阅读说明：本技术 一种健身器材配重装置 (Body-building apparatus counter weight device ) 是由 王淑芳 郭建洲 蔡冠蓝 李丁辛 王治坤 于 2021-08-25 设计创作，主要内容包括：本发明涉及一种健身器材配重装置,属于健身设备技术领域,包括：底座,配重箱,设置在底座的一端,配重箱与底座固定连接,用于实现存放铃片；多个模块化铃片组件,分别对称设置在配重箱内部的两端,用于实现在杠铃杆上自动配重；模块化铃片组件包括：两个半环内片,对称设置在配重箱的内部上下两侧；两个半环外片,分别对称设置在半环内片的外侧,半环外片与半环内片可拆卸连接且与配重箱的内壁连接；本发明通过半环内片、半环外片组成的配重铃片,能够进行在配重箱的内部进行快速组装,避免增加铃片时,需要拆卸前面安装的铃片,提高人员训练的安全性；本发明的装置操作简单,使用方便,实用性强,值得推广。(The invention relates to a counterweight device of fitness equipment, which belongs to the technical field of fitness equipment and comprises: the weight box is fixedly connected with the base and used for storing the weight plates; the modular weight plate assemblies are respectively and symmetrically arranged at two ends inside the weight box and are used for realizing automatic weight balancing on the barbell bar; the modular weight plate assembly includes: the two semi-ring inner sheets are symmetrically arranged at the upper side and the lower side in the weight box; the two semi-ring outer sheets are respectively and symmetrically arranged on the outer sides of the semi-ring inner sheets, and the semi-ring outer sheets are detachably connected with the semi-ring inner sheets and connected with the inner wall of the weight box; according to the weight-balancing weight plate formed by the semi-ring inner plates and the semi-ring outer plates, the weight box can be quickly assembled inside the weight box, the problem that when the weight plates are added, the weight plates installed in front need to be disassembled is avoided, and the safety of personnel training is improved; the device is simple to operate, convenient to use, high in practicability and worthy of popularization.)

1. A weight device for exercise equipment, comprising:

a base (1);

the weight box (2) is arranged at one end of the base (1), and the weight box (2) is fixedly connected with the base (1) and used for storing the weight plates;

the modular weight plate assemblies are respectively and symmetrically arranged at two ends inside the weight box (2) and are used for realizing automatic weight balancing on the barbell bar;

the modular weight plate assembly comprises: the two semi-ring inner sheets (3) are symmetrically arranged at the upper side and the lower side of the interior of the weight box (2); the two semi-ring outer sheets (4) are respectively and symmetrically arranged on the outer sides of the semi-ring inner sheets (3), and the semi-ring outer sheets (4) are detachably connected with the semi-ring inner sheets (3) and are connected with the inner wall of the weight box (2); the mounting mechanism is arranged on the semi-ring outer plate (4) and the semi-ring inner plate (3) and is used for fixing the semi-ring outer plate (4) and the semi-ring inner plate (3) on the barbell bar; the controller (5) is arranged on the base (1), and the controller (5) is electrically connected with the mounting mechanism.

2. The counterweight device for fitness equipment according to claim 1, wherein the mounting mechanism comprises two through holes (21) symmetrically formed in one side of the inner half ring sheet (3) close to the outer half ring sheet (4), two threaded holes (22) are also symmetrically formed in the outer half ring sheet (4) and are concentric with the through holes (21), a connecting pipe (23) penetrates through one end of each through hole (21) close to the outer half ring sheet (4), an annular sunken groove (24) is formed in one side, away from the threaded hole (22), of the connecting pipe (23), a limiting ring (25) is arranged on each annular sunken groove (24) and is in sliding connection with the connecting pipe, one end of each connecting pipe (23) is fixedly connected with the limiting ring (25), the other end of each connecting pipe extends into the threaded hole (22) and is in threaded fit connection with the threaded hole, and a six-prism rod (26) penetrates through one side of the threaded hole (22) close to the counterweight box (2), an inner hexagonal counter bore (27) is formed in one end, far away from the annular counter bore (24), of the connecting pipe (23), one end of the hexagonal prism rod (26) extends into the threaded hole (22) to be connected with the connecting pipe (23), a driving mechanism is arranged at the other end of the hexagonal prism rod and used for driving the connecting pipe (23) to rotate in the threaded hole (22), and the driving mechanism is electrically connected with the controller (5).

