Portal frame structure for linear constant-speed force measurement

Abstract

The utility model discloses a portal frame structure for linear constant-speed force measurement, which comprises a portal frame body, a sliding piece and a limiting piece, the sliding piece is arranged on the portal frame body, is connected with a barbell rod on the portal frame body and is used for assisting the barbell rod to slide up and down, and the limiting piece is arranged on the sliding piece and is used for limiting the sliding stroke of the lower end of the barbell rod. The portal frame body serves as an integral frame for linear constant-speed force measurement and also serves as a barbell rod moving supporting body, the barbell rod moves up and down on the portal frame body in a reciprocating mode through the sliding piece, the moving stability and continuity of the barbell rod are enhanced, the barbell rod adjusts the sliding stroke through the limiting piece, the requirements of different testers are met, and the testing efficiency is improved. And meanwhile, the limiting piece can also ensure that the barbell rod moves within a set range, so that the injury to the trainee after the movement exceeds the range is avoided. And the sliding piece can fix the barbell rod on the portal frame body in multiple ways, so that the use safety of the barbell rod is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of muscle strength testing, in particular to a gantry structure for linear isokinetic muscle strength testing. Background Technique

[0002] Skeletal muscle is the muscle attached to the bones. Skeletal muscle not only plays a role in maintaining the human body posture and assisting movement, but also has functions such as sugar storage and endocrine. When skeletal muscle atrophies, it will not only reduce the motor function, but also easily cause metabolic diseases such as diabetes. For people who do not often participate in sports, the muscle mass peaks at about 20-25 years old, and then gradually decreases with the increase of age, and the motor ability will also gradually decline accordingly. Therefore, many people are carrying out exercise training aimed at increasing muscle mass in order to maintain or improve their motor ability.

[0003] Resistance strength training is an important method to exercise and improve the human skeletal muscle mass. However, it is not that as long as resistance strength training is carried out, the skeletal muscle mass can be increased. Among the training elements that stimulate skeletal muscle growth, mobilizing fast-twitch muscles that are easy to thicken is a necessary condition. Therefore, the American College of Sports Medicine (ACSM) once pointed out that when performing traditional resistance training, only an intensity of ≥70% 1RM can promote muscle hypertrophy. In addition, the human body realizes movement through the contraction of skeletal muscles that span the bones on both sides of the joint. Since skeletal muscles can only exert force in one direction and belong to linear force, while the movement of joints belongs to rotational movement, from a biomechanical perspective, when the human joints are at different angles, the forces exerted will be very different. For example, in the squatting and standing up movement, with the change of the lower limb joint angle, the maximum force shows a large difference. That is to say, in the weight-bearing squatting exercise aimed at increasing muscle mass, a certain weight-bearing may be the best muscle-building load weight when the knee joint is in deep squat, but the load will be too small when in shallow squat. If we want to exercise all the muscles of the quadriceps femoris through the squatting method, we need to measure the maximum force at different knee joint angles and train separately at different knee joint angles. This will not only consume a lot of physical strength, but also bear a great risk of injury during the process of measuring the maximum force.

[0004] In addition, eccentric training is also an important training method for rapid muscle gain and strength improvement. Eccentric training refers to the method of lengthening the muscle while it is exerting force. Research has confirmed that in eccentric training, fast-twitch muscle fibers that are prone to thickening are preferentially mobilized, and each muscle fiber can generate a force 1.5 - 1.8 times that of the maximum isometric contraction. Therefore, eccentric training can achieve the goal of rapid muscle gain. When performing eccentric training, it is not necessary to use a large amount of force or explosive force to obtain results. Instead, slowly lengthening the muscle while exerting force is more effective. In traditional resistance eccentric training, the speed often needs to be controlled by oneself, and the load weight is constant. As mentioned above, at different joint angles, the muscles mobilized and the strength exerted are not the same. If a barbell with a constant weight is used, the desired training effect cannot be obtained. Therefore, if there is a device that can quickly measure the maximum strength at different joint angles under the condition of ensuring safety, and can change the load size throughout the process during the change of joint angles to achieve linear isokinetic testing, it can not only greatly improve the targeted effect of muscle gain, but also reduce the risk of injury. Summary of the Invention

[0005] The purpose of the present utility model is to provide a gantry structure for linear isokinetic force measurement, which is suitable for linear isokinetic force measurement and improves the safety of using the barbell rod.

