Multifunctional trainer

Abstract

The utility model discloses a multifunctional trainer which is characterized in that a bracket main body comprises two side brackets which are symmetrically arranged, and each side bracket is provided with a vertical beam and a fixed beam; the support body is provided with a deep squat accessory used for performing deep squat exercise, a parallel bar support used for performing pull-up exercise, a gun carriage used for exercising arm and back muscles, a pedal assembly, a long and short safety frame assembly and a leg exercise accessory. According to the multifunctional training device, more exercise items can be achieved, the functions of the training device are enriched, exercise is diversified, different requirements and combined exercise of a user are met, meanwhile, safety and attractiveness are taken into consideration through the design, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, in particular to a multifunctional training device. Background Art

[0002] The functions of the traditional bird trainer are relatively simple. It can only perform basic projects such as bird flying training and butterfly chest press through the cooperation between the counterweight assembly, the sliding assembly and the wire rope, and cannot meet the user's more fitness needs. Therefore, the present application improves the structure of the traditional bird trainer so that it can train more projects and realize the exercise of different needs and combinations of users. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a multifunctional training device.

[0004] The utility model provides a multifunctional training device, comprising a bracket main body, on which a counterweight mechanism, a pulley group mechanism and a steel wire rope for realizing bird flying training are arranged; the bracket main body comprises two symmetrically arranged side brackets, on which vertical beams and fixed beams parallel to each other are fixedly arranged; the bracket main body is provided with a squat attachment for performing squat exercises; the fixed beam is provided with a parallel bar bracket for performing pull-up exercises; a gun mount for exercising arm and back muscles is arranged at the front end of a ground beam of one of the side brackets, and a foldable foot pedal assembly is arranged at the front end of the ground beam of the other side bracket, which is used to cooperate with the counterweight mechanism, the pulley group mechanism and the steel wire rope to realize a rowing exercise project; long and short safety frame assemblies are arranged on the two fixed beams; and a leg exercise attachment is arranged on the fixed beam.

[0005] Preferably, the fixed beam is configured as a square column, and a plurality of mounting through holes are evenly arranged on the front and rear wall surfaces of the fixed beam along the height direction thereof.

[0006] Preferably, the squat attachment includes a guide column, a shock absorbing assembly, a sliding assembly, a weight rack and a safety assembly; wherein,

[0007] The guide column is fixedly arranged on the inner side of the side bracket, between the vertical beam and the fixed beam, and arranged in a vertical direction;

[0008] The shock absorbing assembly comprises a fixed sleeve fixedly sleeved on the lower part of the guide column, a circular fixed baffle fixedly arranged at the top end of the fixed sleeve and sleeved on the outer side of the guide column, a shock absorbing spring is arranged on the top surface of the fixed baffle and sleeved on the outer side of the guide column; a sliding baffle is fixedly arranged on the top end of the shock absorbing spring, the sliding baffle is slidably sleeved on the outer side of the guide column, a conical shock absorbing pad is fixedly arranged on the top surface of the sliding baffle, and the conical shock absorbing pad is slidably sleeved on the outer side of the guide column;

[0009] The sliding assembly comprises a sliding sleeve slidably sleeved on the outer wall surface of the guide column, and the sliding sleeve is arranged above the conical shock-absorbing pad;

[0010] The load-bearing rod is fixedly arranged in a horizontal direction between the two sliding sleeves;

[0011] The safety component includes a lever, a safety frame plate and a safety hook plate; the lever is fixedly arranged on two opposite wall surfaces of the two vertical beams, and a plurality of levers are evenly arranged along the height direction of the vertical beams; one side of the safety frame plate is arranged to be used for hooking on the corresponding lever, and the other side is rotatably arranged on the fixed sleeve; one side of the safety hook plate is arranged to be used for hooking on the corresponding lever, and the other side is rotatably arranged on the frame weight rod.