3. The counterweight device for fitness equipment according to claim 2, wherein a connecting sleeve (31) is arranged between the two semi-ring inner plates (3) at the upper and lower sides, two connecting plates (32) are symmetrically arranged at two sides of the connecting sleeve (31) far away from the semi-ring inner plates (3) respectively and are flush with the semi-ring inner plates (3), the semi-ring inner plates (3) and the connecting sleeve (31), connecting plate (32) laminating is connected, the bilateral symmetry that connecting plate (32) are close to semi-ring inner piece (3) is equipped with two screw rods (33), the one end and the perpendicular fixed connection of connecting plate (32) of screw rod (33), the inside screw thread that is equipped with of one end that connecting pipe (23) are close to connecting plate (32), the through-hole (21) that pass of screw rod (33) are connected with connecting pipe (23) screw-thread fit, the inside of adapter sleeve (31) also is equipped with the screw thread for realize with barbell pole cooperation fixed connection.

4. The counterweight device for fitness equipment according to claim 2, wherein the driving mechanism comprises a plurality of stepping motors (41) uniformly and symmetrically arranged at the upper side and the lower side of the counterweight box (2), the output shafts of the stepping motors (41) pass through the counterweight box (2) to be connected with the six prismatic rods (26), two support plates (42) are symmetrically arranged between the stepping motors (41) at the front side and the rear side, the support plates (42) are vertically and fixedly connected with the counterweight box (2), the stepping motors (41) are slidably connected with the support plates (42), a connecting rod (43) is arranged between the two support plates (42), a through groove (44) is arranged on the support plates (42), the connecting rod (43) passes through the through groove (44) to be fixedly connected with the stepping motors (41), a first air cylinder (45) is arranged between the six prismatic rods (26) at the front side and the rear side, and the first air cylinder (45) is fixedly connected with the inner wall of the counterweight box (2), the output end of the first air cylinder (45) penetrates through the weight box (2) to be connected with the connecting rod (43), and the stepping motor (41) and the first air cylinder (45) are electrically connected with the controller (5) respectively.

5. The counterweight device for the fitness apparatus according to claim 2, wherein the inner wall of one end of the threaded hole (22) close to the connecting pipe (23) is respectively provided with a first infrared travel switch (51) and a second infrared travel switch (52), the inner wall of one end of the annular sinking groove (24) far away from the threaded hole (22) is provided with a third travel switch (53), and the first infrared travel switch (51), the second infrared travel switch (52) and the third travel switch (53) are respectively and electrically connected with the controller (5).

6. The counterweight device for fitness equipment according to claim 1, wherein the counterweight box (2) is symmetrically provided with two bidirectional cylinders (61) at the outer sides of the two ends of the modular weight plate assembly, the bidirectional cylinders (61) are fixedly connected with the inner wall of the counterweight box (2), two support arms (62) are respectively and symmetrically arranged between the output ends of the two bidirectional cylinders (61) and are respectively and fixedly connected with the output ends of the two bidirectional cylinders, one side of the semi-ring outer plate (4) above the semi-ring inner plate (3) is provided with a slot (63), the support arms (62) and the inner wall of the counterweight box (2) close to one side of the support arms (62) are respectively and uniformly provided with a plurality of counter bores (64), one side of each counter bore (64) is provided with a cantilever (65) in a penetrating way and is in sliding connection with the cantilever (65), the other side of each counter bore (64) is provided with a spring (66), one end of each spring (66) is connected with the cantilever (65), and the other end is connected with the inner wall of each counter bore (64), the cantilever (65) extends into the slot (63) and is in sliding connection with the slot, an outlet (67) is formed in one side, away from the support arm (62), of the weight box (2), and the bidirectional cylinder (61) is electrically connected with the controller (5).

7. The counterweight device for the fitness equipment according to claim 1, wherein U-shaped grooves (71) are formed in two sides of the counterweight box (2) at the outlet (67), two Y-shaped supports (72) are symmetrically arranged on the outer sides of the U-shaped grooves (71), a sliding groove (73) is formed in one side, away from the U-shaped grooves (71), of the base (1), a supporting plate (74) penetrates through the sliding groove (73), a sliding block (75) is arranged on the supporting plate (74), the sliding block (75) is embedded into the sliding groove (73) and is connected with the sliding groove in a matched mode, two second air cylinders (76) are symmetrically arranged right below the Y-shaped supports (72) of the supporting plate (74), the second air cylinders (76) are fixedly connected with the supporting plate (74), the output ends of the second air cylinders are fixedly connected with the tips of the Y-shaped supports (72), and the second air cylinders (76) are electrically connected with the controller (5).