[0006] To achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0007] A gantry structure for linear isokinetic force measurement includes a gantry frame body, a sliding member, and a limiting member. The sliding member is arranged on the gantry frame body and is connected to the barbell rod on the gantry frame body to assist the barbell rod to slide up and down. The limiting member is arranged on the sliding member to limit the sliding stroke of the lower end of the barbell rod.

[0008] Further, the sliding member includes a sliding rod respectively arranged on both sides of the gantry frame body and a sliding sleeve slidably sleeved on each sliding rod. Both ends of the barbell rod are respectively connected to a sliding sleeve and slide up and down on the sliding rod.

[0009] Further, a sliding fixing member is arranged on the sliding sleeve, and a sliding fixing rod is respectively arranged on both sides of the gantry frame body. The sliding fixing member is connected to the sliding fixing rod.

[0010] Further, a slot adapted to the sliding fixing rod is opened on the sliding fixing member. Two insertion holes are symmetrically arranged on the two slot walls of the slot. A plurality of limiting holes are evenly distributed in the vertical direction of the sliding fixing rod. The sliding fixing member is clamped on the sliding fixing rod through the slot, and the two insertion holes communicate with the limiting holes and are fixed by a bolt.

[0011] Further, the sliding member further includes a connecting member arranged on the sliding sleeve. A barbell rod sleeve for sleeving the barbell rod is arranged on the connecting member.

[0012] Further, the limiting member includes a limiting sleeve movably sleeved on the sliding rod and a limiting strip provided on the limiting sleeve, and the limiting strip is clamped and fixed on the gantry frame body.

[0013] Further, a limiting fixing rod is respectively provided on both sides of the gantry frame body. A clamping hole is formed on the limiting strip, and a plurality of limiting posts adapted to the clamping hole are uniformly distributed in the vertical direction of the limiting fixing rod. The limiting strip clamps the clamping hole on the limiting post through the movement of the limiting sleeve.

[0014] Further, two hooks adapted to the limiting posts are movably sleeved at both ends of the barbell rod, and the barbell rod is clamped and fixed on two limiting posts at the same height through the hooks at both ends.

[0015] Further, two handholds are provided on the gantry frame body.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model includes a gantry frame body, a sliding member and a limiting member. The gantry frame body serves as an overall framework for linear isokinetic force measurement and is also a moving support for the barbell rod. The barbell rod moves up and down reciprocally on the gantry frame body through the sliding member, enhancing the moving stability and coherence of the barbell rod. The barbell rod adjusts the lower limit of sliding through the limiting member, which not only meets the needs of different testers but also improves the accuracy of the test. At the same time, the limiting member ensures that the barbell rod moves within a set range, avoiding the harm caused to the trainer after the movement exceeds the range. The sliding member can also fix the barbell rod multiple times on the gantry frame body, improving the use safety of the barbell rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural diagram of the utility model.

[0019] Figure 2 is an anatomical diagram of the utility model.

[0020] Figure 3 is a structural diagram of the sliding sleeve of the utility model.

[0021] Among them, the names corresponding to the reference numerals are:

[0022] 1 - gantry frame body, 2 - sliding member, 3 - limiting member, 4 - barbell rod, 5 - sliding fixing rod, 6 - limiting fixing rod, 7 - limiting post, 8 - hook, 9 - handhold, 21 - sliding rod, 22 - sliding sleeve, 23 - sliding fixing member, 24 - clamping groove, 25 - jack, 26 - connecting member, 27 - barbell rod sleeve, 31 - limiting sleeve, 32 - limiting strip, 33 - clamping hole, 51 - limiting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; of course, it can also be a mechanical connection or an electrical connection; in addition, it can also be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] As Figures 1 - 3 shown, a gantry structure for linear isokinetic force measurement provided by the present utility model includes a gantry body 1, a sliding member 2 and a limiting member 3. The sliding member 2 is arranged on the gantry body 1 and connected to a barbell rod 4 on the gantry body 1 to assist the barbell rod 4 in sliding up and down. The limiting member 3 is arranged on the sliding member 2 to limit the sliding stroke of the lower end of the barbell rod 4.