[0012] Preferably, two parallel bar brackets are provided, and the two parallel bar brackets are symmetrically arranged on the two fixed beams respectively; the parallel bar bracket includes a U-shaped frame, a support rod is fixedly provided on the bottom surface of the U-shaped frame, and a handle perpendicular to the support rod is fixedly provided on the wall surface of the support rod; a through hole is provided on the U-shaped frame, and the U-shaped frame is fixed to the corresponding fixed beam by a limiting pin shaft passing through the through hole and the installation through hole.

[0013] Preferably, the gun mount includes a ground beam tube fixedly arranged on the top surface of the front end of the ground beam of one of the side brackets, a rotating shaft is rotatably arranged passing through the interior of the ground beam tube, a square tube is fixedly arranged on the rotating shaft, a U-shaped connecting frame is rotatably arranged on the outer side of the square tube away from the rotating shaft, and a gun mount tube is fixedly arranged on the side of the U-shaped connecting frame away from the square tube.

[0014] Preferably, the long and short safety frame assembly includes a group of long safety frames and a group of short safety frames; two of the long safety frames and two of the short safety frames are provided, each of which is fixed on the two fixed beams respectively, and is used for safely placing the barbell before or during lifting.

[0015] Preferably, the leg press frame assembly is detachably arranged on one of the long safety frames.

[0016] Preferably, the foot pedal assembly includes a fixing pin symmetrically fixed on the front end side of the ground beam on one of the side brackets, an axle tube is rotatably provided on the fixing pin, and foot pedals are fixedly provided on the two axle tubes; a limiting tube is fixedly provided on the top surface of the front end of the ground beam on the corresponding side bracket corresponding to the foot pedal.

[0017] Preferably, the leg exercise accessory includes a fixed rod and a rotating rod assembly; the fixed rod is detachably fixed on one of the fixed beams; the rotating rod assembly includes a U-shaped mounting frame detachably fixed on the corresponding fixed beam, a connecting rod is rotatably provided on the U-shaped mounting frame, a rotating rod parallel to the fixed rod is fixedly provided at one end of the connecting rod away from the U-shaped mounting frame; a counterweight rod for adding counterweight is fixedly provided on a side surface of the connecting rod away from the rotating rod.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The multifunctional trainer of the utility model can realize more exercise items by adding squat accessories, parallel bar brackets, gun racks, foot pedal assemblies, long and short safety frame assemblies, leg exercise accessories and other structural components on the side brackets, enriching the functions of the trainer, making the exercises more diversified, and realizing exercises with different needs and combinations of users. At the same time, the design also takes into account safety and aesthetics, and is highly practical.

[0020] It should be understood that the contents described in the summary of the utility model are not intended to limit the key or important features of the embodiments of the utility model, nor are they intended to limit the scope of the utility model.

[0021] Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 A schematic diagram of the structure of a multifunctional training device provided by an embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the squat attachment;

[0025] Figure 3 It is an enlarged structural diagram of the installation part of the squat attachment;

[0026] Figure 4It is a schematic diagram of the structure after the leg exercise attachment, long safety frame and leg press frame assembly are installed;

[0027] Figure 5 This is a schematic diagram of the gun carriage structure;

[0028] Figure 6 It is a structural schematic diagram of a long safety frame;

[0029] Figure 7 It is a schematic diagram of the structure after the long safety frame and the leg press frame assembly are assembled and installed;

[0030] Figure 8 It is a structural schematic diagram of a parallel bar support;

[0031] Fig. 9 is a structural schematic diagram of a foot pedal assembly;

[0032] Numbers in the figure: 1, bracket body; 101, side bracket; 1011, vertical beam; 1012, fixed beam; 1013, installation through hole; 102, back bracket; 103, top bracket;

[0033] 2. Counterweight mechanism; 3. Sliding group mechanism;

[0034] 4. Squat accessories; 41. Guide column; 42. Fixed sleeve; 43. Fixed baffle; 44. Shock-absorbing spring; 45. Sliding baffle; 46. Conical shock-absorbing pad; 47. Sliding sleeve; 48. Weight bar; 49. Shift bar; 410. Mounting plate; 411. Safety hook plate;

