Liftable bench press device

Abstract

The utility model discloses a liftable bench press device which comprises a bench press stool and a barbell stand, and further comprises two lifting protection frames and a pneumatic lifting mechanism, auxiliary supports are arranged at the bottom end of the barbell stand and located on the two sides of the bench press stool, the two lifting protection frames are arranged on the auxiliary supports respectively, and the two lifting protection frames can ascend and support the two ends of a barbell. The pneumatic lifting mechanism is installed at the lower end of the bench press stool and used for driving the bench press stool to move up and down. Through the arrangement of the two lifting protection frames, the bench press bench can be moved to the designated height in advance according to needs to serve as a protection measure when the protection frames conduct movement, meanwhile, through the arrangement of the pneumatic lifting mechanism, when a trainee conducts training, if the crisis situations such as physical power failure occur, the pneumatic lifting mechanism can be driven to drive the bench press bench to move downwards according to needs, and the training effect is achieved. Therefore, the two ends of the barbell naturally fall on the lifting protection frames on the two sides, a body builder is prevented from being crushed by the barbell, and the safety protection effect on the body builder is achieved.

Description

Technical Field

[0001] The utility model relates to a bench press apparatus, in particular to a liftable bench press device. Background Art

[0002] The bench press apparatus is a training apparatus that most exercisers or rehabilitation trainers are keen on. Generally, it consists of a barbell rack for placing the barbell, a protection rack, and a flat bench for people to lie on their backs. When a trainer conducts bench press training alone, when experiencing exhaustion or failure to lift a heavy weight, the barbell will fall downward and directly hit people's chests or necks, causing personal injuries, and in severe cases, it may even endanger life. In recent years, the "guillotine" caused by bench press training also occurs from time to time in the gym.

[0003] Trainers with safety awareness will install the protection rack before conducting heavy weight training. When the bench press fails, the barbell will fall on the protection rack. Usually, at this time, it is very difficult for the trainer to return the barbell to the barbell rack alone, and returning the barbell to the barbell rack later also greatly consumes the trainer's physical strength, resulting in a further reduction in the training quality.

[0004] Therefore, there is an urgent need for a liftable bench press device to solve the problem that trainers cannot effectively avoid self-harm when experiencing special situations such as physical exhaustion during training. Summary of the Utility Model

[0005] The utility model aims at the deficiencies in the prior art and provides a liftable bench press device to solve the problem that trainers cannot effectively avoid self-harm when experiencing special situations such as physical exhaustion during training.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A liftable bench press device includes a bench press bench and a barbell rack, and is characterized in that: it further includes two lifting protection racks and a pneumatic lifting mechanism. Auxiliary supports are provided at the bottom ends of the barbell rack and on both sides of the bench press bench. The two lifting protection racks are respectively arranged on the auxiliary supports, and the two lifting protection racks can rise and support both ends of the barbell. The pneumatic lifting mechanism is installed at the lower end of the bench press bench, and the pneumatic lifting mechanism is used to drive the bench press bench to move up and down.

[0008] To optimize the above technical solution, the specific measures taken further include:

[0009] Further, the pneumatic lifting mechanism includes a lifting mechanism foot pedal, a base, a pressure gas storage tank, several pressure air pipes, and lifting columns. The pressure gas storage tank is installed on the base. The front and rear sides of the upper end of the base are respectively connected to the lower end of the bench press through a lifting column. The two lifting columns are respectively connected to the pressure gas storage tank through several pressure air pipes. The lifting mechanism foot pedal is installed on the base and is electrically connected to the pressure gas storage tank, and is used to control the pressure gas storage tank to drive the two lifting columns to rise or fall.

[0010] Further, each lifting column includes a top column, an upper outer cylinder, and a lower outer cylinder. The lower outer cylinder is installed on the base. The upper end of the lower outer cylinder is provided with a lower air chamber, and the side wall of the lower outer cylinder is provided with a lower air passage for the pressure air pipe to communicate with the lower air chamber. The lower end of the top column is slidably and sealingly arranged in the lower air chamber. The upper end of the upper outer cylinder is provided with an upper air chamber, and the side wall of the upper outer cylinder is provided with an upper air passage for the pressure air pipe to communicate with the upper air chamber. The upper end of the top column is slidably and sealingly arranged in the upper air chamber. The upper end of the upper outer cylinder is connected to the bench press. The pressure gas storage tank is respectively communicated with the upper air chambers and the lower air chambers of the two lifting columns through several pressure air pipes.

[0011] Further, each lifting column further includes two solenoid valves. One solenoid valve is respectively provided at the connection between the upper air passage and the upper air chamber, and at the connection between the lower air passage and the lower air chamber. The two solenoid valves are both electrically connected to the lifting mechanism foot pedal, and the lifting mechanism foot pedal is used to drive the opening or closing of the solenoid valves.

