A labor-saving and anti-harness-drop movable harness rack

Abstract

The present invention discloses a labor-saving, anti-harness-dropping mobile harness rack, which relates to the field of harness processing technology and includes a mobile harness rack, on which are mounted a plurality of harness hanging rods that are staggered and obliquely arranged upwards, a wire clamping unit for simultaneously clamping and fixing the harnesses on the plurality of harness hanging rods, and a foot-driven wire clamping power unit for driving the wire clamping unit to perform a labor-saving wire clamping operation by stepping on the foot. The present invention has a reasonable structure, and the mobile harness rack adopts a pneumatic clamping mechanism. For different numbers of harnesses hung on a single harness hanging rod, its arc-shaped movable rod can stably squeeze and fix them, and the squeezing plate is driven to move by stepping on the foot. This driving method is convenient and labor-saving, and is further labor-saving when combined with the provided lever mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of wire harness processing, and in particular to a labor-saving and wire harness-drop-proof movable wire harness rack. Background Art

[0002] Wiring harnesses are essential for electrical equipment, including vehicles, household appliances, and factory machinery. With the development of new energy vehicles, they are widely used in this field. Existing wiring harnesses are primarily composed of insulating sheaths, terminal blocks, wires, and insulating wrapping materials.

[0003] When the mobile harness is moved, the vibration generated during the movement often causes the harness that is not hung in place to fall down (that is, when the inverted U-shaped suspension is performed, the position of the harness support point is incorrect, resulting in inconsistent weights of the two vertical parts of the harness, which is easily caused by the vibration to slide down and fall off, which is the main reason). Personnel need to hang the fallen harness on the harness rod again, and sometimes even the harness on the same harness hanging rod needs to be hung multiple times, which is especially labor-intensive for longer transportation distances. Therefore, the present application provides a labor-saving and anti-harness falling mobile harness rack to meet the needs. Summary of the Invention

[0004] The purpose of the present application is to provide a labor-saving and anti-harness-dropping movable harness rack, so as to solve the problem that the harness is easily slipped when the movable harness rack is moved.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a labor-saving, anti-wiring harness falling type mobile wiring harness rack, comprising a mobile wiring harness rack, on which are installed several wiring harness hanging rods that are staggered and arranged obliquely upward, and a wire clamping unit for simultaneously clamping and fixing the wiring harnesses on several of the wiring harness hanging rods; a foot-driven wire clamping power unit, which drives the wire clamping unit by stepping on it to perform a labor-saving wire clamping operation.

[0006] Preferably, the wire clamping unit includes an arc-shaped fixed rod fixedly arranged in the through-cavity of several wiring harness hanging rods and an arc-shaped movable rod rotatably arranged below several through-cavities through a rotating shaft, the rotation point of the arc-shaped movable rod is located below the lower end of the arc-shaped fixed rod and is laterally separated by a distance, a gear is fixedly sleeved on the rotating shaft, and the gear is gear-engaged with a toothed plate located in the through-cavity, the toothed plate is fixedly connected to the output end of the pneumatic telescopic rod fixed in the through-cavity, the left ends of several pneumatic telescopic rods on the same side are connected to the main air pipe fixedly arranged on the mobile wiring harness rack on the same side through a branch air pipe, the arc-shaped fixed rod is provided with an arc-shaped opening for facilitating the passage of the arc-shaped movable rod, and the arc-shaped movable rod is provided with a notch for facilitating the passage of the toothed plate;

[0007] The pedal down lever of the described support frame is fixed with the support frame, and the lower end of the pedal down lever is connected with the pedal down lever of the described support frame by the spring.

[0008] Preferably, the locking member includes a mounting ring fixedly arranged in the inner cavity of the mounting cylinder and a rotating shaft rotatably arranged in the inner cavity of the mounting cylinder, the mounting ring is rotatably provided with a ratchet ring, and a plurality of driving teeth are circumferentially provided on the upper end surface of the ratchet ring, and driving gears are fixed at both ends of the rotating shaft, and the two driving gears are respectively engaged with the rack and the driving teeth, the upper end of the rack is fixedly connected to the lower end of the extrusion plate, and a pawl is rotatably provided on the mounting ring through the rotating shaft, and the pawl is connected to the fixed block fixed to the mounting ring bobbin through a reset spring, and the upper end of the rotating shaft is fixed with a push rod passing through the mounting cylinder.