[0035] 5. Parallel bar bracket; 51. L-shaped plate; 52. Fixed plate; 53. Through hole; 54. Limit pin; 55. Support rod; 56. Handle;

[0036] 6. Gun carriage; 61. Ground beam tube; 62. Rotating shaft; 63. Square tube; 64. U-shaped connecting frame; 65. Gun carriage tube;

[0037] 7. Foot pedal assembly; 71. Fixing pin; 72. Axle tube; 73. Foot pedal; 74. Limiting tube;

[0038] 8. Long safety frame; 9. Short safety frame; 10. Leg press frame assembly;

[0039] 11. Leg exercise attachment; 111. Fixed rod; 112. U-shaped connecting frame; 113. Connecting rod; 114. Rotating rod; 115. Counterweight rod. DETAILED DESCRIPTION

[0040] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings.

[0041] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] Please refer to Figures 1 to 9 An embodiment of the utility model provides a multifunctional training device, including a bracket body 1, on which a weight mechanism 2, a pulley group mechanism 3 and a steel wire rope for realizing bird flying training are arranged, and the weight mechanism 2, the pulley group mechanism 3 and the steel wire rope are arranged in two groups, which are symmetrically arranged on the bracket body 1.

[0043] The bracket body 1 includes two symmetrically arranged side brackets 101, a back bracket 102 is fixedly arranged on one side of the two side brackets 101, and a top bracket 103 is fixedly arranged on the top surface of the side bracket 101. The side brackets 101, the back bracket 102 and the top bracket 103 together constitute a frame-type bracket body 1; the side brackets 101 are fixedly provided with vertical beams 1011 and fixed beams 1012 which are parallel to each other; wherein the vertical beams 1011 and the fixed beams 1012 are both arranged in the vertical direction for supporting and fixing various structural components; in addition, the fixed beam 1012 is arranged as a square column, and a plurality of mounting through holes 1013 are evenly arranged on the front and rear wall surfaces of the fixed beam 1012 along its height direction.

[0044] The support body 1 is provided with a squat attachment 4 for performing squat exercises;

[0045] In a preferred embodiment, the squat attachment 4 includes a guide column 41, a shock absorbing assembly, a sliding assembly, a weight rack 48 and a safety assembly; wherein,

[0046] The guide column 41 is fixedly arranged on the inner side of the side bracket 101 between the vertical beam 1011 and the fixed beam 1012, and is arranged in a vertical direction. The guide column 41 is used to support and fix other structural components of the squat attachment, and also plays a role in guiding the frame weight rod 48 and the sliding assembly up and down;

[0047] The shock absorbing assembly includes a fixed sleeve 42 fixedly sleeved on the lower part of the guide column 41, a circular fixed baffle 43 fixedly provided at the top of the fixed sleeve 42 and sleeved on the outer side of the guide column 41, and a shock absorbing spring 44 is provided on the top surface of the fixed baffle 43 and sleeved on the outer side of the guide column 41; a sliding baffle 45 is fixedly provided on the top of the shock absorbing spring 44, and the sliding baffle 45 is slidably sleeved on the outer side of the guide column 41, and a conical shock absorbing pad 46 is fixedly provided on the top surface of the sliding baffle 45, and the conical shock absorbing pad 46 is slidably sleeved on the outer side of the guide column 41;

[0048] The sliding assembly includes a sliding sleeve 47 slidably sleeved on the outer wall of the guide column 41, and the sliding sleeve 47 is arranged above the conical shock-absorbing pad 46; wherein a linear bearing cooperating with the guide column 41 is arranged on the inner side of the sliding sleeve 47 to increase the stability of the sliding sleeve 47 when sliding up and down on the guide column 41;

[0049] The load-bearing rod 48 is fixedly arranged in the horizontal direction between the two sliding sleeves 47; wherein, both ends of the load-bearing rod 48 are fixed between the two sliding sleeves 47 by two connecting plates and a bolt assembly, one connecting plate is fixedly connected to the load-bearing rod 48, and the other connecting plate is fixedly connected to the sliding sleeve 47, and then the two connecting plates are fixedly connected by the bolt assembly, thereby realizing the detachable function of the load-bearing rod 48.