8. The counterweight device for fitness equipment according to claim 7, wherein universal wheels (81) are symmetrically and fixedly arranged on one side of the supporting plate (74) far away from the Y-shaped support (72), a plurality of universal wheels (81) are uniformly and fixedly arranged at the bottom of the base (1), and each universal wheel (81) comprises a polyurethane edge-covered wheel with a braking function and a silencing function.

9. A counterweight device for fitness apparatus according to claim 1, wherein a cushion (91) is arranged on the top of the base (1), and the cushion (91) is fixedly connected with the base (1).

Technical Field

The invention belongs to the technical field of fitness equipment, and particularly relates to a counterweight device of fitness equipment.

Background

With the development of society and the progress of technology, the working conditions and labor intensity of people are obviously improved, the work with poor working conditions and high labor intensity is basically replaced by machines, and the work of going to and from work and going out is also basically replaced by motor vehicles. But the physical quality of people is worse and worse, and people who are sub-healthy and obese are more and more; as the influence of environmental pollution is increasing, many outdoor fitness exercises are also transferred to indoor exercises in order to enhance physical fitness, and indoor exercise fitness equipment is rapidly developed. The indoor sports fitness equipment has various varieties and different fitness functions; for example, the barbell has wide application, no matter the muscles of shoulders, back, arms, chest and the like, by using the barbell and iron sheets with different weights, and applying a plurality of times of muscle strength special training skills, muscle endurance training is carried out aiming at the muscle group of the whole body, so that fat is burnt and converted into a bodybuilding line, the muscle strength is enhanced, the body core capacity is enhanced, and the muscle which is relaxed at the local part for a long time of exercise is improved; in addition, the health-care product can delay muscle aging, increase bone density, prevent osteoporosis and the like, improve endocrine and improve body coordination, is one of male and female who want to build body and can do exercises. At present, in order to improve the stability of the barbell, the arrangement of the barbell plates is reduced from inside to outside in sequence; when a large weight plate needs to be added, all the weight plates on the barbell bar need to be dismounted and remounted; not only wastes a large amount of time, but also is easy to fall off in the process of disassembling the weight plates, so that the feet of the personnel are injured; therefore, a safe counterweight device for fitness equipment is urgently needed.

Disclosure of Invention

In view of the above, the present invention provides a counterweight device for fitness equipment, so as to solve the deficiencies in the prior art.

The technical scheme of the invention is as follows:

an exercise apparatus counterweight device comprising: a base, a weight box, a plurality of modular weight plate assemblies; the weight box is arranged at one end of the base and is fixedly connected with the base for realizing the storage of the weight plates; the modular weight plate assemblies are respectively and symmetrically arranged at two ends inside the weight box and are used for realizing automatic weight balancing on the barbell bar;

the modular weight plate assembly comprises: the two semi-ring inner sheets are symmetrically arranged at the upper side and the lower side in the weight box; the two semi-ring outer sheets are respectively and symmetrically arranged on the outer sides of the semi-ring inner sheets, and the semi-ring outer sheets are detachably connected with the semi-ring inner sheets and connected with the inner wall of the weight box; the mounting mechanism is arranged on the semi-ring outer sheet and the semi-ring inner sheet and is used for fixing the semi-ring outer sheet and the semi-ring inner sheet on the barbell rod; and the controller is arranged on the base and is electrically connected with the mounting mechanism.

Preferably, the installation mechanism includes that the symmetry sets up two through-holes that are close to semi-ring outer plate one side at the semi-ring inner plate, also the symmetry sets up two screw holes on the semi-ring outer plate and concentric with the through-hole, the connecting pipe is worn to be equipped with by the one end that the through-hole is close to the semi-ring outer plate, the through-hole is located the connecting pipe and has seted up annular heavy groove in the one side of keeping away from the screw hole, be equipped with the spacing ring on the annular heavy groove and rather than sliding connection, connecting pipe one end and spacing ring fixed connection, the other end stretches into in the screw hole and is connected rather than screw-thread fit, six prismatic pole are worn to be equipped with by the one side that the weight box is close to the screw hole, the connecting pipe is kept away from the inside interior hexagonal counter bore of having seted up of one end in the annular heavy groove, six prismatic pole one end is stretched into the screw hole and is connected with the connecting pipe, the other end is equipped with actuating mechanism, be used for realizing that the drive connection pipe is rotatory in screw hole 22, actuating mechanism is connected with the controller electricity.