[0027] The gantry body 1 serves as the overall framework for linear isokinetic force measurement and is also the moving support body of the barbell rod 4. The barbell rod 4 makes reciprocating up and down movements on the gantry body 1 through the sliding member 2, enhancing the moving stability and coherence of the barbell rod 4. The sliding stroke of the barbell rod 4 is adjusted by the limiting member 3, which not only meets the needs of different testers but also improves the accuracy of the test. The sliding member 2 can also fix the barbell rod 4 multiple times on the gantry body 1, improving the safety of using the barbell rod.

[0028] In one of the embodiments, a more detailed structure of the sliding member 2 is provided: The sliding member 2 includes a slide bar 21 respectively arranged on both sides of the gantry frame body 1 and a sliding sleeve 22 slidably sleeved on each slide bar 21. Both ends of the barbell rod 4 are respectively connected to a sliding sleeve 22 and slide up and down on the slide bar 21. The stability and coherence of the up-and-down sliding of the barbell rod 4 are improved by the sliding sleeve 22.

[0029] In one of the embodiments, a more detailed structure of the sliding sleeve 22 is provided: A sliding fixing member 23 is arranged on the sliding sleeve 22, and a sliding fixing rod 5 is respectively arranged on both sides of the gantry frame body 1. The sliding fixing member 23 is connected to the sliding fixing rod 5. The barbell rod 4 can be fixed on the sliding fixing rod 5 through the sliding fixing member 23. On the one hand, it can avoid safety accidents such as the barbell rod 4 falling off when not in use. On the other hand, the initial height of the barbell rod 4 can be adjusted and fixed according to the height of the tester or the force measurement stroke before force measurement, enhancing its use safety.

[0030] Preferably, the detachable connection mode between the sliding fixing member 23 and the sliding fixing rod 5 is as follows: A clamping groove 24 adapted to the sliding fixing rod 5 is formed on the sliding fixing member 23. Two insertion holes 25 are symmetrically arranged on the two groove walls of the clamping groove 24. A plurality of limiting holes 51 are evenly distributed in the vertical direction of the sliding fixing rod 5. The sliding fixing member 23 is clamped on the sliding fixing rod 5 through the clamping groove 24, and the two insertion holes 25 are communicated with the limiting holes 51 and fixed by a bolt.

[0031] In one of the embodiments, a more detailed structure of the sliding member 2 is provided: The sliding member 2 further includes a connecting member 26 arranged on the sliding sleeve 22, and a barbell rod sleeve 27 for sleeving the barbell rod 4 is arranged on the connecting member 26. The barbell rod 4 is connected to the sliding sleeve 22 through the barbell rod sleeve 27, and the connection is a detachable connection by sleeving, which is convenient for the maintenance and replacement of each component.

[0032] In one of the embodiments, a more detailed structure of the limiting member 3 is provided: The limiting member 3 includes a limiting sleeve 31 movably sleeved on the slide bar 21 and a limiting strip 32 arranged on the limiting sleeve 31. The limiting strip 32 is clamped on the gantry frame body 1. The lowest point of the barbell rod 4 on the slide bar 21 can be adjusted through the limiting sleeve 31 and the limiting strip 32, and then the force measurement stroke of the barbell rod 4 can be adjusted. The limiting sleeves 31 at both ends should be kept at the same height.

[0033] Preferably, the limiting strip 32 is fixed to the gantry frame 1 as follows: A limiting fixing rod 6 is provided on each side of the gantry frame 1. A positioning hole 33 is formed in the limiting strip 32. A plurality of limiting posts 7 adapted to the positioning hole 33 are evenly distributed in the vertical direction of the limiting fixing rod 6. The limiting strip 32 fixes the positioning hole 33 on the limiting posts 7 by moving the limiting sleeve 31. Adjust the lowest point of the barbell rod 4 on the sliding rod 21 by moving the limiting sleeve 31 up and down, and then fix the positioning hole 33 of the limiting strip 32 on the limiting post 7 at the corresponding height by rotating the limiting sleeve 31.