[0009] Preferably, a power-assisting unit is further included to assist the extrusion plate in performing the upward movement.

[0010] Preferably, the power-assisting unit includes a permanent magnet, which is fixedly arranged on the top of the inner cavity of the mounting cylinder and sleeved on the periphery of the column.

[0011] Preferably, the power assist unit includes two permanent magnets, which are respectively fixed on the top of the inner cavity of the mounting cylinder and the extrusion plate. The two permanent magnets are both sleeved on the periphery of the column, and the opposite end magnetic poles of the two permanent magnets are opposite.

[0012] Preferably, the permanent magnet is wrapped in a protective ring of an annular structure, and the protective ring is made of aerogel material.

[0013] Preferably, when the annular airbag is squeezed by the squeezing plate that is performing an upward movement, the outer ring wall of the annular airbag never contacts the inner wall of the mounting tube and the power-assisting unit.

[0014] Preferably, the bottom of the mounting tube and the bottom of the U-shaped plate are both provided with movable feet.

[0015] In summary, the technical effects and advantages of the present invention are:

[0016] The present invention has a reasonable structure. The mobile harness rack adopts a pneumatic clamping mechanism. When different numbers of harnesses are hung on a single harness hanging rod, the arc-shaped movable rod can stably squeeze and fix them. The squeezing plate is driven by stepping on the pedals. This driving method is convenient and labor-saving. At the same time, the lever mechanism provided can further save labor.

[0017] In the present invention, a locking member is provided which is composed of a ratchet ring, a pawl, a rotating rod with a driving gear, a spring, a rack and a push rod. The locking member can automatically limit the extrusion plate and facilitate the release of the limit lock operation.

[0018] The present invention further includes a power assist unit, which can be composed of one or two permanent magnets arranged opposite to each other, generating a magnetic attraction on the extrusion plate, which can assist the extrusion plate in moving upward, thus saving effort and reducing the labor intensity of the operator;

[0019] In the present invention, the outer ring wall of the annular airbag never contacts the inner wall of the mounting tube and the power-assisting unit, thereby preventing friction resistance from being generated during contact and avoiding increasing the labor intensity of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2For the present invention Figure 1 Schematic diagram of the partially enlarged structure;

[0023] Figure 3 For the present invention Figure 2 A in the middle is an enlarged structural diagram;

[0024] Figure 4 For the present invention Figure 2 Schematic diagram of the structure of the middle foot dynamic clamping power unit;

[0025] Figure 5 For the present invention Figure 4 Schematic diagram of the internal structure of the middle installation cylinder;

[0026] Figure 6 For the present invention Figure 5 Schematic diagram of the structure of the middle ratchet ring from a top view;

[0027] Figure 7 For the present invention Figure 1 Schematic diagram of the center clamp unit structure;

[0028] Figure 8 For the present invention Figure 7 Schematic diagram of the partial cross-section structure of the center harness hanging rod;

[0029] Figure 9 For the present invention Figure 1 Schematic diagram of the partial upward structure of the mobile harness rack;

[0030] Figure 10 This is a schematic diagram of the positions of the two arc-shaped movable rods of the present invention when their rotation points are set at different positions and rotated at the same angle.

[0031] Figure: 1, mobile harness rack; 2, harness hanging rod; 21, through cavity; 3, wire clamping unit; 31, arc-shaped fixed rod; 32, arc-shaped movable rod; 33, arc-shaped opening; 34, gear; 35, tooth plate; 36, pneumatic telescopic rod; 37, branch air pipe; 38, main air pipe; 39, notch; 4, foot-operated wire clamping power unit; 41, mounting cylinder; 42, lever arm; 43, first pull rope; 44, Movable block; 45. Second pull rope; 46. Foot plate; 47. Rack; 48. U-shaped plate; 49. Extrusion plate; 410. Column; 411. Annular airbag; 412. Ratchet ring; 413. Rotating shaft; 414. Drive tooth; 415. Drive gear; 416. Spring; 417. Ratchet; 418. Push rod; 419. Mounting ring; 420. Fixed block; 5. Permanent magnet; 6. Protective ring. Implementation Method

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0033] Example: Reference Figure 1-3 The illustrated embodiment is a labor-saving, anti-harness-dropping mobile harness rack, comprising a mobile harness rack 1, on which are mounted a plurality of harness hanging rods 2 that are staggered and arranged obliquely upward, and a wire clamping unit 3 for simultaneously clamping and fixing the harnesses on the plurality of harness hanging rods 2; and a foot-operated wire clamping power unit 4, which drives the wire clamping unit 3 by stepping on the foot to perform a labor-saving wire clamping operation.