[0012] Further, locking mechanisms are respectively provided at the connections between the top column and the upper outer cylinder and the lower outer cylinder. The locking mechanisms are used to limit the sliding of the upper end of the top column in the upper air chamber of the upper outer cylinder and limit the sliding of the lower end of the top column in the lower air chamber of the lower outer cylinder.

[0013] Further, the lifting protection frame includes an arc-shaped shelf, a front top column, a rear top column, and a protection frame base. The upper end of the auxiliary support is provided with a guide groove parallel to the bench press. The protection frame base is slidably arranged in the guide groove. The upper end of the protection frame base is respectively vertically connected to the front top column and the rear top column. The front top column is arranged on one side of the supporting mechanism of the barbell rack close to the barbell rack. The arc-shaped shelf is in the shape of an arc with an upward flared opening. The front side of the lower end of the arc-shaped shelf is hinged to the front top column through a rotary pair, and the rear side of the lower end of the arc-shaped shelf abuts against the upper end of the rear top column. The front top column and the rear top column can respectively move up and down independently. The upper end of the arc-shaped shelf is used to contact and support the barbell.

[0014] Further, an infrared locator is installed at the front end of the arc-shaped shelf, and the infrared locator is used to mark and locate the supporting mechanism of the barbell rack.

[0015] Further, a chute in the front - to - rear direction is provided at the upper end of the arc - shaped shelf, and both ends of the chute are closed. A damping element is slidably arranged in the chute, and a groove is provided in the middle of the damping element.

[0016] Further, the supporting mechanism of the barbell rack includes two columns, a barbell support, and a control panel. The two columns are respectively connected to the front ends of the corresponding auxiliary supports. Several barbell supports are spaced and installed on the side of the column close to the auxiliary support. A control panel is installed on any one of the columns, and the control panel is electrically connected to the pneumatic lifting mechanism, the front top column, and the rear top column respectively.

[0017] Further, an adjustable footrest mechanism is also included. The adjustable footrest mechanism includes an adjustable footrest frame, an adjustable footrest, an adjustable footrest bolt, an adjustable bracket, an adjustable bracket rotating pair, a positioning card slot, and an adjustable footrest frame rotating pair. The adjustable footrest frame is arc - shaped, the flared opening of the adjustable footrest frame is set backward, and the lower end is hinged to the rear end of the base through the adjustable footrest frame rotating pair. Several positioning card slots are spaced on the base at the rear side of the adjustable footrest frame. The rear end of the adjustable footrest frame is hinged to one end of the adjustable bracket through the adjustable bracket rotating pair, and the other end of the adjustable bracket is used to abut and support against the corresponding positioning card slot. A plurality of bolt holes penetrating left - and - right are provided on the side wall of the adjustable footrest frame, and a slot is provided in the middle of the adjustable footrest frame in the front - to - rear plane. The adjustable footrest is in an I - shape, the middle section of the adjustable footrest is slidably arranged in the slot, and a connection hole corresponding to the bolt hole is provided in the middle - upper part of the adjustable footrest. The adjustable footrest is positioned and connected to the adjustable footrest frame through the adjustable footrest bolt penetrating the corresponding bolt hole and the connection hole.

[0018] The beneficial effects of the present utility model are as follows:

[0019] With the setting of the two lifting protection frames in the present utility model, during use, they can be pre - moved to the specified height as required to serve as protective measures during exercise. At the same time, with the setting of the pneumatic lifting mechanism, when the trainer is training and in a crisis situation such as physical exhaustion, the pneumatic lifting mechanism can be driven as required to drive the bench press stool to move downward, so that the two ends of the barbell naturally fall on the two - side lifting protection frames, enabling the barbell to be stably supported. Thus, the problem that the trainer cannot effectively avoid self - injury in special situations such as physical exhaustion during training is solved, enabling the trainer to actively control the descent of the bench press stool to get out of danger, avoiding the fitness person being crushed by the barbell, and playing a safety protection role for the fitness person.

[0020] The utility model can operate the controller on the control panel to return the barbell to the barbell rack, saving physical strength for the trainer and improving the exercise efficiency. The damping element of the utility model can make the barbell falling from above land on the barbell rack at a low speed, reducing the inertial impact of the barbell on the barbell rack and increasing the fatigue resistance strength of the barbell rack. The rollers inside the barbell support of the utility model are in line contact with the barbell, and the trainer can easily move the barbell axially. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic perspective view of a liftable bench press device proposed by the utility model;

[0022] Figure 2 is a front view of the overall structure of a liftable bench press device proposed by the utility model;

[0023] Figure 3 is a schematic perspective view of the pressure gas storage tank of a liftable bench press device proposed by the utility model;

[0024] Figure 4 is a sectional view of the lifting column of a liftable bench press device proposed by the utility model;

