Connecting and fixing device and centipede ladder equipment

Abstract

The invention relates to the technical field of power installation and maintenance, and discloses a connecting and fixing device which comprises a clamping assembly, an adjusting assembly, a hoop assembly and a connecting rod. The adjusting assembly can enable the second clamping piece to move relative to the first clamping piece so as to change the size of the clamping channel, and therefore the electric pole is clamped in the clamping channel. The centipede ladder is connected to the connecting rod through the first hoop and the second hoop which are connected, one end of the connecting rod is connected with the adjusting assembly, and the adjusting assembly is further connected with the clamping assembly, so that the centipede ladder is connected to the electric pole, the centipede ladder transmits stress to the electric pole in the using process, the fixing stability of the centipede ladder is improved, bending and shaking are not prone to occurring, and the service life of the centipede ladder is prolonged. And the operation safety is effectively improved. The invention further provides centipede ladder equipment which comprises the centipede ladder and the connecting and fixing devices, and the plurality of connecting and fixing devices are uniformly arranged in the length direction of the main rod of the centipede ladder, so that the overall stress of the main rod is balanced, and the safety of the centipede ladder equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric power installation and maintenance, in particular to a connecting and fixing device and a centipede ladder device. Background Art

[0002] Insulated boom trucks are usually used as load-bearing platforms during live distribution network operations. However, when insulated boom trucks cannot enter areas with inconvenient transportation or narrow sites, insulated centipede ladders are used for operations. Insulated centipede ladders are relatively simple in structure and easy to use, making them convenient for various operations. Therefore, more and more operations are carried out using insulated centipede ladders as insulated load-bearing platforms.

[0003] When using an insulated centipede ladder, it is usually fixed with a square cable wind rope; however, when using an insulated centipede ladder for work, because the insulated centipede ladder is usually more than ten meters long, it is easy to bend and shake, which will affect the safety of the work to a certain extent. And when the site is relatively narrow and the square cable wind rope cannot be arranged, the insulated centipede ladder cannot be used for work, affecting the reliability of power supply. Summary of the invention

[0004] The purpose of the present invention is to provide a connecting and fixing device to solve the problem that the existing insulating centipede ladder can only be fixed by a square cable wind rope, which makes it impossible to work in a narrow place, and the safety is poor due to easy bending and shaking after fixation.

[0005] In order to achieve the above-mentioned object, the present invention provides a connection and fixing device, which includes a clamping assembly, an adjustment assembly, a clamping assembly and a connecting rod;

[0006] The clamping assembly comprises a first clamping member and a second clamping member which are arranged opposite to each other and used to clamp the electric pole, wherein a clamping channel for the electric pole to pass through is defined between the first clamping member and the second clamping member;

[0007] The first clamping member and the second clamping member are respectively connected to the adjustment assembly, and the adjustment assembly can make the second clamping member move relative to the first clamping member, thereby changing the size of the clamping channel;

[0008] The clamp assembly comprises a first clamp and a second clamp, wherein the first clamp is fixedly connected to the second clamp;

[0009] One end of the connecting rod is fixedly connected to the adjusting assembly, and the other end extends in a direction away from the clamping channel. The first clamping hoop is sleeved on and clamps the connecting rod; the second clamping hoop is used to clamp the centipede ladder.

[0010] Further, the adjustment assembly includes a fixed clamp arm and a screw rod;

[0011] The first clamping member comprises a first clamping arm and a first connecting portion, and the first clamping arm is fixedly connected to the fixed clamping arm through the first connecting portion;

[0012] The second clamping member comprises a second clamping arm arranged opposite to the first clamping arm, the second clamping arm is rotatably connected to the screw rod at a side facing away from the first clamping arm, the other end of the screw rod passes through the fixed clamping arm and is connected to the connecting rod, and the screw rod is threadedly connected to the fixed clamping arm;

[0013] The first connection portion is extended and arranged parallel to the axial direction of the screw rod, and the second clamping arm is slidably connected to the first connection portion.