Preferably, wear to be equipped with the adapter sleeve between two semi-ring inner plates of upper and lower both sides, the adapter sleeve is kept away from the both sides of semi-ring inner plate respectively the symmetry be equipped with two connecting plates and with semi-ring inner plate parallel and level, the semi-ring inner plate is connected with the adapter sleeve, the connecting plate laminating, the bilateral symmetry that the connecting plate is close to the semi-ring inner plate is equipped with two screw rods, the one end and the perpendicular fixed connection of connecting plate of screw rod, the inside screw thread that is equipped with of one end that the connecting pipe is close to the connecting plate, the through-hole that passes of screw rod is connected with the connecting pipe screw-thread fit, the inside of adapter sleeve also is equipped with the screw thread for realize with barbell pole cooperation fixed connection.

Preferably, actuating mechanism includes that even symmetry sets up a plurality of step motor in weight box upper and lower both sides, step motor's output shaft passes the weight box and is connected with hexagonal prism pole, the symmetry is equipped with two extension boards between the step motor of front and back both sides, extension board and weight box vertical fixation are connected, step motor and extension board sliding connection, be equipped with the connecting rod between two extension boards, logical groove has been seted up on the extension board, the connecting rod passes logical groove and step motor fixed connection, be equipped with first cylinder between the hexagonal prism pole of front and back both sides, the inner wall fixed connection of first cylinder and weight box, the output of first cylinder passes the weight box and is connected with the connecting rod, step motor, first cylinder is connected with the controller electricity respectively.

Preferably, the threaded hole is close to the inner wall of one end of the connecting pipe and is respectively provided with a first infrared travel switch and a second infrared travel switch, the inner wall of one end, far away from the threaded hole, of the annular sinking groove is provided with a third travel switch, and the first infrared travel switch, the second infrared travel switch and the third travel switch are respectively and electrically connected with the controller.

Preferably, the weight box is located the both ends outside symmetry of modularization weight plate subassembly and is equipped with two-way cylinders, the inner wall fixed connection of two-way cylinder and weight box, the symmetry is equipped with two support arms respectively between the output of two-way cylinders and respectively rather than fixed connection, the slot has been seted up to one side that the semi-ring outer plate is located semi-ring inner plate top, a plurality of counter bores have evenly been seted up respectively on support arm and the weight box is close to the inner wall on support arm one side, the cantilever is worn to be equipped with and rather than sliding connection in one side of counter bore, the opposite side of counter bore is equipped with the spring, spring one end and cantilever connection, the other end and the interior wall connection of counter bore, the cantilever stretches into the slot and rather than sliding connection, the export has been seted up to one side that the support arm was kept away from to the weight box, two-way cylinder is connected with the controller electricity.

Preferably, the weight box is located the both sides of export and has seted up U type groove, and the outside symmetry in U type groove is equipped with two Y type supports, and base 1 has seted up the spout apart from one side in U type groove, wears to be equipped with the backup pad on the spout, is equipped with the slider in the backup pad, and the inside of slider embedding spout just rather than the cooperation is connected, and the backup pad is located Y type support and is equipped with two second cylinders in the symmetry under, second cylinder and backup pad fixed connection, the most advanced fixed connection of its output and Y type support, the second cylinder is connected with the controller electricity.

Preferably, one side symmetry that Y type support was kept away from to the backup pad has set firmly the universal wheel, and the bottom of base also evenly sets firmly a plurality of universal wheels, and the universal wheel is including the polyurethane edge covering wheel that has brake function and silence function.

Preferably, the top of the base is provided with a soft pad, and the soft pad is fixedly connected with the base.