[0025] Figure 5 is a schematic perspective view of the adjustable footrest mechanism of a liftable bench press device proposed by the utility model;

[0026] Figure 6 is a schematic perspective view of the barbell rack and the lifting protection rack of a liftable bench press device proposed by the utility model;

[0027] Figure 7 is Figure 6 an enlarged view of part A of

[0028] Figure 8 is Figure 6 an enlarged view of part B of

[0029] Figure 9 is Figure 6 an enlarged view of part C of

[0030] Reference Numerals: 1 - bench press bench; 11 - flat pad; 2 - pneumatic lifting mechanism; 21 - pressure gas storage tank; 211 - pressure replenishing valve; 212 - pressure sensor; 22 - pressure air pipe; 23 - lifting mechanism foot pedal; 24 - lifting column; 241 - solenoid valve; 242 - upper air passage; 243 - upper air chamber; 244 - top column; 245 - lower air chamber; 246 - lower air passage; 247 - locking mechanism; 3 - adjustable foot pedal mechanism; 31 - adjustable foot support frame; 32 - adjustable foot support; 33 - adjustable foot support bolt; 34 - adjustable support; 35 - adjustable support rotating pair; 36 - positioning card slot; 37 - adjustable foot support frame rotating pair; 4 - base; 5 - lifting protection frame; 51 - arc shelf; 511 - infrared locator; 512 - damping element; 52 - front top column; 53 - rear top column; 54 - protection frame base; 6 - barbell rack; 61 - barbell support; 611 - roller; 62 - guide groove; 63 - control panel; 631 - guide mechanism controller; 632 - lifting protection frame up button; 633 - lifting protection frame down button; 634 - rear top column up button; 635 - rear top column down button. Detailed Implementation Manner

[0031] The present utility model will be described in detail below with reference to the accompanying drawings.

[0032] As shown in the Figure 1 accompanying drawings, a liftable bench press device according to an embodiment of the present utility model includes a bench press bench 1 and a barbell rack 6. The bench press bench 1 is placed exactly in the middle of the barbell rack 6. It further includes two lifting protection frames 5 and a pneumatic lifting mechanism 2. Auxiliary supports are provided at the bottom end of the barbell rack 6 and on both sides of the bench press bench 1. The two lifting protection frames 5 are respectively arranged on the auxiliary supports. The two lifting protection frames 5 can rise and support both ends of the barbell. The pneumatic lifting mechanism 2 is installed at the lower end of the bench press bench 1, and the pneumatic lifting mechanism 2 is used to drive the bench press bench 1 to move up and down.

[0033] Through the arrangement of the two lifting protection frames 5 in the present utility model, during use, they can be moved to a specified height as needed as a protective measure during exercise. At the same time, through the arrangement of the pneumatic lifting mechanism 2, when a trainer is training and in a crisis situation such as exhaustion, the pneumatic lifting mechanism 2 can be driven as needed to drive the bench press bench 1 to move down, so that both ends of the barbell naturally fall on the two lifting protection frames 5 on both sides, enabling the barbell to be stably supported, and solving the problem that when a trainer is in a special situation such as exhaustion during training and cannot effectively avoid self-injury, enabling the trainer to actively control the descent of the bench press bench 1 to get out of danger.

[0034] In this embodiment, the lifting protection frame 5 may not be actively raised to ensure that the training action is not affected. At the same time, the lowest height to which the pneumatic lifting mechanism 2 can descend can ensure that after the descent, the barbell is supported by the lifting protection frame 5 and does not come into contact with the trainer's body.

[0035] In another specific embodiment, the pneumatic lifting mechanism 2 includes a lifting mechanism foot pedal 23, a base 4, a pressure gas storage tank 21, several pressure air pipes 22, and a lifting column 24. The pressure gas storage tank 21 is installed on the base 4. The front and rear sides of the upper end of the base 4 are respectively connected to the lower end of the bench press 1 through a lifting column 24. The two lifting columns 24 are respectively connected to the pressure gas storage tank 21 through several pressure air pipes 22. The lifting mechanism foot pedal 23 is installed on the base 4 and is electrically connected to the pressure gas storage tank 21 for controlling the pressure gas storage tank 21 to drive the two lifting columns 24 to rise or fall synchronously.

[0036] In this way, during use, the trainer can step on the lifting mechanism foot pedal 23 to control the pressure gas storage tank 21 to drive the two lifting columns 24 to descend, thereby helping themselves out of a dangerous environment.