[0034] As a preferred implementation in this embodiment, Figure 4-9 As shown, the wire clamping unit 3 includes an arc-shaped fixed rod 31 fixedly arranged in the inner cavity 21 of the plurality of wiring harness hanging rods 2 and an arc-shaped movable rod 32 rotatably arranged below the plurality of wiring harness hanging rods 21 through a rotating shaft. The rotating point of the arc-shaped movable rod 32 is located below the lower end of the arc-shaped fixed rod 31 and is laterally separated by a distance. A gear 34 is fixedly sleeved on the rotating shaft, and the gear 34 is gear-engaged with a toothed plate 35 located in the through cavity 21. The toothed plate 35 is fixedly connected to the output end of a pneumatic telescopic rod 36 fixed in the inner cavity of the through cavity 21. The left ends of the plurality of pneumatic telescopic rods 36 on the same side are connected to the main air pipe 38 fixed on the same side of the movable wiring harness rack 1 through a branch air pipe 37. An arc-shaped opening 33 is provided on the arc-shaped fixed rod 31 for facilitating the passage of the arc-shaped movable rod 32, and a notch 39 is provided on the arc-shaped movable rod 32 for facilitating the passage of the toothed plate 35. The foot-driven wire clamping power unit 4 includes a The mounting tube 41 on the bundle frame 1 has an annular airbag 411 fixed on the top of the inner cavity of the mounting tube 41. The air inlet ends of the two main air pipes 38 pass through the mounting tube 41 and are connected to the annular airbag 411. An extrusion plate 49 is slidably provided below the annular airbag 411, and a column 410 with an upper end passing through the mounting tube 41 is fixedly provided at the axis center of the extrusion plate 49. The upper end of the column 410 is fixedly connected to the rear end of the force arm 42 through a first pull rope 43. The force arm 42 is rotatably set on the mounting tube 41 through a rotating shaft. The rotating shaft is set at the rear part of the force arm 42 to form a labor-saving lever. Two sliding blocks 44 are rotatably fixed on the front end of the force arm 42, and the lower ends of the two movable blocks 44 are connected to the foot plate 46 through a second pull rope 45. The foot plate 46 is vertically slidably set in the inner cavity of the U-shaped plate 48 fixed on the outer wall of the mounting tube 41, and also includes a locking member for positioning the rising height of the extrusion plate 49.

[0035] Before moving, the foot plate 46 is positioned as follows Figure 4As shown, at this time, the extrusion plate 49 is as shown in FIG. Figure 5 As shown, the operator can place his foot on the footboard 46 and press it, so that the footboard 46 can move downward, and the force arm 42 can be rotated around its rotating axis through the second pull rope 45, thereby driving the column 410 to move upward through the first pull rope 43, and the column 410 drives the extrusion plate 49 to move upward to squeeze the annular airbag 411, and the gas in the annular airbag 411 can be transported to the multiple pneumatic telescopic rods 36 through the two main air pipes 38 and the multiple branch air pipes 37, thereby driving the movable ends of the multiple pneumatic telescopic rods 36 to extend outward, and then the tooth plate 35 drives the gear 34 to rotate, and the gear 34 can drive the arc-shaped movable rod 32 to rotate, and the arc-shaped movable rod 32 can pass through the arc opening to move the wiring harness on the wiring harness hanging rod 2. The wire harness is squeezed and fixed, and the position of the squeezing plate 49 is limited by the locking part, so that the wire harness can be firmly fixed. At this time, the mobile wire harness rack 1 can be pushed to move without worrying about the wire harness on it slipping during transportation, which can reduce unnecessary workload. The mobile wire harness rack 1 adopts a pneumatic clamping mechanism. For different numbers of wire harnesses hanging on a single wire harness hanging rod 2, its arc-shaped movable rod 32 can stably squeeze and fix them (and can distribute the force to avoid the single arc-shaped movable rod 32 from being subjected to excessive squeezing force and causing bending and deformation, and at the same time ensure the consistency of the fixation of the wire harness). The squeezing plate 49 is driven to move by stepping on it. This driving method is convenient and labor-saving, and is further labor-saving when combined with the provided lever mechanism.