Compared with the prior art, the counterweight device for the fitness equipment, provided by the invention, can be quickly assembled in the counterweight box through the counterweight weight plates consisting of the semi-ring inner plates and the semi-ring outer plates, so that a large amount of time is saved due to the fact that the weight plates mounted in front need to be disassembled when the weight plates are added, and the safety of personnel training is improved; meanwhile, the weight box can store the weight plates in a centralized manner, so that danger caused by carrying the weight plates by personnel is avoided, and the use convenience is improved; the connecting pipe of the mounting mechanism is used for connecting the semi-ring inner sheet and the semi-ring outer sheet and is matched with a screw on the connecting sleeve for use, and different positions of the connecting pipe are adjusted to mount and dismount the semi-ring inner sheet and the semi-ring outer sheet and fix the semi-ring inner sheet and the semi-ring outer sheet on the connecting plate; the connecting sleeve can improve the installation stability of the weight plates, and avoid the situation that the weight plates are shaken during training due to the clamping of bolts in the conventional installation; the hexagonal prism rod can be controlled to drive the connecting pipe to rotate through the stepping motor and the first air cylinder, so that the condition that a spanner is used for installation manually is avoided, and the installation convenience is improved; the position information of the connecting pipe can be detected through the travel switches, so that a user can be prompted whether the installation is in place conveniently, and the operation safety is improved; the spare modularized weight plate assembly can be hung through the bidirectional cylinder and the movable support arm, and weight plates can be flexibly increased and decreased; the device is simple to operate, convenient to use, high in practicability and worthy of popularization.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a cross-sectional view A-A of the present invention;

FIG. 5 is a cross-sectional view B-B of the present invention;

FIG. 6 is an enlarged schematic view at C of the present invention;

FIG. 7 is an enlarged schematic view of the invention at D;

FIG. 8 is an enlarged schematic view at E of the present invention;

FIG. 9 is an enlarged schematic view at F of the present invention;

fig. 10 is an enlarged schematic view at G of the present invention.

Detailed Description

The invention provides a counterweight device of fitness equipment, which is described below by combining the structural schematic diagrams of figures 1 to 10.

Example 1

As shown in fig. 1, a weight device of an exercise apparatus includes: a base 1; the weight box 2 is arranged at one end of the base 1, and the weight box 2 is fixedly connected with the base 1 and used for storing the weight plates; the modular weight plate assemblies are respectively and symmetrically arranged at two ends inside the weight box 2 and are used for realizing automatic weight balancing on the barbell bar; the modularized weight plates can be flexibly assembled, so that the weight plates are not only prevented from being disassembled, but also the installation efficiency is improved; the modular weight plate assembly comprises: the two semi-ring inner sheets 3 are symmetrically arranged at the upper and lower sides in the weight box 2; the two semi-ring outer sheets 4 are respectively and symmetrically arranged on the outer sides of the semi-ring inner sheets 3, and the semi-ring outer sheets 4 are detachably connected with the semi-ring inner sheets 3 and are connected with the inner wall of the weight box 2; the mounting mechanism is arranged on the semi-ring outer plate 4 and the semi-ring inner plate 3 and is used for fixing the semi-ring outer plate 4 and the semi-ring inner plate 3 on the barbell bar; the counterweight weight plates consisting of the semi-ring inner plates and the semi-ring outer plates can be quickly assembled in the weight box, so that the condition that the weight plates are additionally arranged, the weight plates which are installed in front need to be disassembled, and the safety of personnel training is improved; meanwhile, the weight box can store the weight plates in a centralized manner, so that danger caused by carrying the weight plates by personnel is avoided, and the use convenience is improved; and the controller 5 is arranged on the base 1, and the controller 5 is electrically connected with the mounting mechanism.

When barbell training is needed, the two connecting sleeves are symmetrically fixed on the barbell bar; then the barbell bar is placed on the Y-shaped support and pushed into the U-shaped groove of the weight box through the support plate; the first air cylinder and the bidirectional air cylinder are started through the controller to attach the spare bell plates to the connecting plate, the screw rod extends into the through hole of the semi-ring inner plate, and the stepping motor drives the hexagonal prism rod to rotate the connecting pipe; when only the training amount of the semi-ring inner sheet is needed, the connecting pipe is completely screwed into the through hole; when the outer plates need to be added, the barbell rod is placed on the Y-shaped support and pushed into the counterweight box, the spare semi-ring outer plates are attached to the semi-ring inner plates through the first air cylinder and the two-way air cylinder, the hexagonal prism rod is driven by the stepping motor to rotate reversely, and the connecting pipe is connected with the threaded holes of the semi-ring outer plates.

