Brake adjusting assembly and pipeline endoscope

Abstract

The utility model provides a brake adjusting assembly and a pipeline endoscope, the brake adjusting assembly comprises a brake adjuster, the brake adjuster comprises a shell, a brake tightness adjusting rod, a brake connecting line rod, a coil pipe and a brake mechanism; the connecting brake cable rod is fixed in the shell, one end of the connecting brake cable rod is fixedly connected with the brake tightness adjusting rod, and the other end of the connecting brake cable rod is fixedly connected with a steel wire rope in the coil pipe; and the brake mechanism is arranged outside the shell and is in transmission connection with the brake tightness adjusting rod, so that the brake mechanism drives the steel wire rope in the coil pipe to move through the brake tightness adjusting rod so as to brake the external wire outlet structure. According to the utility model, the brake adjusting assembly is provided with the brake adjuster, brake adjustment is carried out on an external outgoing line through the brake adjuster, rapid and stable control on the outgoing line speed of outgoing line structures such as a wire coil can be realized, and the efficiency and the use convenience are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of video detection, and particularly relates to a brake adjusting assembly and a pipeline endoscope. Background Art

[0002] The pipeline endoscope is mainly used for video detection inside pipelines. A wire reel with a rotating axis is a prerequisite for the cable to enter and exit. Since the wire reel is pulled to rotate, the cable is taken in and released accordingly. However, the existing pipeline endoscopes currently cannot well control the outgoing speed of the cable on the wire reel. This will cause the coil to continue to deliver the cable due to inertia after stopping pulling when the coil is forcefully pulling out the cable, resulting in inconvenient operation. Therefore, a structure for braking the coil is particularly important.

[0003] Based on this, it is necessary to provide a brake adjusting assembly that can regulate the outgoing speed of the wire reel, greatly increasing the convenience of use and improving the efficiency of cable taking in and out. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a brake adjusting assembly to solve the deficiency that the outgoing speed of the outgoing device in the prior art cannot be well controlled.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A brake adjusting assembly includes a brake adjuster, and the brake adjuster includes a housing, an adjusting brake tightening rod, a connecting brake wire rod, a flexible conduit, and a brake mechanism;

[0007] The connecting brake wire rod is fixed inside the housing. One end of the connecting brake wire rod is fixedly connected to the adjusting brake tightening rod, and the other end is fixedly connected to the steel wire rope inside the flexible conduit;

[0008] The brake mechanism is arranged outside the housing, and the brake mechanism is in transmission connection with the adjusting brake tightening rod, so that the brake mechanism drives the steel wire rope inside the flexible conduit to move through the adjusting brake tightening rod to brake the external outgoing structure.

[0009] In the utility model, the brake mechanism includes a brake knob part and a brake slider; the brake slider is located above the brake knob part, and the brake slider is in contact connection with the brake knob part; the brake slider is sleeved outside the adjusting brake tightening rod and limits and fixes the adjusting brake tightening rod. By rotating the brake knob part, the brake slider moves up and down, so that the adjusting brake tightening rod moves up and down following the brake slider.

[0010] In some embodiments of the present utility model, the brake sliding member is provided with a convex portion; the brake knob member includes a tooth portion and a limiting portion; the tooth portion of the brake knob member is provided with a plurality of teeth, and the teeth are sequentially connected in a stepped manner; the tooth portion of the brake knob member is adapted to the convex portion of the brake sliding member, and the limiting portion of the brake knob member limits and fixes the convex portion of the brake sliding member. By providing a plurality of stepped teeth on the brake knob member and cooperating with the convex portion of the brake sliding member, progressive adjustment control of the moving distance of the brake tightening rod can be achieved, thereby realizing multi-gear adjustment of the tightness of the steel wire rope in the snake tube by the brake mechanism and enhancing the stability of the adjustment.

[0011] Further, the top of the tooth is arc-shaped, and a certain falling angle is formed at the connection between the teeth. The falling angle is 100°-115°. The stepped top of each tooth is arc-shaped, and there is a falling angle after the arc height. The falling angle is beneficial to gear staying and can improve the stability of brake adjustment. Preferably, the falling angle is 105°.

[0012] Further, the radian of the tooth corresponding to the circumferential arc is 10°-12°, and the tooth height is 0.82 mm - 0.88 mm.

