe gallery power support according to claim 1 is characterized in that: The adjustable support rod (4) is adjustable in length and its two ends are connected to the base (1) and the second core shaft (5). The structure is as follows: a third core shaft (7) parallel to the first core shaft (3) is provided on the U-shaped opening of the base (1); the adjustable support rod (4) comprises a coaxial first screw rod (4-1) and a second screw rod (4-2); the first screw rod (4-1) and the second screw rod (4-2) are connected by an internal thread sleeve (4-3) therebetween; the other end of the first screw rod (4-1) is sleeved on the third core shaft (7) to form a hinged connection; the other end of the second screw rod (4-2) is sleeved on the second core shaft (5) to form a hinged connection; and the length of the adjustable support rod (4) is changed by the forward and reverse rotation of the internal thread sleeve (4-3).

5. The underground pipe gallery power support according to claim 1 is characterized in that: The second mandrel (5) is a bolt, and a nut is screwed onto the bolt so that the second mandrel (5) can be positioned in any group of positioning holes (2-1) on the cross arm (2).

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