[0014] Furthermore, it also includes a connection component; the connection component includes a connector;

[0015] The connecting head is fixedly connected to the screw rod, and an inserting groove is formed at one end of the connecting head facing away from the screw rod; the connecting rod is inserted into the inserting groove.

[0016] Furthermore, the connection assembly further comprises a locking wheel;

[0017] Two mounting grooves are symmetrically arranged on the circumference of the connector, and one end of the mounting groove close to the plug-in groove is provided with a through opening for the locking wheel to enter and exit the plug-in groove;

[0018] One end of the connecting rod plugged into the plug-in slot is symmetrically provided with two locking grooves in the circumferential direction, and the shape of the locking groove matches the locking wheel;

[0019] The locking wheel is installed in each installation groove, and the locking wheel is rotatably and eccentrically connected to the installation groove, so that the locking wheel can be rotatably engaged in the locking groove to lock and fix the connecting rod.

[0020] Furthermore, a handle is arranged on the outer peripheral surface of the locking wheel.

[0021] Furthermore, the first clamping member and the second clamping member are each provided with an arc groove on a surface on one side opposite to the other;

[0022] Each of the arc-shaped grooves is provided with an anti-skid pad.

[0023] Furthermore, the second clamping member further includes a second connecting portion connected to the second clamping arm;

[0024] The second connection portion is slidably connected to the outer periphery of the first connection portion.

[0025] Furthermore, the second clamping member further comprises a spring and a locking tongue;

[0026] The front end cross section of the locking tongue is trapezoidal, and the surface of one side of the locking tongue close to the first clamp arm is an inclined surface arranged obliquely to the first connecting portion;

[0027] The first connecting portion is provided with a plurality of locking grooves on a surface of a side opposite to the second clamping arm along a moving direction of the second clamping arm, and the shape of the locking grooves matches the locking tongue;

[0028] A sliding groove is provided on a surface of the second connecting portion on one side opposite to the first connecting portion. The locking tongue is slidably disposed in the sliding groove and is connected to the sliding groove through the spring.

[0029] Furthermore, the second clamping member further includes an adjusting rod;

[0030] An adjusting groove is provided on the top of the second connecting portion, the adjusting groove is extended in a direction perpendicular to the first connecting portion, and the adjusting groove is communicated with the sliding groove;

[0031] The adjusting rod is slidably inserted in the adjusting slot and fixedly connected to the locking tongue.

[0032] The present invention also provides a centipede ladder device, which comprises a centipede ladder and the above-mentioned connecting and fixing device;

[0033] The centipede ladder comprises a main pole, and a plurality of connecting and fixing devices are evenly spaced in the length direction of the main pole, and each of the connecting and fixing devices is fixedly connected to the main pole via the second clamp.

[0034] Compared with the prior art, the connection and fixing device provided by the present invention has the following beneficial effects:

[0035] The present invention provides a connection and fixing device, which includes a clamping assembly, an adjustment assembly, a clamping hoop assembly and a connecting rod; the adjustment assembly allows the second clamping member to move relative to the first clamping member, thereby changing the size of the clamping channel, so that the first clamping member and the second clamping member clamp the electric pole in the clamping channel. The centipede ladder is connected to the connecting rod through the first clamping hoop and the second clamping hoop that are fixedly connected, and one end of the connecting rod is fixedly connected to the adjustment assembly. Since the adjustment assembly is also connected to the first clamping member and the second clamping member, the centipede ladder is finally connected to the electric pole; therefore, the force applied to the centipede ladder during use can be transmitted to the electric pole, so as to effectively improve the stability of the centipede ladder fixation, so that the centipede ladder is not prone to bending and shaking, thereby effectively improving the safety of the operation; and the connection and fixing device realizes the fixation of the centipede ladder by connecting the centipede ladder and the electric pole, and its use will not be limited by the size of the site, which is convenient for layout, installation and use. In addition, the size of the clamping channel is adjustable, so that the connection and fixing device can be applied to electric poles of different diameters for clamping and fixing, and has high applicability.