[0013] Further, the tooth portion of the brake knob member is provided with seven teeth.

[0014] The following improvements can be made to the present utility model. The brake mechanism further includes a brake master cylinder guide column member, and the brake knob member is sleeved on the brake master cylinder guide column member; the brake sliding member is sleeved on the brake master cylinder guide column member. By the brake master cylinder guide column member playing a role in limiting and fixing the brake knob member and the brake sliding member, the stability of the adjustment of the brake mechanism can be further improved.

[0015] In the present utility model, the brake master cylinder guide column member is provided with a guide column, and the brake sliding member is provided with a guide hole for the brake master cylinder guide column member to pass through.

[0016] Further, there are two guide columns, which are symmetrically arranged, and there are two guide holes.

[0017] Further, the brake master cylinder guide column member is fixed on the housing.

[0018] In some embodiments of the present utility model, the brake master cylinder guide column member is provided with a limiting groove, and correspondingly, the brake knob member is provided with a limiting protrusion, and the limiting groove of the brake master cylinder guide column member cooperates with the limiting protrusion of the brake knob member. By setting like this, the brake knob member can only rotate a certain angle within the range defined by the limiting groove of the brake master cylinder guide column member and cannot move up and down, which improves the stability of the adjustment of the brake mechanism.

[0019] The present utility model can be further improved. The braking mechanism further includes a braking knob cover which is fixedly connected to the braking knob member and sleeved outside the braking knob member. By means of the braking knob cover, it is more convenient to rotate the braking knob member. One only needs to rotate the braking knob cover clockwise or counterclockwise to drive the steel wire rope inside the flexible pipe to brake. At the same time, it can protect the internal structure and is more aesthetically pleasing.

[0020] In the present utility model, the braking adjustment assembly further includes a braking disc which is fixedly connected to the steel wire rope inside the flexible pipe.

[0021] Furthermore, the braking disc includes a braking seat, a clamping braking frame and a first brake pad; the braking seat is provided with a serrated disc, the clamping braking frame is arranged around the serrated disc, one end of the clamping braking frame is hinged to the braking seat, and the other end is fixedly connected to the steel wire rope inside the flexible pipe; the first brake pad is provided with a serrated part which cooperates with the serrated disc of the braking seat, and the clamping braking frame is fixedly connected to the first brake pad so that the first brake pad tightly abuts against the serrated disc of the braking seat.

[0022] Furthermore, the braking disc further includes a second brake pad which is fixed on the clamping braking frame and is adapted to the serrated disc of the braking seat.

[0023] Furthermore, the clamping braking frame is provided with a fixing groove, and the second brake pad is fixed in the fixing groove.

[0024] The present utility model can also be improved as follows. The braking disc further includes a fixing frame which is fixed on the braking seat; the flexible pipe is fixed on the fixing frame.

[0025] Furthermore, a compression spring is sleeved outside the steel wire rope of the flexible pipe between the fixing frame and the clamping braking frame. By providing the compression spring, the steel wire rope inside the flexible pipe can be adjusted back and forth, and it has a relaxation and reset function.

[0026] A pipeline endoscope includes the above-mentioned braking adjustment assembly.

[0027] In the present utility model, the pipeline endoscope includes an upper coil, a lower coil and a bracket; the upper coil is fixed on the bracket; the lower coil is fixed on the braking disc of the braking adjustment assembly, and the braking disc is fixed on the bracket; the upper coil is placed inside the lower coil. By braking and adjusting the lower coil through the braking adjustment assembly, when the braking disc clamps tightly, the lower coil also clamps tightly, and they move synchronously to realize real-time adjustment and control of the rotation of the coil.

[0028] Furthermore, the lower coil is fixed on the braking seat of the braking disc.

[0029] The present utility model can be improved as follows. The upper coil is fixed on the bracket through a turntable, and the turntable is connected to the brake disc through a metal cylinder sleeve; a bearing is provided inside the metal cylinder sleeve. With such a setting, the metal cylinder sleeve, the upper coil, and the lower coil are installed on the same axis, and the upper coil and the lower coil rotate independently of each other without affecting each other, while increasing the rotational stability of the upper coil and the lower coil.