[0050] The safety component includes a gear lever 49, a safety frame plate 410 and a safety hook plate 411; the gear lever 49 is fixedly arranged on two opposite wall surfaces of the two vertical beams 1011, and a plurality of gear levers 49 are evenly arranged along the height direction of the vertical beams 1011; one side of the safety frame plate 410 is arranged to be used for hooking on the corresponding gear lever 49, and the other side is rotatably arranged on the fixed sleeve 42; one side of the safety hook plate 411 is arranged to be used for hooking on the corresponding gear lever 49, and the other side is rotatably arranged on the frame weight rod 48; wherein, the connection between the safety frame plate 410 and the safety hook plate 411 and the corresponding sliding sleeve 47 and the frame weight rod 48 is a gap connection, and a certain force is required to rotate the safety frame plate 410 and the safety hook plate 411, so as to avoid the safety frame plate 410 and the safety hook plate 411 from rotating too flexibly and affecting the exercise process.

[0051] When performing squat exercises, the safety hook plate 411 is rotated away from the gear lever 49 to disengage from the gear lever 49, and then the weight rack 48 is carried on the shoulders to perform squat exercises; both ends of the weight rack 48 are set as hanging tubes, and counterweights can be added thereto to increase the intensity of the squat exercise.

[0052] The fixed beam 1012 is provided with a parallel bar support 5 for performing pull-up exercises;

[0053] In a preferred embodiment, two parallel bar brackets 5 are provided, and the two parallel bar brackets 5 are symmetrically arranged on two fixed beams 1012 respectively; the parallel bar bracket 5 includes a U-shaped frame, and the U-shaped frame is composed of an L-shaped plate 51 and a fixed plate 52; a support rod 55 is fixedly provided on the bottom surface of the U-shaped frame, and a handle 56 perpendicular to the support rod 55 is fixedly provided on the wall surface of the support rod 55; a through hole 53 is provided on the fixed plate 52 of the U-shaped frame, and the U-shaped frame is fixed to the corresponding fixed beam 1012 by a limit pin shaft 54 ​​passing through the through hole 53 and the installation through hole 1013.

[0054] A gun carriage 6 for exercising arm and back muscles is disposed at the front end of the ground beam of one side bracket 101, and a foldable foot pedal assembly 7 is disposed at the front end of the ground beam of the other side bracket 101 for cooperating with the counterweight mechanism 2, the pulley mechanism 3 and the wire rope to realize the rowing exercise project;

[0055] In a preferred embodiment, the gun mount 6 includes a ground beam tube 61 fixedly arranged on the top surface of the front end of the ground beam of a side bracket 101, and a rotating shaft 62 is rotatably arranged through the inside of the ground beam tube 61, and one end of the rotating shaft 62 is limited and fixed by a fixing pin to prevent the rotating shaft 62 from escaping from the ground beam tube 61; a square tube 63 is fixedly arranged on the rotating shaft 62, and a U-shaped connecting frame 64 is rotatably arranged on the outer side of the square tube 63 away from the rotating shaft 62, and a gun mount tube 65 is fixedly arranged on the side of the U-shaped connecting frame 64 away from the square tube; during use, by inserting a barbell bar into the gun mount tube 65 and then adding counterweights, the barbell bar can be rotated 360°, thereby achieving the purpose of exercise.

[0056] In a preferred embodiment, the foot pedal assembly 7 includes a fixing pin 71 symmetrically fixed on the side surface of the front end of the ground beam on a side bracket 101, a shaft tube 72 is rotatably provided on the fixing pin 71, and foot pedals 73 are fixedly provided on the two shaft tubes 72; a limiting tube 74 is fixedly provided on the top surface of the front end of the ground beam on the corresponding side bracket 101 corresponding to the foot pedal 73; during use, it is necessary to cooperate with the counterweight mechanism 2, the sliding group mechanism 3 and the steel wire rope, facing the foot pedal 73, the foot pedal 73 is rotated upward and limited at the limiting tube 74, and then the foot is stepped on the foot pedal 73, the ends of the two steel wire ropes are held with both hands, and the counterweight mechanism 2 connected thereto is pulled to perform rowing exercises.