[0037] Among them, the above-mentioned lifting column 24 may include a top column 244, an upper outer cylinder, and a lower outer cylinder. The lower outer cylinder is installed on the base 4. The upper end of the lower outer cylinder is provided with a lower air chamber 245. The side wall of the lower outer cylinder is provided with a lower air passage 246 for the pressure air pipe 22 to communicate with the lower air chamber 245. The lower end of the top column 244 is slidably and sealingly arranged in the lower air chamber 245. The upper end of the upper outer cylinder is provided with an upper air chamber 243. The side wall of the upper outer cylinder is provided with an upper air passage 242 for another pressure air pipe 22 to communicate with the upper air chamber 243. The upper end of the top column 244 is slidably and sealingly arranged in the upper air chamber 243. The upper end of the upper outer cylinder is connected to the bench press 1. The pressure gas storage tank 21 is respectively communicated with the upper air chamber 243 and the lower air chamber 245 of the two lifting columns 24 through several pressure air pipes 22.

[0038] In this way, during use, the pressure gas storage tank 21 can supply or extract air to / from the upper air chamber 243 and the lower air chamber 245 respectively, so as to realize the rapid rise or fall of the lifting column 24, and thereby increase the reaction speed of the device when the trainer is in a crisis situation, further ensuring the training safety of the trainer.

[0039] Among them, the above-mentioned lifting column 24 may further include two solenoid valves 241. A solenoid valve 241 is respectively provided at the connection between the upper air passage 242 and the upper air chamber 243, and at the connection between the lower air passage 246 and the lower air chamber 245. The two solenoid valves 241 are both electrically connected to the lifting mechanism foot pedal 23, and the lifting mechanism foot pedal 23 is used to drive the opening or closing of the solenoid valves 241.

[0040] Therefore, during use, in the normal training state, the solenoid valve 241 can be closed to seal the upper air chamber 243 and the lower air chamber 245, thereby achieving a pressure-holding state and ensuring the stability during training use. In case of an emergency, the trainer steps on the lifting mechanism foot pedal 23 to control the solenoid valve 241 to open and simultaneously control the pressure gas storage tank 21 to extract air, so as to quickly realize the lowering operation of the lifting column 24. After that, the pressure gas storage tank 21 can be manually controlled to supply gas as needed, so that the lifting column 24 returns to the normal state, and then the lifting mechanism foot pedal 23 is restored to close the corresponding solenoid valve 241.

[0041] As shown in the Figure 4 accompanying drawings, in this embodiment, there are two sliders sliding horizontally on the solenoid valve 241. When the solenoid valve 241 is not powered on, the sliders are pressed by the locking spring in the solenoid valve 241 at the upper and lower air passages to achieve sealing. Specifically, when the solenoid valve 241 is closed, the sliders on the solenoid valve 241 block the upper air passage 242 and the lower air passage 246, and the upper air chamber 243 and the lower air chamber 245 cannot perform pressure conversion with the pressure gas storage tank 21. The solenoid valve 241 maintains the pressure of the upper air chamber 243 and the lower air chamber 245 to ensure the stability of the device during training use. When the solenoid valve 241 is opened, the sliders on the solenoid valve 241 move closer to each other, and the upper air chamber 243 and the lower air chamber 245 perform pressure conversion with the pressure gas storage tank 21, so that the lifting column 24 can be controlled to rise or fall as needed through the pressure gas storage tank 21.

[0042] Among them, locking mechanisms 247 are provided at the joints of the above-mentioned top columns 244 with the upper outer cylinder and the lower outer cylinder respectively. The locking mechanism 247 is used to restrict the upper end of the top column 244 from sliding in the upper air chamber 243 of the upper outer cylinder and to restrict the lower end of the top column 244 from sliding in the lower air chamber 245 of the lower outer cylinder.

[0043] In this embodiment, when the pressure in the upper air chamber 243 and the lower air chamber 245 reaches the maximum, the upper outer cylinder moves upward relative to the top column 244, and the lower outer cylinder moves downward relative to the top column 244. The locking mechanism 247 limits the position between the top column 244 and the upper outer cylinder and the lower outer cylinder when it moves to the maximum displacement. When the lifting column 24 rises to the maximum displacement, the locking mechanism 247 prevents the displacement between the upper outer cylinder and the lower outer cylinder and the top column 244. When the lifting column 24 descends to the lowest position, the displacement is restricted by the self-height of the top column 244 and the depths of the upper air chamber 243 and the lower air chamber 245.

[0044] As shown in the Figure 3 accompanying drawings, in another specific embodiment, a pressure replenishing valve 211 and a pressure sensor 212 are provided on the pressure gas storage tank 21. The pressure sensor 212 is used for pressure measurement, and the pressure replenishing valve 211 is used for pressure replenishment. Active pressure replenishment can be performed as needed according to the pressure measurement of the pressure sensor 212 through the pressure replenishing valve 211.