[0036] It should be noted that, first, the inner cavity of the annular airbag 411 is filled with an inert gas, such as nitrogen; second, when the tooth plate 35 moves laterally, in order to prevent the laterally moving tooth plate 35 from contacting the rotating arc-shaped movable rod 32, a notch 39 is provided to prevent the tooth plate 35 from contacting the arc-shaped movable rod 32; third, when stepping on the foot, one foot can step on the footboard 46 with the other foot suspended in the air, so that the weight of the human body acts on the footboard 46 through the single foot, which can ensure that a large force is formed between the arc-shaped movable rod 32 and the wiring harness to ensure good stability of the wiring harness extrusion and fixation, and it is very labor-saving. When the footboard 46 is subjected to force, it moves vertically downward, which is conducive to ensuring good body stability when the human body is suspended in the air. Good stability; Fourth, the rotation point of the arc-shaped movable rod 32 is located below the lower end of the arc-shaped fixed rod 31 and is laterally separated by a distance, the purpose of which is: First, the lateral separation can increase the hanging range of the wiring harness along the wiring harness hanging rod 2; Second, the rotation point of the arc-shaped movable rod 32 is located below the lower end of the arc-shaped fixed rod 31 (that is, the former), when the rotation point of the arc-shaped movable rod 32 and the fixed point of the lower end of the arc-shaped fixed rod 31 are at the same height relative to the wiring harness hanging rod 2 (that is, the latter), when rotated by the same angle, the accommodation space enclosed by the former arc-shaped movable rod 32, the arc-shaped fixed rod 31, and the wiring harness hanging rod 2 is smaller than the accommodation space enclosed by the latter arc-shaped movable rod 32, the arc-shaped fixed rod 31, and the wiring harness hanging rod 2 (such as Figure 10As shown), that is, when the same number of wire harnesses (the number of wire harnesses is constant, that is, the space required to accommodate the wire harnesses is constant) are squeezed and fixed, the former can reduce the telescopic distance of the telescopic rod 36 during clamping. Since the telescopic rod 36 is pneumatic, reducing its telescopic distance means reducing the degree of deformation of the annular airbag 411. As the degree of deformation of the shrinking annular airbag 411 is reduced, the elastic deformation resistance of the annular airbag 411 suffered by the personnel is reduced, and the force applied by the operator is correspondingly reduced, and the former is more labor-saving; at the same time, this arrangement can avoid excessive movement of wire harnesses due to squeezing during clamping, and can reduce the risk of the wire harnesses slipping off the wire harness hanging rod 21 during clamping. The arc-shaped fixed rod 31 is fixedly arranged, and the arc-shaped movable rod 32 is rotatable, which can avoid the wire harnesses on the wire harness hanging rod 2 from moving too much and falling off when the two rotate simultaneously to squeeze and clamp the wire harness, further reducing the risk of the wire harnesses slipping.

[0037] As a preferred implementation in this embodiment, Figure 5 and Figure 6 As shown, the locking member includes a mounting ring 419 fixedly arranged in the inner cavity of the mounting cylinder 41 and a rotating shaft 413 rotatably arranged in the inner cavity of the mounting cylinder 41; the mounting ring 419 is rotatably provided with a ratchet ring 412, and a plurality of driving teeth 414 are circumferentially provided on the upper end surface of the ratchet ring 412; driving gears 415 are fixed at both ends of the rotating shaft 413; the two driving gears 415 are respectively engaged with the rack 422 and the driving teeth 414; the upper end of the rack 422 is fixedly connected to the lower end of the extrusion plate 49; a pawl 417 is rotatably provided on the mounting ring 419; the pawl 417 is connected to the fixed block 420 of the bobbin fixed to the mounting ring 419 through a reset spring 421; the upper end of the rotating shaft is fixed with a push rod 418 which passes through the mounting cylinder 41; when the extrusion plate 49 moves upward, the rotating shaft 413 is driven to rotate by the rack 47 provided at its bottom When the lever 418 is in the locked position, the pawl 417 is released and the lever 419 is in the locked position.