[0034] In one of the embodiments, a more detailed structure of the barbell rod 4 is provided: Two hooks 8 adapted to the limiting posts 7 are movably sleeved at both ends of the barbell rod 4. The barbell rod 4 is fixed to two limiting posts 7 at the same height by the hooks 8 at both ends. The barbell rod 4 can be fixed by the hooks 8. This method can not only cooperate with the sliding fixing member 23 to achieve double fixation, but also be implemented independently during use, and the operation is simpler.

[0035] In one of the embodiments, a more detailed structure of the gantry frame 1 is provided: Two handrails 9 are provided on the gantry frame 1 for performing exercises such as pull-ups. Preferably, a force sensor is installed on the handrail 9 to facilitate the detection of force during training.

[0036] Finally, it should be noted that: The above embodiments are only relatively preferred embodiments of the present invention to illustrate the technical solutions of the present invention, rather than limiting it, and certainly not limiting the patent scope of the present invention; Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention; That is to say, any meaningless changes or touch-ups made in the main design concept and spirit of the present invention, as long as the technical problems solved are still the same as those of the present invention, should be included in the protection scope of the present invention; In addition, directly or indirectly applying the technical solutions of the present invention to other related technical fields shall also be included in the patent protection scope of the present invention by the same token.

Claims

1. A gantry structure for linear constant-speed force measurement, characterized in that, It includes a gantry frame body (1), a sliding member (2) and a limiting member (3). The sliding member (2) is arranged on the gantry frame body (1) and is connected to a barbell rod (4) on the gantry frame body (1) to assist the barbell rod (4) to slide up and down. The limiting member (3) is arranged on the sliding member (2) to limit the sliding stroke of the lower end of the barbell rod (4).

2. The gantry structure for linearly constant-speed force measurement according to claim 1, wherein, The sliding member (2) includes a slide bar (21) respectively arranged on both sides of the gantry frame body (1) and a sliding sleeve (22) slidably sleeved on each slide bar (21). Both ends of the barbell rod (4) are respectively connected to a sliding sleeve (22) and slide up and down on the slide bar (21).

3. The gantry structure for linear constant-speed force measurement according to claim 2, characterized in that, A sliding fixing member (23) is arranged on the sliding sleeve (22). A sliding fixing rod (5) is respectively arranged on both sides of the gantry frame body (1). The sliding fixing member (23) is connected to the sliding fixing rod (5).

4. A gantry structure for linear constant-speed force measurement according to claim 3, characterized in that, A slot (24) adapted to the sliding fixing rod (5) is formed on the sliding fixing member (23). Two insertion holes (25) are symmetrically arranged on the two slot walls of the slot (24). A plurality of limiting holes (51) are evenly distributed in the vertical direction of the sliding fixing rod (5). The sliding fixing member (23) is clamped on the sliding fixing rod (5) through the slot (24), and the two insertion holes (25) communicate with the limiting holes (51) and are fixed by a bolt.

5. A gantry structure for linear constant-speed force measurement according to claim 2, characterized in that, The sliding member (2) further includes a connecting member (26) arranged on the sliding sleeve (22). A barbell rod sleeve (27) for sleeving the barbell rod (4) is arranged on the connecting member (26).

6. The gantry structure for linear constant-speed force measurement according to claim 2, characterized in that, The limiting member (3) includes a limiting sleeve (31) movably sleeved on the slide bar (21) and a limiting strip (32) arranged on the limiting sleeve (31). The limiting strip (32) is clamped on the gantry frame body (1).

7. A gantry structure for linear constant-speed force measurement according to claim 6, characterized in that, A limiting fixing rod (6) is respectively arranged on both sides of the gantry frame body (1). A clamping hole (33) is formed on the limiting strip (32). A plurality of limiting posts (7) adapted to the clamping hole (33) are evenly distributed in the vertical direction of the limiting fixing rod (6). The limiting strip (32) clamps the clamping hole (33) on the limiting posts (7) by moving the limiting sleeve (31).

8. A gantry structure for linear constant-speed force measurement according to claim 7, characterized in that, Two hooks (8) adapted to the limiting posts (7) are movably sleeved at both ends of the barbell rod (4). The barbell rod (4) is clamped on the two limiting posts (7) at the same height by the hooks (8) at both ends.

9. A gantry structure for linear constant-speed force measurement according to claim 1, characterized in that, Two handles (9) are arranged on the gantry frame body (1).

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