Fall prevention test device

Abstract

The invention discloses a fall prevention test device, comprising a frame, a scaffolding guide rail assembly and a counterweight, wherein a balancing mechanism is provided at the upper end of the frame, a steel rope is sleeved on the balancing mechanism, the scaffolding guide rail assembly is installed at the front side of the frame, the counterweight is fixed on the scaffolding fall prevention assembly, and the head end of the steel rope is connected to the scaffolding fall prevention assembly; a tensioning mechanism is provided at the lower part of the frame, a movable pulley assembly is provided on the tensioning mechanism, the end of the steel rope is connected to a lower hanging plate and sleeved on the movable pulley assembly, and the movable pulley assembly is used to pull the counterweight through the steel rope by the movable pulley assembly, and the movable pulley assembly is locked by the tensioning mechanism to make the counterweight stationary, and when the tensioning mechanism unlocks the movable pulley assembly, the counterweight is made to fall, so as to solve the problem that the fall arrester cannot be effectively tested to confirm its working performance during the actual research and development process.

Description

Technical Field

[0001] The invention relates to a fall prevention equipment test, in particular to a fall prevention test device. Background Art

[0002] A lifting scaffold is a scaffold installed on the exterior wall of a building. Since the fulcrum of the scaffold frame is on the building structure, it is not necessary to build the frame from the bottom to the top, so it is more suitable for use in high-rise building construction. However, it is precisely because its fulcrum is on the building structure that its rising, falling and static stability are closely related to the guide support seat attached to the exterior wall, and such a guide support seat needs to be installed with an anti-fall structure. The currently commonly used anti-fall structure is to cooperate with the anti-fall cross bar on the guide rail through the anti-fall fork wheel. When a fall occurs, the ratchet wheel and the ratchet pawl coaxially installed with the anti-fall wheel form an engagement, so that the anti-fall fork wheel cannot continue to rotate and forms an engagement with the anti-fall cross bar on the guide rail, thereby preventing the frame from continuing to fall. It should be noted that since the anti-fall fork and the anti-fall cross bar are in linear contact, the force area is small, which makes it easy for the anti-fall fork to be subjected to greater impact and pressure when the frame falls, affecting the stability of the anti-fall structure in the guide support seat. Therefore, the applicant of this patent began to study a new type of scaffolding anti-fall mechanism to replace the aforementioned structure. Since the anti-fall mechanism is related to the safety of the use of the lifting scaffold, in the process of studying such an anti-fall mechanism, it is necessary to also study and improve the test equipment of the anti-fall structure. Summary of the invention

[0003] The object of the present invention is to provide a fall arresting test device, so as to solve the problem that the fall arresting device cannot be effectively tested to confirm its working performance during the actual research and development process.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A fall prevention test device comprises a frame, a scaffolding guide rail assembly and a counterweight, wherein a balancing mechanism is provided at the upper end of the frame, a steel rope is sleeved on the balancing mechanism, the scaffolding guide rail assembly is installed at the front side of the frame, the counterweight is fixed on the scaffolding guide rail assembly, and the head end of the steel rope is connected to the scaffolding guide rail assembly; a tensioning mechanism is provided at the lower part of the frame, a pulley assembly is provided on the tensioning mechanism, the end of the steel rope is connected to a lower hanging plate, and is sleeved on the pulley assembly, which is used for the lower hanging plate to be externally connected to an electric hoist, and the pulley assembly is used to pull the scaffolding guide rail assembly through the steel rope, and the tensioning mechanism locks the pulley assembly, so that the scaffolding guide rail assembly moves up and down with the pulling of the steel rope, and when the tensioning mechanism unlocks the pulley assembly, the scaffolding guide rail assembly falls.

[0006] Preferably, the scaffolding guide rail assembly includes a guide rail column, the counterweight is fixed on the front side of the guide rail column, the head end of the steel rope is connected to the upper end of the guide rail column, a guide rail is provided on the rear side of the guide rail column, at least one guide seat is provided on the frame body, the guide rail is placed in the track slide groove of the guide seat, and the guide rail also cooperates with the anti-fall arm in the guide seat.