[0030] The present utility model has the following beneficial effects:

[0031] (1) The brake adjustment component of the present utility model is provided with a brake adjuster. By using the brake adjuster to perform braking adjustment on the external outgoing wire, it is possible to quickly and stably control the outgoing wire speed of wire spools and other outgoing wire structures, improving efficiency and the convenience of use.

[0032] (2) The brake adjustment component of the present utility model adopts a structure that does not require disassembly for adjustment, bringing great convenience to users. The brake mechanism is used to achieve the adjustment and control of the brake disc. The brake mechanism converts rotational motion into linear motion. When the brake knob rotates, the adjusting brake tightening rod moves perpendicular to the movement direction of the brake knob, saving space. At the same time, it has a multi-stage adjustment function, meeting the usage requirements of different working conditions, and improving the stability of the adjustment of the brake disc.

[0033] (3) The pipeline endoscope of the present utility model realizes the control of the pipeline endoscope coil speed through the brake adjustment component, greatly improving the adjustment ability of the pipeline endoscope coil speed and reducing the space occupied by the pipeline endoscope. A snake tube that can be pulled remotely is applied, which is not affected by turning, has a large pulling force, has a spring feel, and adopts a technical method of using an elastic clamping brake frame to tightly clamp the brake around the center of the circle. A deceleration method that combines metal brake pads and plastic friction deceleration, as well as rubber brake pads and plastic friction deceleration, is adopted to improve the sensitivity of speed regulation and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0035] Figure 1 is the overall structural schematic diagram of the brake adjuster of the present utility model;

[0036] Figure 2 is Figure 1 the exploded view of

[0037] Figure 3 is the assembly structure diagram of the brake knob, brake slider, and brake main bearing guide column of the present utility model;

[0038] Figure 4 is the structural schematic diagram of the brake knob of the present utility model;

[0039] Figure 5 Structural schematic diagram of the brake sliding part of the present utility model;

[0040] Figure 6 Structural schematic diagram of the guide post part of the brake master assembly of the present utility model;

[0041] Figure 7 Structural schematic diagram of the tooth part of the brake knob part of the present utility model;

[0042] Figure 8 Partial enlarged view of the tooth part of the present utility model;

[0043] Figure 9 Partial sectional view of the brake adjuster;

[0044] Figure 10 Structural schematic diagram of the brake adjustment assembly of the present utility model;

[0045] Figure 11 is Figure 10 exploded view of;

[0046] Figure 12 Overall structural schematic diagram of the brake disc of the present utility model;

[0047] Figure 13 Overall structural schematic diagram of the pipeline endoscope of the present utility model;

[0048] Figure 14 is Figure 13 exploded view of;

[0049] Figure 15 Exploded view of the connection structure of the upper coil, lower coil and brake adjustment assembly of the present utility model;

[0050] The reference signs in the drawings are as follows: 1. Brake adjuster; 2. Brake disc; 3. Housing; 4. Adjusting brake tightening rod; 5. Connecting brake wire rod; 6. Flexible hose; 7. Brake mechanism; 8. Linear groove; 9. Fixed groove; 10. Brake seat; 11. Clamping brake frame; 12. First brake pad; 13. Second brake pad; 14. Fixed frame; 15. Compression spring; 16. Serrated disc; 17. Upper coil; 18. Lower coil; 19. Bracket; 20. Turntable; 21. Metal sleeve; 601. Steel wire rope; 701. Brake knob part; 702. Brake sliding part; 703. Guide post part of brake master assembly; 704. Brake knob cover; 7011. Tooth part; 7012. Limiting part; 7013. Limiting protrusion; 7014. Tooth; 7021. Central hole; 7022. Guide hole; 7023. Protruding part; 7031. Guide post; 7032. Limiting groove. Detailed implementation manners

[0051] Embodiment 1

[0052] As Figures 1-9 shown in the brake adjustment assembly, which includes a brake adjuster 1. The brake adjuster 1 includes a housing 3, a brake tightening lever 4, a brake cable connecting rod 5, a corrugated tube 6, and a brake mechanism 7.