Example 2

In order to further improve the installation convenience, the connecting pipe is arranged to be connected with the semi-ring outer plate and the semi-ring inner plate, the connecting pipe is rotated to move to different positions through threads, the semi-ring outer plate and the connecting plate are connected, and the weight balancing operation of the barbell rod is carried out.

Preferably, the mounting mechanism comprises two through holes 21 symmetrically formed in one side of the half ring inner plate 3 close to the half ring outer plate 4, two threaded holes 22 are symmetrically formed in the half ring outer plate 4 and are concentric with the through holes 21, a connecting pipe 23 penetrates through one end of the through hole 21 close to the half ring outer plate 4, an annular sinking groove 24 is formed in one side of the connecting pipe 23 far away from the threaded hole 22, a limiting ring 25 is arranged on the annular sinking groove 24 and is in sliding connection with the annular sinking groove, one end of the connecting pipe 23 is fixedly connected with the limiting ring 25, the other end of the connecting pipe extends into the threaded hole 22 and is in threaded fit connection with the threaded hole, a hexagonal prism rod 26 penetrates through one side of the threaded hole 22 close to the weight box 2, an inner hexagonal counter bore 27 is formed in one end of the connecting pipe 23 far away from the annular sinking groove 24, one end of the hexagonal prism rod 26 extends into the threaded hole 22 and is connected with the connecting pipe 23, a driving mechanism is arranged at the other end of the connecting pipe for driving the connecting pipe 23 to rotate in the threaded hole 22, the drive mechanism is electrically connected to the controller 5.

Preferably, a connecting sleeve 31 penetrates through the two semi-ring inner plates 3 on the upper side and the lower side, two connecting plates 32 are symmetrically arranged on two sides of the connecting sleeve 31 far away from the semi-ring inner plates 3 respectively and are flush with the semi-ring inner plates 3, the semi-ring inner plates 3 are attached to the connecting sleeve 31 and the connecting plates 32, two screw rods 33 are symmetrically arranged on two sides of the connecting plates 32 near the semi-ring inner plates 3, one ends of the screw rods 33 are vertically and fixedly connected with the connecting plates 32, threads are arranged inside one ends of the connecting pipes 23 near the connecting plates 32, the screw rods 33 penetrate through the through holes 21 to be in threaded fit connection with the connecting pipes 23, and threads are also arranged inside the connecting sleeve 31 and are used for realizing the fit and fixed connection with the barbell bars; the connecting sleeve can facilitate a user to quickly fix the connecting sleeve on the barbell bar, so that the convenience of operation is improved; can be connected fixedly with semi-ring inner sheet, semi-ring outer plate through connecting plate and screw rod, avoid it to take place to rock.

Example 3

In order to further improve the operation convenience of the counterweight device, an automatic stepping motor and a first air cylinder are arranged to drive the hexagonal prism rod rotating connecting pipe to rotate; in addition, the travel switch can detect the position information of the connecting pipe, and the fixing stability is ensured.

Preferably, the driving mechanism comprises a plurality of stepping motors 41 which are uniformly and symmetrically arranged on the upper side and the lower side of the weight box 2, output shafts of the stepping motors 41 penetrate through the weight box 2 to be connected with the hexagonal prism rods 26, two support plates 42 are symmetrically arranged between the stepping motors 41 on the front side and the rear side, the support plates 42 are vertically and fixedly connected with the weight box 2, the stepping motors 41 are slidably connected with the support plates 42, connecting rods 43 are arranged between the two support plates 42, through grooves 44 are formed in the support plates 42, the connecting rods 43 penetrate through the through grooves 44 to be fixedly connected with the stepping motors 41, first air cylinders 45 are arranged between the hexagonal prism rods 26 on the front side and the rear side, the first air cylinders 45 are fixedly connected with the inner wall of the weight box 2, output ends of the first air cylinders 45 penetrate through the weight box 2 to be connected with the connecting rods 43, and the stepping motors 41 and the first air cylinders 45 are respectively and electrically connected with the controller 5.

Preferably, the inner wall of the threaded hole 22 close to one end of the connecting pipe 23 is respectively provided with a first infrared travel switch 51 and a second infrared travel switch 52, the inner wall of the annular sinking groove 24 far away from one end of the threaded hole 22 is provided with a third travel switch 53, and the first infrared travel switch 51, the second infrared travel switch 52 and the third travel switch 53 are respectively and electrically connected with the controller 5.