[0038] As a preferred implementation in this embodiment, Figure 5As shown, a power-assisting unit is also included to assist the extrusion plate 49 in ascending movement, thereby saving effort and reducing the labor intensity of the operator.

[0039] In this embodiment, if Figure 5 As shown, the power unit includes a permanent magnet 5, which is fixed on the top of the inner cavity of the mounting cylinder 41 and is sleeved on the periphery of the column 410. At the beginning, the position of the extrusion plate 49 is as shown in FIG. Figure 5 As shown, the extrusion plate 49 is made of metal material, and the permanent magnet 5 has an absorbing effect on the extrusion plate 49. When the extrusion plate 49 moves upward, the magnetic attraction of the permanent magnet 5 becomes increasingly stronger, which can assist the extrusion plate 49 to move upward, play a labor-saving role, and further reduce the labor intensity of the operator.

[0040] It should be noted that the mounting tube 41 is made of magnetic isolation material.

[0041] In this embodiment, if Figure 5 As shown, the power assist unit 5 includes two permanent magnets 5, which are respectively fixed on the top of the inner cavity of the mounting cylinder 41 and the extrusion plate 49. The two permanent magnets 5 are both sleeved on the periphery of the column 410. The magnetic poles of the opposite ends of the two permanent magnets 5 are opposite. Compared with a permanent magnet 5 of the same specification, the use of two permanent magnets 5 of the same specification and arranged oppositely can generate stronger magnetic force and better power assist effect, and the setting of the two permanent magnets 5 can further extend the magnetic assist distance.

[0042] It should be noted that the mounting tube 41 is made of magnetic isolation material.

[0043] As a preferred implementation in this embodiment, Figure 5 As shown, the permanent magnet 5 is wrapped in a protective ring 6 of an annular structure, and the protective ring 6 is made of aerogel material. The protective ring 6 of the aerogel material has a good heat insulation effect, which can isolate high temperatures up to 1200° and prevent the permanent magnet 5 from being demagnetized at high temperatures.

[0044] As a preferred implementation in this embodiment, Figure 5 As shown, when the annular airbag 411 is squeezed by the extrusion plate 49 that is performing an upward movement, the outer ring wall of the annular airbag 411 never contacts the inner wall of the mounting tube 41 and the power-assisting unit, that is, a gap is provided between the annular airbag 411 and the extrusion plate 49 and the power-assisting unit, which can prevent friction resistance from being generated during contact and avoid increasing the labor intensity of the operator.