[0036] The present invention also provides a centipede ladder device, which includes a centipede ladder and the above-mentioned connecting and fixing device; the centipede ladder includes a main pole, and a plurality of the connecting and fixing devices are evenly arranged along the length direction of the main pole, so as to balance the overall force of the main pole, so that the force of each part is evenly transmitted to the pole, avoiding problems such as bending caused by local uneven force, thereby improving the safety of the centipede ladder device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a three-dimensional structural schematic diagram of a connecting fixing device, a centipede ladder and an electric pole according to an embodiment of the present invention;

[0038] Figure 2 yes Figure 1 A magnified schematic diagram of the middle A area;

[0039] Figure 3 yes Figure 2 A magnified schematic diagram of the middle A area;

[0040] Figure 4 is a cross-sectional schematic diagram of the connection structure of the lock tongue and the lock groove in an embodiment of the present invention;

[0041] Figure 5 is a cross-sectional schematic diagram of a connection structure of a connecting rod and a connecting head in an embodiment of the present invention;

[0042] Figure 6 It is a schematic diagram of the connection between a centipede ladder device and an electric pole according to an embodiment of the present invention.

[0043] In the figure, 100, connecting and fixing device; 1, clamping assembly; 10, clamping channel; 101, arc groove; 1011, anti-slip pad; 11, first clamping member; 111, first clamping arm; 112, first connecting portion; 1120, locking groove; 12, second clamping member; 121, second clamping arm; 122, second connecting portion; 1221, sliding groove; 1222, adjusting groove; 123, spring; 124, locking tongue; 125, adjusting Section rod; 2, adjustment assembly; 21, fixed clamp arm; 22, screw rod; 3, clamp assembly; 31, first clamp; 32, second clamp; 4, connecting rod; 41, locking groove; 5, connecting assembly; 51, connecting head; 511, plug-in groove; 512, installation groove; 5120, through-port; 52, locking wheel; 521, handle; 1000, centipede ladder equipment; 200, centipede ladder; 201, main pole; 2000, electric pole. DETAILED DESCRIPTION

[0044] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0045] like Figure 1 to Figure 5 As shown, a connecting and fixing device 100 of an embodiment of the present invention comprises a clamping assembly 1, an adjusting assembly 2, a clamping hoop assembly 3 and a connecting rod 4; the clamping assembly 1 comprises a first clamping piece 11 and a second clamping piece 12 which are arranged opposite to each other and used to clamp the electric pole 2000, and a clamping channel 10 for the electric pole 2000 to pass through is defined between the first clamping piece 11 and the second clamping piece 12; the first clamping piece 11 and the second clamping piece 12 are respectively connected to the adjusting assembly 2, and the adjusting assembly 2 can make the second clamping piece 12 move relative to the first clamping piece 11, thereby changing the size of the clamping channel 10; the clamping hoop assembly 3 comprises a first clamping hoop 31 and a second clamping hoop 32; the first clamping hoop 31 is fixedly connected to the second clamping hoop 32, one end of the connecting rod 4 is fixedly connected to the adjusting assembly 2, and the other end extends in a direction away from the clamping channel 10; the first clamping hoop 31 is sleeved on and clamps the connecting rod 4; the second clamping hoop 32 is used to clamp the centipede ladder 200.