[0045] In another specific embodiment, the lifting protection frame 5 includes an arc shelf 51, a front top column 52, a rear top column 53 and a protection frame base 54. The upper end of the auxiliary support is provided with a guide groove 62 parallel to the bench press 1, and the protection frame base 54 is slidably arranged in the guide groove 62. The upper end of the protection frame base 54 is vertically connected to the front top column 52 and the rear top column 53 respectively. The front top column 52 is arranged on one side of the supporting mechanism for supporting the barbell near the barbell rack 6. The arc shelf 51 is in the shape of an arc with an upward flared opening. The front side of the lower end of the arc shelf 51 is hinged to the front top column 52 through a rotary pair, and the rear side of the lower end of the arc shelf 51 abuts or is in frictional contact with the upper end of the rear top column 53. The front top column 52 and the rear top column 53 can be independently moved up and down respectively, and the upper end of the arc shelf 51 is used to contact and support the barbell.

[0046] Thus, during use, the arc shelf 51 can be raised or lowered by simultaneously driving the front top column 52 and the rear top column 53. After the arc shelf 51 supports the barbell, when the trainer needs to put the barbell back on the supporting mechanism, the front top column 52 and the rear top column 53 can be synchronously driven to be raised or lowered to the required position first, and then the rear top column 53 far from the supporting mechanism is controlled to rise, so as to drive the barbell on the arc shelf 51 to move along the arc shelf 51 until the barbell is separated from the arc shelf 51 and reaches the supporting mechanism to complete the recovery.

[0047] In this embodiment, a limiting structure can be set to limit the protection frame base 54 at its current position in the guide groove 62 after it slides, or a guiding and driving structure can be set to control and drive the protection frame base 54 to move in the guide groove 62.

[0048] As shown in the Figure 8 attachment, in another specific embodiment, a chute in the front-rear direction is opened at the upper end of the arc shelf 51, and both ends of the chute are closed. A damping element 512 is slidably arranged in the chute. A groove is provided in the middle of the damping element 512. During use, the damping element 512 is installed on the chute of the arc shelf 51. During the process of raising or lowering the rear top column 53, the damping element 512 can always remain horizontal and drive the barbell to move relatively uniformly along the chute. When the rear top column 53 rises to the highest position, the damping element 512 moves to the front end of the arc shelf 51. At this time, the rear end of the damping element 512 is higher than the front end, which is convenient for the barbell to slide onto the supporting mechanism. The positioning groove of the damping element 512 can facilitate a certain limit on the barbell. When the barbell is placed on the arc shelf 51, the barbell rolls onto the damping element 512. During the subsequent movement, the damping element 512 bears the weight of the barbell and drives it to move together to the supporting mechanism of the barbell rack 6, so as to reduce the inertial impact caused by the barbell directly rolling from the arc shelf 51 onto the barbell rack 6.

[0049] As shown in the Figure 7As shown, in another embodiment, an infrared locator 511 is installed at the front end of the arc-shaped shelf 51. When the front top column 52 and the rear top column 53 are lifted or lowered, the infrared locator 511 is used to turn on the infrared ray marking and locate the supporting mechanism of the barbell rack 6. When the lifting protection frame 5 is working, the infrared locator 511 is turned on to emit infrared rays onto the supporting mechanism of the barbell rack 6 to achieve position positioning or induction, so as to control the moving height of the arc-shaped shelf 51 and the distance between the arc-shaped shelf 51 and the supporting mechanism.

[0050] As shown in the Figure 9 attached figure, in another specific embodiment, the supporting mechanism of the barbell rack 6 may include two columns, a barbell support 61 and a control panel 63. The two columns are respectively connected to the front ends of the corresponding auxiliary supports. A connecting frame is provided between the columns, and a support frame is provided on the side wall of the columns to increase stability. Several barbell supports 61 are installed at intervals on one side of the column close to the auxiliary support. A control panel 63 is installed on any one of the columns. The control panel 63 is electrically connected to and controls the pressure air storage tank 21 of the pneumatic lifting mechanism 2, the front top column 52 and the rear top column 53 respectively. In this way, it is convenient to control the pressure air storage tank 21, the front top column 52, the rear top column 53, etc. of the pneumatic lifting mechanism 2 respectively through the control panel 63.

[0051] In this embodiment, the control panel 63 may also be electrically connected to the above-mentioned guiding and driving structure, and a guiding and driving structure controller 631, a lifting protection frame lifting key 632, a lifting protection frame lowering key 633, a rear top column lifting key 634, a rear top column lowering key 635, etc. are set as required. The guiding and driving structure controller 631 controls the driving protection frame base 54 to move or dock in the guiding groove 62. The lifting protection frame lifting key 632 and the lifting protection frame lowering key 633 control the overall lifting or lowering of the lifting protection frame 5. The rear top column lifting key 634 and the rear top column lowering key 635 control the lifting or lowering of the rear top column 53.