[0045] As a preferred implementation in this embodiment, Figure 1 As shown, the bottom of the mounting cylinder 41 and the U-shaped plate 48 are provided with movable feet, which support the mounting cylinder 41 and the U-shaped plate 48 to prevent the movable wire harness bracket 1 from being damaged due to excessive pressure.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A labor-saving anti-harness drop type mobile harness rack, comprising a mobile harness rack (1), wherein a plurality of harness hanging rods (2) arranged in an interlaced manner and obliquely upward are installed on the mobile harness rack (1), characterized in that: It also includes a wire clamping unit (3) for simultaneously clamping and fixing the wire harnesses on a plurality of the wire harness hanging rods (2); a foot-operated wire clamping power unit (4) for driving the wire clamping unit (3) by stepping on the foot to perform a labor-saving wire clamping operation; The wire clamping unit (3) comprises an arc-shaped fixed rod (31) fixedly arranged in the inner cavity (21) of a plurality of the harness hanging rods (2) and an arc-shaped movable rod (32) rotatably arranged below the plurality of the through cavities (21) via a rotating shaft, wherein the rotating point of the arc-shaped movable rod (32) is located below the lower end of the arc-shaped fixed rod (31) and is laterally spaced a distance apart, a gear (34) is fixedly sleeved on the rotating shaft, and the gear (34) is tooth-connected with a tooth plate (35) located in the through cavity (21), and the The tooth plate (35) is fixedly connected to the output end of the pneumatic telescopic rod (36) fixed to the inner cavity of the through cavity (21); the left ends of several pneumatic telescopic rods (36) on the same side are connected to the main air pipe (38) fixed on the same side on the movable harness frame (1) through the branch air pipe (37); the arc-shaped fixed rod (31) is provided with an arc-shaped opening (33) for facilitating the passage of the arc-shaped movable rod (32); and the arc-shaped movable rod (32) is provided with a notch (39) for facilitating the passage of the tooth plate (35); The foot-operated wire clamp power unit (4) includes a mounting tube (41) fixedly mounted on the movable wire harness frame (1), an annular air bag (411) is fixed to the top of the inner cavity of the mounting tube (41), the air inlet ends of the two main air pipes (38) pass through the mounting tube (41) and are connected to the annular air bag (411), an extrusion plate (49) is slidably arranged below the annular air bag (411), and a column (410) with an upper end passing through the mounting tube (41) is fixedly arranged at the axis of the extrusion plate (49), the upper end of the column (410) is fixed to the first pull rope (43) and the The rear end of the force arm (42) is connected, the force arm (42) is rotatably arranged on the installation cylinder (41) through a rotating shaft, the rotating shaft is arranged at the rear of the force arm (42), forming a force-saving lever, the front end of the force arm (42) is fixed with two movable blocks (44) rotatably arranged, and the lower ends of the two movable blocks (44) are connected to the foot plate (46) through a second pull rope (45), the foot plate (46) is vertically slidably arranged in the inner cavity of the U-shaped plate (48) fixedly arranged on the outer wall of the installation cylinder (41), and also includes a locking member for positioning the rising height of the extrusion plate (49); The rotation point of the arc-shaped movable rod (32) is located below the lower end of the arc-shaped fixed rod (31) and is spaced apart therefrom laterally.

2. The labor-saving, anti-harness-drop movable harness rack according to claim 1, characterized in that: The locking member includes a mounting ring (419) fixedly arranged in the inner cavity of the mounting cylinder (41) and a rotating shaft (413) rotatably arranged in the inner cavity of the mounting cylinder (41), the mounting ring (419) is rotatably provided with a ratchet ring (412), and a plurality of driving teeth (414) are circumferentially provided on the upper end surface of the ratchet ring (412), and driving gears (415) are fixed at both ends of the rotating shaft (413), and the two driving gears (415) are respectively engaged with the rack (47) and the driving teeth (414), and the upper end of the rack (47) is fixedly connected to the lower end of the extrusion plate (49), and a pawl (417) is rotatably provided on the mounting ring (419), and the pawl (417) is connected to a fixed block (420) fixed on the mounting ring (419) through a spring (416), and the upper end of the rotating shaft is fixed to a push rod (418) that passes through the mounting cylinder (41).

3. The labor-saving, anti-harness-drop movable harness rack according to claim 1, characterized in that: It also includes a power-assisting unit for assisting the extrusion plate (49) in performing an upward movement.

4. The labor-saving, anti-harness-drop movable harness rack according to claim 3 is characterized in that: The power-assisting unit comprises a permanent magnet (5), which is fixedly arranged on the top of the inner cavity of the mounting cylinder (41) and sleeved on the periphery of the column (410).

5. The labor-saving, anti-harness-drop movable harness rack according to claim 3 is characterized in that: The power assist unit comprises two permanent magnets (5), the two permanent magnets (5) being fixed on the top of the inner cavity of the mounting cylinder (41) and the extrusion plate (49), respectively. The two permanent magnets (5) are both sleeved on the periphery of the column (410), and the magnetic poles of the opposite ends of the two permanent magnets (5) are opposite.

6. The labor-saving, anti-harness-dropping movable harness rack according to claim 4 or 5, characterized in that: The permanent magnet (5) is wrapped in a protective ring (6) of an annular structure, and the protective ring (6) is made of aerogel material.

7. The labor-saving, anti-harness-drop movable harness rack according to claim 3, characterized in that: When the annular airbag (411) is squeezed by the squeezing plate (49) that is performing an upward movement, the outer ring wall of the annular airbag (411) never contacts the inner wall of the mounting cylinder (41) and the power-assisting unit.

8. The labor-saving, anti-harness-drop movable harness rack according to claim 1, characterized in that: The bottoms of the mounting cylinder (41) and the U-shaped plate (48) are both provided with movable casters.

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