[0046] Based on the above technical solution, the second clamping member 12 is moved relative to the first clamping member 11 by the adjusting assembly 2, thereby changing the size of the clamping channel 10, so that the first clamping member 11 and the second clamping member 12 clamp the electric pole 2000 in the clamping channel 10. The centipede ladder 200 is connected to the connecting rod 4 through the first clamping hoop 31 and the second clamping hoop 32 that are fixedly connected, and one end of the connecting rod 4 is fixedly connected with the adjusting assembly. Since the adjusting assembly 2 is also connected to the first clamping member 11 and the second clamping member 12, the centipede ladder 200 is finally connected to the electric pole 2000; therefore, the force of the centipede ladder 200 during use can be transmitted to the electric pole 2000, so as to effectively improve the stability of the centipede ladder fixation, so that the centipede ladder is not easy to bend and shake, thereby effectively improving the safety of the operation; and the connecting and fixing device 100 realizes the fixation of the centipede ladder 200 by connecting the centipede ladder 200 and the electric pole 2000, and its use will not be limited by the size of the site, which is convenient for layout, installation and use. In addition, the size of the clamping channel 10 is adjustable, so that the connecting and fixing device 100 can be used to clamp and fix poles 2000 of different diameters, and has high applicability.

[0047] Furthermore, if Figure 1 and Figure 2As shown, the adjustment assembly 2 includes a fixed clamp arm 21 and a screw rod 22; the first clamping member 11 includes a first clamp arm 111 and a first connecting portion 112, the first clamp arm 111 is fixedly connected to the fixed clamp arm 21 through the first connecting portion 112; the second clamping member 12 includes a second clamp arm 121 arranged opposite to the first clamp arm 111, the second clamp arm 121 is rotatably connected to the screw rod 22 on a side facing away from the first clamp arm 111, the other end of the screw rod 22 passes through the fixed clamp arm 21 and is connected to the connecting rod 4, and the screw rod 22 is screwed to the fixed clamp arm 21; the first connecting portion 112 is arranged parallel to the axial extension of the screw rod 22, and the second clamp arm 121 is slidably connected to the first connecting portion 112.

[0048] Since the second clamping arm 121 is slidably connected to the first connecting portion 112, and the first connecting portion 112 is extended parallel to the axial direction of the screw rod 22, when the screw rod 22 rotates, the second clamping arm 121 can only move along the axial direction of the screw rod 22 without rotating; thereby, rotating the screw rod 22 can enable the second clamping member 12 to move relative to the first clamping member 11, thereby changing the size of the clamping channel 10, and then achieving clamping and fixation of the electric pole 2000.

[0049] Furthermore, if Figure 1 and Figure 2 As shown, in order to facilitate the fixed connection between the screw rod 22 and the connecting rod 4, the connecting and fixing device 100 also includes a connecting component 5, and the connecting component 5 includes a connecting head 51. The connecting head 51 is fixedly connected to the screw rod 22, and a plug-in groove 511 is formed at one end of the connecting head 51 facing away from the screw rod 22; the connecting rod 4 is plugged into the plug-in groove 511.

[0050] Preferably, if Figure 5 As shown, the connecting head 51 and the screw rod 22 are integrally formed to ensure the connection reliability and enhance the strength of the screw rod 22; the connecting head 51 and the screw rod 22 in this embodiment are made of nylon, which has good insulation properties and can improve safety during live working.

[0051] Furthermore, if Figure 1 , Figure 2 and Figure 5As shown, in order to improve the stability of the connecting rod 4 fixedly plugged into the connecting head 51; the connecting assembly 5 also includes a locking wheel 52; two mounting grooves 512 are symmetrically arranged on the circumference of the connecting head 51, and one end of the mounting groove 512 close to the plug-in groove 511 is provided with a through opening 5120 for the locking wheel to enter and exit the plug-in groove 511; two locking grooves 41 are symmetrically arranged on the circumference of one end of the connecting rod 4 plugged into the plug-in groove 511, and the shape of the locking groove 41 matches the locking wheel 52; the locking wheel 52 is installed in each mounting groove 512, and the locking wheel 52 is rotatably eccentrically connected to the mounting groove 512, so that the locking wheel 52 can be rotatably engaged in the locking groove 41 to lock and fix the connecting rod 4. By rotating the locking wheel 52 eccentrically connected to the installation groove 512, the locking wheel 52 enters the insertion groove 511 from the through opening 5120 and is engaged with the locking groove 41, thereby locking and fixing the connecting rod 4 and fixing it in the connecting head 51, thereby preventing it from accidentally falling out and causing the centipede ladder 200 to flip over and tip over.