[0053] The corrugated tube 6 is fixedly connected to the housing 3, and the brake cable connecting rod 5 is fixed inside the housing 3. One end of the brake cable connecting rod 5 is fixedly connected to the brake tightening lever 4, and the other end is fixedly connected to the steel wire rope 601 inside the corrugated tube 6; the brake mechanism 7 is arranged outside the housing 3, and the brake mechanism 7 is in transmission connection with the brake tightening lever 4, so that the brake mechanism 7 drives the steel wire rope 601 inside the corrugated tube 6 to move through the brake tightening lever 4 to brake the external wire outlet structure.

[0054] In this embodiment, the brake mechanism 7 includes a brake knob part 701, a brake slider 702, a brake main bearing guide post part 703, and a brake knob cover 704. The brake knob part 701 is sleeved on the brake main bearing guide post part 703, the brake slider 702 is sleeved on the brake main bearing guide post part 703, the brake slider 702 is located above the brake knob part 701, and the brake slider 702 is in contact connection with the brake knob part 701. Specifically, the brake main bearing guide post part 703 is fixed on the housing 3, and two guide posts 7031 are provided at the top of the brake main bearing guide post part 703 and are symmetrically arranged. Correspondingly, the brake slider 702 is provided with two guide holes 7022 for the guide posts 7031 of the brake main bearing guide post part 703 to pass through, so that the brake slider 702 can slide up and down along the guide posts 7031 of the brake main bearing guide post part 703 through the guide holes 7022; two limit grooves 7032 are provided at the bottom of the brake main bearing guide post part 703. Correspondingly, the brake knob part 701 is provided with two limit protrusions 7013, and the limit grooves 7032 of the brake main bearing guide post part 703 cooperate with the limit protrusions 7013 of the brake knob part 701. By such a setting, the brake knob part 701 can only rotate a certain angle within the range defined by the limit grooves 7032 of the brake main bearing guide post part 703 and cannot move up and down, which improves the stability of the adjustment of the brake mechanism 7.

[0055] In this embodiment, the brake slider 702 is provided with a convex portion 7023; the brake knob 701 includes a tooth portion 7011 and a limiting portion 7012; the tooth portion 7011 of the brake knob 701 is provided with a plurality of teeth 7014, and the teeth 7014 are sequentially connected in a stepped manner; the top of each tooth 7014 is arc-shaped, and a certain falling angle is formed at the connection between the teeth 7014. The tooth portion 7011 of the brake knob 701 is adapted to the convex portion 7023 of the brake slider 702, and the limiting portion 7012 of the brake knob 701 limits and fixes the convex portion 7023 of the brake slider 702. Specifically, the tooth portion 7011 of the brake knob 701 is provided with seven teeth 7014, the radian α of the circumferential arc corresponding to each tooth 7014 is 11°, and the height of the tooth 7014 (the vertical height difference h between the two low points on both sides of each tooth 7014) is 0.85 mm. The falling angle β is 105°. By such a setting, progressive adjustment control of the moving distance of the brake tightening rod 4 can be realized, so as to realize multi-stage (seven stages) adjustment of the tightness of the steel wire rope 601 in the snake tube 6 by the brake mechanism 7 in the brake adjuster 1, and at the same time, the adjustment has better stability.

[0056] In this embodiment, the brake slider 702 supports the brake tightening rod 4. The brake tightening rod 4 is arranged through the central circular hole 7021 of the brake slider 702, sequentially passes through the brake master cylinder guide column 703 and the brake knob 701, and then enters the interior of the housing 3, and is threadedly connected to the connecting brake wire rod 5 in the housing 3. A straight groove 8 for placing the connecting brake wire rod 5 is provided in the housing 3. The straight groove 8 plays a role in fixing and limiting the connecting brake wire rod 5, so that the connecting brake wire rod 5 cannot rotate in the straight groove 8 and can only move linearly up and down. The distance of the up and down movement is the maximum distance that the brake tightening rod 4 can adjust. The brake knob cover 704 is fixedly connected to the brake knob 701. By rotating the brake knob cover 704, the brake knob 701 is driven to rotate. Its rotation range is limited by the limiting groove 7032 of the brake master cylinder guide column 703. The tooth portion 7011 of the brake knob 701 is in contact and cooperation with the convex portion 7023 of the brake slider 702. The teeth with different heights of the tooth portion 7011 are in contact with the convex portion 7023 of the brake slider 702, and the brake slider 702 is lifted to different heights, so that the brake tightening rod 4 can be driven to move up and down different distances, thereby converting the circular motion of the brake knob cover 704 into the linear motion of the tightening rod. The brake tightening rod 4 drives the connecting brake wire rod 5 to move, and further drives the steel wire rope 601 in the snake tube 6 to move, pulling the external brake disc 2 to realize the braking of the brake disc 2.