[0052] In this embodiment, the barbell support 61 contains rollers 611. The rollers 611 are embedded in the barbell support 61, and the barbell is in line contact with the rollers 611. Among them, the rollers 611 can rotate freely in the barbell support 61. The barbell is placed on the barbell support 61 and contacts with the rollers 611. Through the rotation of the rollers 611, the axial movement of the barbell can be easily achieved.

[0053] As shown in the Figure 5As shown, in another specific embodiment, it further includes an adjustable footrest mechanism 3. The adjustable footrest mechanism 3 includes an adjustable footrest frame 31, an adjustable footrest 32, an adjustable footrest bolt 33, an adjustable bracket 34, an adjustable bracket rotating pair 35, a positioning card slot 36, and an adjustable footrest frame rotating pair 37. The adjustable footrest frame 31 is arc-shaped, the flared opening of the adjustable footrest frame 31 is arranged backward, and the lower end is hinged to the rear end of the base 4 through the adjustable footrest frame rotating pair 37. On the base 4, several positioning card slots 36 are arranged at intervals on the rear side of the adjustable footrest frame 31. The rear end of the adjustable footrest frame 31 is hinged to one end of the adjustable bracket 34 through the adjustable bracket rotating pair 35. The other end of the adjustable bracket 34 is used to abut and support the corresponding positioning card slot 36, so that the use angle of the adjustable footrest frame 31 can be adjusted as needed; several plug holes penetrating left and right are arranged on the side wall of the adjustable footrest frame 31, and a slot is arranged in the middle of the adjustable footrest frame 31 in the plane of the front-back direction. The adjustable footrest 32 is in an I shape. The middle section of the adjustable footrest 32 is slidably arranged in the slot, and a connection hole is arranged on the upper middle of the adjustable footrest 32 corresponding to the plug hole. The adjustable footrest 32 is positioned and connected to the adjustable footrest frame 31 through the adjustable footrest bolt 33 penetrating the corresponding plug hole and the connection hole. In this way, when in use, the use angle of the adjustable footrest frame 31 can be adjusted as needed by the adjustable bracket 34 being stuck in the positioning card slot 36, and the use position of the adjustable footrest 32 up and down can be adjusted and positioned by the adjustable footrest bolt 33 being inserted into a certain plug hole on the adjustable footrest frame 31, which is convenient for adjusting as needed according to the needs of the trainer.

[0054] In another embodiment, the front half of the flat cushion 11 on the bench press bench 1 is of a wavy structure, and the back of the trainer contacts the flat cushion 11. In this way, when the trainer lies on his back on the flat cushion, the friction between him and the back can be increased.

[0055] As shown in the attached Figure 2 and attached Figure 6 As shown, a specific use process of the device of the present invention is as follows:

[0056] Trainers can adjust the distance between left and right by rotating the adjustable footrest frame 31 around the adjustable footrest frame rotating pair 37 according to their own different structures, fix the adjustable footrest frame 31 by the adjustable bracket 34 being stuck in the positioning card slot 36, and fix the adjustable footrest 32 in a certain plug hole of the adjustable footrest frame through the adjustable footrest bolt 33, so as to realize the height of the adjustable footrest and meet the use comfort of the trainer.

[0057] The trainer lies supine on the flat pad 11, with the upper back in contact with the wavy structure of the flat pad, thereby increasing the friction and improving the stability of the trainer's training. During normal exercise, the slider in the solenoid valve 241 is blocked by the spring at the air inlets of the upper air passage 242 and the lower air passage 246, and the pressure gas storage tank 21 cannot achieve pressure conversion with the upper air chamber 243 and the lower air chamber 245, so that the pneumatic lifting mechanism 2 remains stationary, and the trainer can lie supine on the flat pad 11 for normal fitness exercise; when the fitness person is unable to bear the weight of the barbell due to exhaustion or in case of an accident, step on the lifting mechanism pedal 23 with the foot, the solenoid valve 241 is energized, and the sliders of the solenoid valve 241 move towards each other. The pressure gas storage tank 21 is ventilated with the upper air chamber 243 and the lower air chamber 245 through the pressure air pipe 22, the upper air passage 242 and the lower air passage 246. At this time, the internal air pressure in the upper air chamber 243 and the lower air chamber 245 is greater than the air pressure in the pressure gas storage tank 21. At the same time, the pressure gas storage tank 21 can be set to cooperate with rapid air extraction to realize the accelerated descent of the pneumatic lifting mechanism 2. When the trainer descends to a safe position, the barbell is placed on the lifting protection frame 5, and the foot is removed from the lifting mechanism pedal 23. The solenoid valve 241 is de-energized, and the sliders of the solenoid valve 241 are blocked by the spring at the air inlets of the upper air passage 242 and the lower air passage 246. At this time, the pneumatic lifting mechanism 2 and the trainer are in the position after descent.