[0057] Long and short safety frame assemblies are provided on the two fixed beams 1012;

[0058] In a preferred embodiment, the long and short safety frame assembly includes a group of long safety frames 8 and a group of short safety frames 9; two long safety frames 8 and two short safety frames 8 are provided, each of which is fixed on two fixed beams 1012, and is used for safe placement before or during lifting the barbell.

[0059] Among them, the short safety frame 9 is placed above the long safety frame 8. Before lifting the barbell, the barbell can be placed on the two short safety frames 9 first, and then the lifting exercise can be performed; during the exercise, if the exercise needs to be interrupted, the barbell can be placed on the two long safety frames 8 to ensure safety.

[0060] The installation method of the long safety frame 8 and the short safety frame 9 is the same as that of the parallel bar bracket 5, and both are fixed by a U-shaped frame and a limit pin shaft passing through the installation through hole; a load-bearing rod is fixedly provided on one side of the U-shaped frame of the long safety frame 8 or the short safety frame 9, and mounting plates are symmetrically fixedly provided on both sides of the load-bearing rod, and mounting holes are provided on the mounting plates for installing the leg press frame assembly 10.

[0061] In a preferred embodiment, the leg press frame assembly 10 is detachably arranged on a long safety frame 8; wherein, the leg press frame assembly 10 is detachably fixed on two mounting plates by fixing pins.

[0062] The fixed beam 1012 is provided with a leg exercise attachment 11 .

[0063] In a preferred embodiment, the leg exercise accessory 11 includes a fixed rod 111 and a rotating rod assembly; the fixed rod 111 is detachably fixed on a fixed beam 1012; the rotating rod assembly includes a U-shaped mounting frame 112 which is detachably fixed on the corresponding fixed beam 1012 by a bolt assembly, a connecting rod 113 is rotatably provided on the U-shaped mounting frame 112, and a rotating rod 114 parallel to the fixed rod 111 is fixedly provided at one end of the connecting rod 113 away from the U-shaped mounting frame 112; a counterweight rod 115 for adding counterweight is fixedly provided on a side surface of the connecting rod 113 away from the rotating rod 114, and during exercise, counterweight can be added to the counterweight rod 115 to increase the intensity of leg exercise.

[0064] During the leg exercise, a chair can be used for assistance. The user sits on the chair, places the backs of the knees on the fixed rod 111, hooks the insteps of the feet on the inner side of the rotating rod 114, and lifts the feet upward to drive the rotating rod 114 and the connecting rod 113 to rotate upward, thereby achieving leg exercise.

[0065] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0066] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multifunctional training device, comprising a support body, on which a weight mechanism, a pulley mechanism and a steel wire rope for realizing bird flying training are arranged; characterized in that: The bracket body includes two symmetrically arranged side brackets, on which vertical beams and fixed beams parallel to each other are fixedly arranged; the bracket body is provided with squat accessories for squat exercises; the fixed beams are provided with parallel bar brackets for pull-up exercises; the front end of the ground beam of one of the side brackets is provided with a gun mount for exercising the arms and back muscles, and the front end of the ground beam of the other side bracket is provided with a foldable foot pedal assembly for cooperating with the counterweight mechanism, the pulley mechanism and the wire rope to realize the rowing exercise project; the two fixed beams are provided with long and short safety frame assemblies; the fixed beams are provided with leg exercise accessories.

2. The multifunctional training device according to claim 1, characterized in that: The fixed beam is configured as a square column, and a plurality of mounting through holes are evenly arranged on the front and rear wall surfaces of the fixed beam along the height direction thereof.