[0057] Embodiment 2

[0058] As Figures 10-12The described brake adjustment assembly includes the brake adjuster 1 of Embodiment 1 and also includes a brake disc 2. The other end of the steel wire rope 601 in the coiled tube 6 of the brake adjuster 1 is fixedly connected to the brake disc 2.

[0059] The brake disc 2 includes a brake seat 10, a clamping brake frame 11, and a first brake pad 12. The brake seat 10 is provided with a serrated disc 16. The clamping brake frame 11 is an elastic plastic part and is arranged around the serrated disc 16. One end of the clamping brake frame 11 is hinged to the brake seat 10, and the other end is fixedly connected to the steel wire rope 601 in the coiled tube 6; the first brake pad 12 is made of plastic material and is provided with a serrated part 7011 that cooperates with the serrated disc 16 of the brake seat 10. The clamping brake frame 11 is fixedly connected to the first brake pad 12, so that the first brake pad 12 tightly abuts against the serrated disc 16 of the brake seat 10. By locking the first brake pad 12 and the serrated disc 16 of the brake seat 10 through the clamping brake frame 11, the braking of the brake disc 2 is realized.

[0060] In this embodiment, the brake disc 2 further includes a second brake pad 13. The second brake pad 13 is made of metal material. The clamping brake frame 11 is provided with a fixing groove 9, and the second brake pad 13 is fixed in the fixing groove 9. The second brake pad 13 is adapted to the serrated disc 16 of the brake seat 10. By setting the second brake pad 13, the braking stability of the brake disc 2 is further improved, and at the same time, the braking sensitivity is improved.

[0061] In this embodiment, the brake disc 2 further includes a fixing frame 14. The fixing frame 14 is fixed on the brake seat 10. One end of the coiled tube 6 is fixed on the fixing frame 14, and the other end is fixed on the housing 3. A compression spring 15 is sleeved outside the steel wire rope 601 of the coiled tube 6 between the fixing frame 14 and the clamping brake frame 11. By setting the compression spring 15, the steel wire rope 601 in the coiled tube 6 can be adjusted back and forth, with a relaxation and reset function; since the steel wire rope 601 of the coiled tube 6 has been pulling the connecting brake tightening rod, under the action of the compression spring 15, the brake knob part 701 has to pause when passing through each tooth, and each pause is a gear. Each gradient has an obvious tactile gear position, with a good mechanical experience and an obvious mechanical sense of jerk.

[0062] Embodiment 3

[0063] As Figures 13-14The pipeline endoscope shown includes the brake adjustment assembly of Embodiment 2. The pipeline endoscope includes an upper coil 17, a lower coil 18 and a bracket 19; the upper coil 17 is fixed on the bracket 19 through a turntable 20; the lower coil 18 is fixed on the brake seat 10 of the brake disc 2, and the brake disc 2 is fixed on the bracket 19; the upper coil 17 is placed inside the lower coil 18. The turntable 20 is connected to the brake disc 2 through a metal cylinder sleeve 21; a bearing is provided inside the metal cylinder sleeve 21. By setting like this, the metal cylinder sleeve 21, the upper coil 17 and the lower coil 18 are installed on the same axis, and the upper coil 17 and the lower coil 18 rotate independently of each other without affecting each other, while increasing the rotation stability of the upper coil 17 and the lower coil 18. The brake adjuster 1 is fixed on the bracket 19 through a housing 3. By rotating the brake knob cover 704 of the brake adjuster 1, the steel wire rope 601 inside the snake tube 6 can be retracted and released, so as to pull and release the shaft center mechanism that holds the brake disc 2, and even stop the rotation of the coil, realizing the regulation of the wire outlet speed of the lower coil 18.

[0064] The above embodiments of the present invention do not limit the protection scope of the present invention. The implementation manners of the present invention are not limited thereto. All kinds of modifications, substitutions or changes made to the above structure of the present invention according to the above content of the present invention, in accordance with the common general knowledge and conventional means in the art, without departing from the above basic technical idea of the present invention, shall fall within the protection scope of the present invention.