[0052] Furthermore, if Figure 2 and Figure 5 As shown, a handle 521 is arranged on the outer circumference of the locking wheel 52. The handle 521 is used to facilitate the rotation of the locking wheel 52 to engage it in the locking groove 41, and to facilitate the rotation of the connector 51 to drive the screw rod 22.

[0053] Furthermore, if Figure 2 As shown, an arc groove 101 is provided on the surface of the first clamping member 11 and the second clamping member 12 on one side opposite to each other. The arc groove 101 is vertically arranged and passes through the upper and lower surfaces of the first clamping member 11 or the second clamping member 12. Since the pole 2000 is generally cylindrical, the arc shape of the arc groove 101 is easier to fit with the pole 2000, thereby improving the reliability of clamping and fixing. An anti-slip pad 1011 is installed on each of the arc grooves 101 to prevent the first clamping member 11 and the second clamping member 12 from sliding relative to the pole 2000, further improving the reliability of clamping and fixing.

[0054] Furthermore, if Figure 1 and Figure 2 As shown, in order to facilitate the sliding connection between the second clamping arm 121 and the first connecting portion 112 , the second clamping member 12 further includes a second connecting portion 122 connected to the second clamping arm 121 ; the second connecting portion is slidably connected to the outer periphery of the first connecting portion 112 .

[0055] Furthermore, if Figure 4As shown, the second clamping member 12 also includes a spring 123 and a locking tongue 124; the front end cross-section of the locking tongue 124 is trapezoidal, and the side surface of the locking tongue 124 close to the first clamping arm 111 is an inclined surface inclined to the first connecting portion 112; the first connecting portion 112 is provided with a plurality of locking grooves 1120 on a side surface relative to the second clamping arm 121 along the moving direction of the second clamping arm 121, and the shape of the locking groove 1120 matches the locking tongue 124; the second connecting portion 122 is provided with a sliding groove 1221 on a side surface relative to the first connecting portion 112, and the locking tongue 124 is slidably arranged in the sliding groove 1221 and connected to the sliding groove 1221 through the spring 123. When the second clamp arm 121 approaches the first clamp arm 111, the locking tongue 124 is correspondingly inserted into a locking groove 1120 close to it, and the surface of the locking tongue 124 facing away from the first clamp arm 111 is a plane, and the surface of the locking groove 1120 that abuts against the side plane is also a plane, and the two planes abut against each other, so that the locking tongue 124 is fixed in the locking groove 1120, and the second clamp arm 121 will not retreat. When the second clamp arm 121 continues to move toward the direction close to the first clamp arm 111, since the side of the locking tongue 124 close to the first clamp arm 111 is an inclined surface, the locking tongue 124 can squeeze the spring 123 and escape from the locking groove 1120, and then be inserted into the previous locking groove 1120.

[0056] Furthermore, if Figure 3 and Figure 4 As shown, in order to facilitate the unlocking of the locking tongue 124 from the locking groove 1120, the second clamping member 12 further includes an adjusting rod 125; an adjusting groove 1222 is provided at the top of the second connecting portion 122, the adjusting groove 1222 is extended in a direction perpendicular to the first connecting portion 112, and the adjusting groove 1222 is communicated with the sliding groove 1221; the adjusting rod 125 is slidably inserted in the adjusting groove 1222 and fixedly connected to the locking tongue 124. By pulling the adjusting rod 125 to change its position in the adjusting groove 1222, the locking tongue 124 is unlocked from the locking groove 1120.

[0057] like Figure 6 As shown, an embodiment of the present invention further provides a centipede ladder device 1000, which includes a centipede ladder 200 and the above-mentioned connecting and fixing device 100; the centipede ladder 200 includes a main pole 201, and a plurality of the connecting and fixing devices 100 are evenly spaced in the length direction of the main pole 201, and each of the connecting and fixing devices 100 is fixedly connected to the main pole 201 through the second clamp 32.