Example 4

In order to further improve the use convenience, the spare weight plates can be hung through the support arms, and the support arms can also be positioned when the weight is balanced in the training process, so that the installation accuracy is improved; in addition, the Y-shaped support and the sliding support plate can facilitate the barbell bar to be weighted to be pushed into the weighting box.

Preferably, the weight box 2 is located the both ends outside symmetry of modularization weight plate subassembly and is equipped with two-way cylinders 61, two-way cylinder 61 and the inner wall fixed connection of weight box 2, it is equipped with two support arms 62 and respectively rather than fixed connection to be symmetrical respectively between the output of two-way cylinders 61, slot 63 has been seted up to one side that semi-ring outer plate 4 is located semi-ring inner plate 3 top, a plurality of counter bores 64 have evenly been seted up respectively on the inner wall that support arm 62 one side is close to support arm 62 and support arm 62, cantilever 65 and rather than sliding connection are worn to be equipped with on one side of counter bore 64, the opposite side of counter bore 64 is equipped with spring 66, spring 66 one end is connected with cantilever 65, the other end and the interior wall connection of counter bore 64, cantilever 65 stretches into slot 63 and rather than sliding connection, the export 67 has been seted up to one side that weight box 2 kept away from support arm 62, two-way cylinders 61 are connected with controller 5 electricity.

Preferably, two sides of the weight box 2, which are located at the outlet 67, are provided with U-shaped grooves 71, two Y-shaped supports 72 are symmetrically arranged on outer sides of the U-shaped grooves 71, one side of the base 1, which is away from the U-shaped grooves 71, is provided with sliding grooves 73, supporting plates 74 penetrate through the sliding grooves 73, sliding blocks 75 are arranged on the supporting plates 74, the sliding blocks 75 are embedded in the sliding grooves 73 and are in fit connection with the sliding grooves 73, two second cylinders 76 are symmetrically arranged under the Y-shaped supports 72, the second cylinders 76 are fixedly connected with the supporting plates 74, output ends of the second cylinders are fixedly connected with tips of the Y-shaped supports 72, and the second cylinders 76 are electrically connected with the controller 5; the Y-shaped support driven by the second air cylinder can also be used for pushing and holding training, and a trainer lies on the base and trains through the position and height of the second air cylinder and the supporting plate.

Preferably, universal wheels 81 are symmetrically and fixedly arranged on one side, away from the Y-shaped support 72, of the support plate 74, a plurality of universal wheels 81 are uniformly and fixedly arranged at the bottom of the base 1, and each universal wheel 81 comprises a polyurethane edge-covered wheel with a braking function and a silencing function.

Preferably, the top of the base 1 is provided with a cushion 91, and the cushion 91 is fixedly connected with the base 1.

According to the counterweight device for the fitness equipment, the counterweight weight plates consisting of the semi-ring inner plates and the semi-ring outer plates can be quickly assembled in the counterweight box, so that the problem that when the weight plates are added, the weight plates mounted in front need to be disassembled is avoided, and the safety of personnel training is improved; meanwhile, the weight box can store the weight plates in a centralized manner, so that danger caused by carrying the weight plates by personnel is avoided, and the use convenience is improved; the connecting pipe of the mounting mechanism is used for connecting the semi-ring inner sheet and the semi-ring outer sheet and is matched with a screw on the connecting sleeve for use, and different positions of the connecting pipe are adjusted to mount and dismount the semi-ring inner sheet and the semi-ring outer sheet and fix the semi-ring inner sheet and the semi-ring outer sheet on the connecting plate; the connecting sleeve can improve the installation stability of the weight plates, and avoid the situation that the weight plates are shaken during training due to the clamping of bolts in the conventional installation; the hexagonal prism rod can be controlled to drive the connecting pipe to rotate through the stepping motor and the first air cylinder, so that the condition that a spanner is used for installation manually is avoided, and the installation convenience is improved; the position information of the connecting pipe can be detected through the travel switches, so that a user can be prompted whether the installation is in place conveniently, and the operation safety is improved; the spare modularized weight plate assembly can be hung through the bidirectional cylinder and the movable support arm, and weight plates can be flexibly increased and decreased; the device is simple to operate, convenient to use, high in practicability and worthy of popularization.

The above disclosure is only for the preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.