Claims

1. A brake adjustment assembly, comprising a brake adjuster (1), and the brake adjuster (1) includes a housing (3), an adjusting brake tightening rod (4), a connecting brake wire rod (5), a flexible conduit (6) and a brake mechanism (7); The connecting brake wire rod (5) is fixed inside the housing (3), one end of the connecting brake wire rod (5) is fixedly connected to the adjusting brake tightening rod (4), and the other end is fixedly connected to a steel wire rope (601) inside the flexible conduit (6); The brake mechanism (7) is arranged outside the housing (3), and the brake mechanism (7) is in transmission connection with the adjusting brake tightening rod (4), so that the brake mechanism (7) drives the steel wire rope (601) inside the flexible conduit (6) to move through the adjusting brake tightening rod (4) to brake an external wire outlet structure.

2. The brake adjustment assembly according to claim 1, wherein, The brake mechanism (7) includes a brake knob member (701) and a brake slider (702); the brake slider (702) is located above the brake knob member (701), and the brake slider (702) is in contact connection with the brake knob member (701); the brake slider (702) is sleeved outside the adjusting brake tightening rod (4) and limits and fixes the adjusting brake tightening rod (4). By rotating the brake knob member (701), the brake slider (702) is driven to move up and down, so that the adjusting brake tightening rod (4) follows the brake slider (702) to move up and down.

3. The brake adjustment assembly according to claim 2, wherein, The brake slider (702) is provided with a convex portion (7023); the brake knob member (701) includes a tooth portion (7011) and a limiting portion (7012); the tooth portion (7011) of the brake knob member (701) is provided with a plurality of teeth (7014), and the teeth (7014) are sequentially connected in a stepped manner; the tooth portion (7011) of the brake knob member (701) is adapted to the convex portion (7023) of the brake slider (702), and the limiting portion (7012) of the brake knob member (701) limits and fixes the convex portion (7023) of the brake slider (702).

4. The brake adjustment assembly according to claim 3, wherein, The top of the tooth (7014) is arc-shaped, and a certain falling angle is formed at the connection between the teeth (7014), and the falling angle is 100° - 115°.

5. The brake adjustment assembly according to claim 2, wherein The brake mechanism (7) further includes a brake master cylinder guide post member (703), and the brake knob member (701) is sleeved on the brake master cylinder guide post member (703); the brake slider (702) is sleeved on the brake master cylinder guide post member (703).

6. The brake adjustment assembly according to claim 5, wherein, The brake master cylinder guide post member (703) is provided with a guide post (7031), and the brake slider (702) is provided with a guide hole (7022) for the brake master cylinder guide post member (703) to pass through; the brake master cylinder guide post member (703) is provided with a limiting groove (7032), and correspondingly, the brake knob member (701) is provided with a limiting protrusion (7013), and the limiting groove (7032) of the brake master cylinder guide post member (703) cooperates with the limiting protrusion (7013) of the brake knob member (701).

7. The brake adjustment assembly according to any one of claims 2-6, characterized in that, The braking mechanism (7) further includes a brake knob cover (704), which is fixedly connected to the brake knob member (701) and sleeved outside the brake knob member (701).

8. The brake adjustment assembly according to claim 1, wherein It further includes a brake disc (2), which is fixedly connected to the steel wire rope (601) inside the snake tube (6).

9. The brake adjustment assembly according to claim 8, wherein The brake disc (2) includes a brake seat (10), a clamping brake frame (11) and a first brake pad (12); the brake seat (10) is provided with a serrated disc (16), the clamping brake frame (11) is arranged around the serrated disc (16), one end of the clamping brake frame (11) is hinged to the brake seat (10), and the other end is fixedly connected to the steel wire rope (601) inside the snake tube (6); the first brake pad (12) is provided with a serrated portion (7011) that cooperates with the serrated disc (16) of the brake seat (10), and the clamping brake frame (11) is fixedly connected to the first brake pad (12) so that the first brake pad (12) tightly abuts against the serrated disc (16) of the brake seat (10).

10. A pipeline endoscope, comprising the brake adjustment assembly according to any one of claims 1-9.

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