[0058] Based on the above technical solution, a plurality of the connecting and fixing devices 100 are evenly arranged along the length direction of the main pole 201, so as to balance the overall force of the main pole 201, so that the force of each part is evenly transmitted to the pole 2000, avoiding problems such as bending caused by local uneven force, thereby improving the safety of the centipede ladder device 1000.

[0059] The working process of the present invention is:

[0060] The centipede ladder 200 is placed vertically on one side of the electric pole 2000; the handle 521 is grasped to rotate the connector 51 to drive the screw rod 22 to rotate, so that the second clamping arm 121 moves away from the first clamping arm 111, thereby opening the clamping channel 10, and thus clamping the electric pole 2000 in the clamping channel 10. The connector 51 is rotated in the opposite direction to drive the screw rod 22 to rotate, so that the second clamping arm 121 moves toward the first clamping arm 111, thereby clamping the electric pole 2000.

[0061] Insert the end of the connecting rod 4 with the locking groove 41 into the insertion groove 511 of the connecting head 51. Then rotate the handle 521 to rotate the locking wheel 52 so that the locking wheel 52 is engaged with the locking groove 41 to lock and fix the connecting rod 4, thereby improving the connection stability between the connecting rod 4 and the connecting head 51.

[0062] Finally, the first clamp 31 is clamped and fixed to the connecting rod 4, and then the second clamp 32 is clamped and fixed to the main pole 201, so as to complete the connection between the main pole 201 and the electric pole 2000.

[0063] In summary, an embodiment of the present invention provides a connecting and fixing device 100, which includes a clamping component 1, an adjusting component 2, a clamping component 3 and a connecting rod 4; the adjusting component 2 is used to move the second clamping component 12 relative to the first clamping component 11, thereby changing the size of the clamping channel 10, so that the first clamping component 11 and the second clamping component 12 clamp the pole 2000 in the clamping channel 10. The centipede ladder 200 is connected to the connecting rod 4 through the first clamp 31 and the second clamp 32 which are fixedly connected. One end of the connecting rod 4 is fixedly connected with the adjusting assembly. Since the adjusting assembly 2 is also connected to the first clamp 11 and the second clamp 12, the centipede ladder 200 is finally connected to the electric pole 2000. Therefore, the force applied to the centipede ladder 200 during use can be transmitted to the electric pole 2000, so as to effectively improve the stability of the centipede ladder fixation, and make the centipede ladder less prone to bending and shaking, thereby effectively improving the safety of the operation. The connecting and fixing device 100 fixes the centipede ladder 200 by connecting the centipede ladder 200 and the electric pole 2000. Its use will not be limited by the size of the site, and it is convenient for layout, installation and use. In addition, the size of the clamping channel 10 is adjustable, so that the connecting and fixing device 100 can be used for clamping and fixing electric poles 2000 of different diameters, and has high applicability.

[0064] The present invention also provides a centipede ladder device 1000, which includes a centipede ladder 200 and the above-mentioned connecting and fixing device 100; the centipede ladder 200 includes a main pole 201, and a plurality of the connecting and fixing devices 100 are evenly arranged along the length direction of the main pole 201, so as to balance the overall force of the main pole 201, so that the force of each part is evenly transmitted to the pole 2000, avoiding problems such as bending caused by local uneven force, thereby improving the safety of the centipede ladder device 1000.

[0065] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A connecting and fixing device, characterized in that: It includes a clamping assembly, an adjusting assembly, a clamping assembly and a connecting rod; The clamping assembly comprises a first clamping member and a second clamping member which are arranged opposite to each other and used to clamp the electric pole, wherein a clamping channel for the electric pole to pass through is defined between the first clamping member and the second clamping member; The first clamping member and the second clamping member are respectively connected to the adjustment assembly, and the adjustment assembly can make the second clamping member move relative to the first clamping member, thereby changing the size of the clamping channel; The clamp assembly comprises a first clamp and a second clamp, wherein the first clamp is fixedly connected to the second clamp; One end of the connecting rod is fixedly connected to the adjusting assembly, and the other end extends in a direction away from the clamping channel. The first clamping hoop is sleeved on and clamps the connecting rod; the second clamping hoop is used to clamp the centipede ladder.