[0058] After the trainer gets up from the flat pad 11, step on the lifting mechanism pedal 23 with the foot, the solenoid valve 241 is energized again, and the sliders of the solenoid valve 241 move towards each other. The pressure gas storage tank 21 is ventilated with the upper air chamber 243 and the lower air chamber 245 through the pressure air pipe 22, the upper air passage 242 and the lower air passage 246. At this time, the air pressure in the pressure gas storage tank 21 is greater than the internal air pressure in the upper air chamber 243 and the lower air chamber 245 until the pneumatic lifting mechanism 2 rises to the original position. Release the lifting mechanism pedal 23, and the solenoid valve 241 is de-energized. The sliders of the solenoid valve 241 are blocked by the spring at the air inlets of the upper air passage 242 and the lower air passage 246.

[0059] At this time, the barbell is placed on the arc shelf 51 of the lifting protection frame 5. No matter where the barbell is placed on the arc shelf 51, due to its structural reasons, it will roll onto the damping element 512 and restrict the horizontal movement of the barbell. Operate the control panel 63 on the barbell rack 6 and press the lifting protection frame up button 632. The entire lifting protection frame 5 rises. At the same time, the infrared locator 511 at the left end of the arc shelf 51 is turned on. The infrared locator 511 emits infrared rays to locate on the barbell rack 6. After determining the height, operate the guiding controller 631 to move to the left until it reaches the barbell support 61. Press the rear top column up button 634. The barbell follows the damping element 512 and moves horizontally. When it moves to the leftmost end of the arc shelf 51, the right end of the damping element 512 is higher than the left end, and the barbell is placed from the damping element 512 onto the barbell support 61. At this time, the position of the lifting protection frame 5 can be reset. Operate the guiding controller 631 to move to the right to the initial position, and press the lifting protection frame down button 633 to restore the lifting protection frame 5 to its initial height. Finally, adjust the barbell on the barbell support 61. The barbell is in direct contact with the rollers 611 on the barbell support 61. The axial position of the barbell can be adjusted by the rotation of the rollers 611. This process of resetting the barbell does not consume the physical strength of the trainer, ensuring the efficiency of the trainer's subsequent exercise.

[0060] The bench press bench 1 of the present utility model is provided with a pneumatic lifting mechanism 2, which can realize the raising and lowering of the bench press bench. When the trainer is physically exhausted and unable to bear the weight of the barbell or an accident occurs, the trainer can step on the foot pedal 23 of the lifting mechanism with the foot to lower the bench press bench 1, and the barbell will be placed on the lifting protection frame 5 as the bench press bench 1 descends.

[0061] It should be noted that the terms such as "up", "down", "left", "right", "front", "rear", etc. cited in the utility model are only for the convenience of clear narration, rather than to limit the scope of implementation of the present utility model. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope of implementation of the present utility model.

[0062] The above is only the preferred implementation mode of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions within the idea of the present utility model belong to the protection scope of the present utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present utility model should be regarded as the protection scope of the present utility model.

Claims

1. A liftable bench press device, comprising a bench press bench (1) and a barbell rack (6), characterized in that: It also comprises two lifting protection frames (5) and a pneumatic lifting mechanism (2); auxiliary supports are provided at the bottom end of the barbell frame (6) and on both sides of the bench press bench (1); the two lifting protection frames (5) are respectively arranged on the auxiliary supports; the two lifting protection frames (5) can rise and support the two ends of the barbell; the pneumatic lifting mechanism (2) is installed at the lower end of the bench press bench (1); the pneumatic lifting mechanism (2) is used to drive the bench press bench (1) to move up and down.

2. The liftable bench press device according to claim 1, characterized in that: The pneumatic lifting mechanism (2) comprises a lifting mechanism footrest (23), a base (4), a pressure gas storage tank (21), a plurality of pressure gas pipes (22) and a lifting column (24); the pressure gas storage tank (21) is mounted on the base (4); the front and rear sides of the upper end of the base (4) are respectively connected to the lower end of the bench press bench (1) via a lifting column (24); the two lifting columns (24) are respectively connected to the pressure gas storage tank (21) via a plurality of pressure gas pipes (22); the lifting mechanism footrest (23) is mounted on the base (4); the lifting mechanism footrest (23) is electrically connected to the pressure gas storage tank (21) and is used to control the pressure gas storage tank (21) to drive the two lifting columns (24) to ascend or descend.

3. The liftable bench press device according to claim 2, characterized in that: The lifting column (24) comprises a top column (244), an upper outer cylinder and a lower outer cylinder. The lower outer cylinder is mounted on the base (4). A lower air cavity (245) is provided at the upper end of the lower outer cylinder. A lower air passage (246) is provided on the side wall of the lower outer cylinder for the pressure air pipe (22) to communicate with the lower air cavity (245). The lower end of the top column (244) is slidably sealed in the lower air cavity (245). An upper air cavity (243) is provided at the lower end of the upper outer cylinder. An upper air passage (242) is provided on the side wall of the upper outer cylinder for the pressure air pipe (22) to communicate with the upper air cavity (243). The upper end of the top column (244) is slidably sealed in the upper air cavity (243). The upper end of the upper outer cylinder is connected to the bench press (1). The pressure gas storage tank (21) is respectively connected to the upper air cavity (243) and the lower air cavity (245) of the two lifting columns (24) through a plurality of pressure air pipes (22).