3. The multifunctional training device according to claim 2, characterized in that: The squat attachment includes a guide column, a shock absorbing assembly, a sliding assembly, a weight rack and a safety assembly; wherein, The guide column is fixedly arranged on the inner side of the side bracket, between the vertical beam and the fixed beam, and arranged in a vertical direction; The shock absorbing assembly comprises a fixed sleeve fixedly sleeved on the lower part of the guide column, a circular fixed baffle fixedly arranged on the top of the fixed sleeve and sleeved on the outside of the guide column, a shock absorbing spring is arranged on the top surface of the fixed baffle and sleeved on the outside of the guide column; a sliding baffle is fixedly arranged on the top of the shock absorbing spring, the sliding baffle is slidably sleeved on the outside of the guide column, a conical shock absorbing pad is fixedly arranged on the top surface of the sliding baffle, and the conical shock absorbing pad is slidably sleeved on the outside of the guide column; The sliding assembly comprises a sliding sleeve slidably sleeved on the outer wall surface of the guide column, and the sliding sleeve is arranged above the conical shock-absorbing pad; The load-bearing rod is fixedly arranged in a horizontal direction between the two sliding sleeves; The safety component includes a lever, a safety frame plate and a safety hook plate; the lever is fixedly arranged on two opposite wall surfaces of the two vertical beams, and a plurality of levers are evenly arranged along the height direction of the vertical beams; one side of the safety frame plate is arranged to be used for hooking on the corresponding lever, and the other side is rotatably arranged on the fixed sleeve; one side of the safety hook plate is arranged to be used for hooking on the corresponding lever, and the other side is rotatably arranged on the frame weight rod.

4. The multifunctional training device according to claim 3, characterized in that: The parallel bar brackets are provided with two, and the two parallel bar brackets are symmetrically arranged on the two fixed beams respectively; the parallel bar bracket comprises a U-shaped frame, a support rod is fixedly arranged on the bottom surface of the U-shaped frame, and a handle perpendicular to the support rod is fixedly arranged on the wall surface of the support rod; a through hole is provided on the U-shaped frame, and the U-shaped frame is fixed to the corresponding fixed beam by a limiting pin shaft passing through the through hole and the installation through hole.

5. The multifunctional training device according to claim 4, characterized in that: The gun mount includes a ground beam tube fixedly arranged on the top surface of the front end of the ground beam of one of the side brackets, a rotating shaft rotatably arranged passing through the interior of the ground beam tube, a square tube fixedly arranged on the rotating shaft, a U-shaped connecting frame rotatably arranged on the outer side of the square tube away from the rotating shaft, and a gun mount tube fixedly arranged on the side of the U-shaped connecting frame away from the square tube.

6. The multifunctional training device according to claim 5, characterized in that: The long and short safety frame assembly includes a group of long safety frames and a group of short safety frames; two long safety frames and two short safety frames are provided, which are respectively fixed on the two fixed beams and are used for safely placing the barbell before or during lifting.

7. The multifunctional training device according to claim 6, characterized in that: The leg press frame assembly is detachably arranged on one of the long safety frames.

8. The multifunctional training device according to claim 7, characterized in that: The foot pedal assembly includes a fixing pin symmetrically fixed on the front end side of the ground beam on one of the side brackets, an axle tube rotatably arranged on the fixing pin, and foot pedals are fixedly arranged on the two axle tubes; a limiting tube is fixedly arranged on the top surface of the front end of the ground beam on the corresponding side bracket corresponding to the foot pedal.

9. The multifunctional training device according to claim 8, characterized in that: The leg exercise accessory includes a fixed rod and a rotating rod assembly; the fixed rod is detachably fixed on one of the fixed beams; the rotating rod assembly includes a U-shaped mounting frame detachably fixed on the corresponding fixed beam, a connecting rod is rotatably provided on the U-shaped mounting frame, a rotating rod parallel to the fixed rod is fixedly provided at one end of the connecting rod away from the U-shaped mounting frame; a counterweight rod for adding counterweight is fixedly provided on a side surface of the connecting rod away from the rotating rod.

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