2. The connecting and fixing device according to claim 1, characterized in that: The adjustment assembly includes a fixed clamp arm and a screw rod; The first clamping member comprises a first clamping arm and a first connecting portion, and the first clamping arm is fixedly connected to the fixed clamping arm through the first connecting portion; The second clamping member comprises a second clamping arm arranged opposite to the first clamping arm, the second clamping arm is rotatably connected to the screw rod at a side facing away from the first clamping arm, the other end of the screw rod passes through the fixed clamping arm and is connected to the connecting rod, and the screw rod is threadedly connected to the fixed clamping arm; The first connection portion is extended and arranged parallel to the axial direction of the screw rod, and the second clamping arm is slidably connected to the first connection portion.

3. The connecting and fixing device according to claim 2, characterized in that: Also includes a connection component; the connection component includes a connector; The connecting head is fixedly connected to the screw rod, and an inserting groove is formed at one end of the connecting head facing away from the screw rod; the connecting rod is inserted into the inserting groove.

4. The connecting and fixing device according to claim 3, characterized in that: The connection assembly also includes a locking wheel; Two mounting grooves are symmetrically arranged on the circumference of the connector, and one end of the mounting groove close to the plug-in groove is provided with a through opening for the locking wheel to enter and exit the plug-in groove; One end of the connecting rod plugged into the plug-in slot is symmetrically provided with two locking grooves in the circumferential direction, and the shape of the locking groove matches the locking wheel; The locking wheel is installed in each installation groove, and the locking wheel is rotatably and eccentrically connected to the installation groove, so that the locking wheel can be rotatably engaged in the locking groove to lock and fix the connecting rod.

5. The connecting and fixing device according to claim 4, characterized in that: A handle is arranged on the outer peripheral surface of the locking wheel.

6. The connecting and fixing device according to claim 1, characterized in that: The first clamping member and the second clamping member are provided with arc-shaped grooves on their surfaces on one side opposite to each other; Each of the arc-shaped grooves is provided with an anti-skid pad.

7. The connecting and fixing device according to claim 2, characterized in that: The second clamping member further comprises a second connecting portion connected to the second clamping arm; The second connection portion is slidably connected to the outer periphery of the first connection portion.

8. The connecting and fixing device according to claim 7, characterized in that: The second clamping member also includes a spring and a locking tongue; The front end cross section of the locking tongue is trapezoidal, and the surface of one side of the locking tongue close to the first clamp arm is an inclined surface arranged obliquely to the first connecting portion; The first connecting portion is provided with a plurality of locking grooves on a surface of a side opposite to the second clamping arm along a moving direction of the second clamping arm, and the shape of the locking grooves matches the locking tongue; A sliding groove is provided on a surface of the second connecting portion on one side opposite to the first connecting portion. The locking tongue is slidably disposed in the sliding groove and is connected to the sliding groove through the spring.

9. The connecting and fixing device according to claim 8, characterized in that: The second clamping member further includes an adjustment rod; An adjusting groove is provided on the top of the second connecting portion, the adjusting groove is extended in a direction perpendicular to the first connecting portion, and the adjusting groove is communicated with the sliding groove; The adjusting rod is slidably inserted in the adjusting slot and fixedly connected to the locking tongue.

10. A centipede ladder device, characterized in that: It comprises a centipede ladder and a connecting and fixing device as claimed in any one of claims 1 to 9; The centipede ladder comprises a main pole, and a plurality of connecting and fixing devices are evenly spaced in the length direction of the main pole, and each of the connecting and fixing devices is fixedly connected to the main pole via the second clamp.

Images