4. The liftable bench press device according to claim 3, characterized in that: The lifting column (24) further comprises two solenoid valves (241); a solenoid valve (241) is respectively provided at the connection point between the upper air passage (242) and the upper air cavity (243), and at the connection point between the lower air passage (246) and the lower air cavity (245); the two solenoid valves (241) are both electrically connected to the lifting mechanism pedal (23); the lifting mechanism pedal (23) is used to drive the solenoid valves (241) to open or close.

5. The liftable bench press device according to claim 3, characterized in that: The top column (244) is provided with a locking mechanism (247) at the connection points with the upper outer tube and the lower outer tube respectively. The locking mechanism (247) is used to limit the upper end of the top column (244) from sliding in the upper air cavity (243) of the upper outer tube, and to limit the lower end of the top column (244) from sliding in the lower air cavity (245) of the lower outer tube.

6. The liftable bench press device according to claim 1, characterized in that: The lifting protection frame (5) comprises an arc frame (51), a front top column (52), a rear top column (53) and a protection frame base (54); the upper end of the auxiliary support is provided with a guide groove (62) parallel to the bench press bench (1); the protection frame base (54) is slidably arranged in the guide groove (62); the upper end of the protection frame base (54) is vertically connected to the front top column (52) and the rear top column (53); the front top column (52) is arranged on one side of the supporting mechanism close to the barbell rack (6); the arc frame (51) is in an arc shape with an expanded opening facing upward; the front side of the lower end of the arc frame (51) is hinged to the front top column (52) through a rotating pair; the rear side of the lower end of the arc frame (51) is in contact with the upper end of the rear top column (53); the front top column (52) and the rear top column (53) can be telescopically moved up and down independently; the upper end of the arc frame (51) is used to contact and support the barbell.

7. The liftable bench press device according to claim 6, characterized in that: An infrared locator (511) is installed at the front end of the arc shelf (51), and the infrared locator (511) is used to mark and locate the supporting mechanism of the barbell rack (6).

8. The liftable bench press device according to claim 6, characterized in that: The upper end of the arc shelf (51) is provided with a slide groove in the front-to-back direction, and both ends of the slide groove are closed. A damping element (512) is slidably arranged in the slide groove, and a groove is arranged in the middle of the damping element (512).

9. The liftable bench press device according to claim 6, characterized in that: The support mechanism of the barbell rack (6) comprises two upright posts, a barbell support (61) and a control panel (63). The two upright posts are respectively connected to the front end of a corresponding auxiliary support. A plurality of barbell supports (61) are installed at intervals on one side of the upright post close to the auxiliary support. A control panel (63) is installed on any upright post. The control panel (63) is respectively electrically connected to the pneumatic lifting mechanism (2), the front top post (52) and the rear top post (53).

10. The liftable bench press device according to claim 2, characterized in that: The adjustable footrest mechanism (3) also includes an adjustable footrest mechanism (3), the adjustable footrest mechanism (3) including an adjustable footrest frame (31), an adjustable footrest (32), an adjustable footrest plug (33), an adjustable bracket (34), an adjustable bracket rotation pair (35), a positioning slot (36) and an adjustable footrest frame rotation pair (37), the adjustable footrest frame (31) is in an arc shape, the flared opening of the adjustable footrest frame (31) is arranged backward, and the lower end is hinged to the rear end of the base (4) through the adjustable footrest frame rotation pair (37), and the base (4) is provided with a plurality of positioning slots (36) at intervals on the rear side of the adjustable footrest frame (31), and the rear end of the adjustable footrest frame (31) is arranged through an adjustable footrest frame rotation pair (37). The adjusting bracket rotating pair (35) is hinged to one end of the adjustable bracket (34), and the other end of the adjustable bracket (34) is used to contact and support with the corresponding positioning slot (36); the side wall of the adjustable foot support frame (31) is provided with a plurality of bolt holes penetrating left and right, and the middle of the adjustable foot support frame (31) is provided with a slot on the plane in the front-back direction, and the adjustable foot support (32) is in an I-shape, and the middle section of the adjustable foot support (32) is slidably arranged in the slot, and a connecting hole is provided in the middle and upper part of the adjustable foot support (32) corresponding to the bolt hole, and the adjustable foot support (32) is positioned and connected with the adjustable foot support frame (31) through the adjustable foot support bolt (33) penetrating the corresponding bolt hole and the connecting hole.

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