[0007] A further technical solution is that a counterweight hanger is provided on the front side of the guide rail column, the end of the counterweight hanger is fixed on the guide rail column, a counterweight hanger seat is provided at the front end of the counterweight hanger, and the counterweight is suspended at the lower end of the counterweight hanger seat.

[0008] Preferably, the tensioning mechanism comprises a fixed bracket, which is mounted on a frame body; the pulley assembly comprises a support seat, a movable pulley is mounted on the support seat, and the support seat is movably mounted on the frame body; a rocker arm for pressing down the support seat is provided on the fixed bracket, and a release handle is provided on one side of the rocker arm for the release handle to contact and lock the rocker arm.

[0009] A further technical solution is that a limit block is provided at the end of the swing rod, and a limit portion corresponding to the limit block is provided at the front end of the release handle, so that the limit portion abuts against the limit block.

[0010] A further technical solution is that a handle fixing seat is provided on the release handle, and the handle fixing seat is installed on the frame body, so that the handle fixing seat serves as a supporting point of the release handle.

[0011] Preferably, the balancing mechanism comprises a housing and a pulley. The housing is fixed on a frame. The pulley is located in the housing. A fixed shaft is provided in the housing. A bearing is provided on the fixed shaft. The pulley sleeve is provided on the bearing.

[0012] A further technical solution is that the pulley is hollow, the movable end of the bearing is connected to the pulley, and the fixed end of the bearing is connected to the fixed shaft.

[0013] Preferably, a buffer pad is provided at the bottom of the frame, a fixing hole is provided in the buffer pad, a limit frame is provided on the frame, and a screw hole corresponding to the fixing hole is provided in the limit frame for the buffer pad to contact the ground.

[0014] Preferably, the lower hanging plate is fixed on the frame, and an upper hanging plate is also fixed on the frame. The upper hanging plate is placed above the lower hanging plate and is used to hang the electric hoist from the upper hanging plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are at least one of the following:

[0016] The frame of the present invention serves as a supporting unit, and the counterweight is suspended on the scaffolding guide rail assembly. The load-bearing capacity of the scaffolding guide rail assembly is tested by adjusting the counterweight. The pulley assembly is convenient for pulling the counterweight through the steel rope and the balancing mechanism. The end of the steel rope is suspended through the lower hanging plate to keep the counterweight in a stationary state. The pulley assembly is locked or released through the tensioning mechanism, thereby tensioning / loosening the steel rope to make the counterweight fall, so that the pressure of the counterweight acts on the scaffolding guide rail assembly for testing.

[0017] The present invention supports the counterweight by means of the guide rail column, and limits the moving path of the guide rail column by means of the guide rail and the guide seat, so that the force direction is controllable; the guide rail column is driven to fall by means of the counterweight, and fall prevention is achieved by means of the guide rail and the guide seat.

[0018] The present invention uses a counterweight hanger to leave a safe distance between the counterweight and the guide rail column, thereby preventing the guide rail column from colliding with the counterweight during movement. The counterweight is suspended by the counterweight hanger to ensure that the pulling force applied to the guide rail column by the counterweight is vertically downward, which is beneficial to the stability and accuracy of the test.

[0019] The present invention presses down the swing rod by releasing the handle, and drives the support seat downward through the swing rod, so that the pulley assembly presses down the steel rope, ensuring that the steel rope is in a straight state, which is beneficial to the test safety and stability; and the limit block and the limit part are mutually in conflict with each other, which is easy to lock / release; the present invention makes it convenient for the user to apply a pulling force by releasing the handle, and uses the handle fixing seat as a fulcrum. The user drives the limit block to conflict with or separate from the limit part through the lever principle, thereby reducing the force required by the user for locking / releasing.

[0020] The present invention installs the buffer pad on the bottom of the frame body through the fixing hole and the limiting frame, and reduces the impact on the ground during the test process through the buffer pad, which is beneficial to protecting the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structural distribution of the present invention.

[0022] Figure 2 for Figure 1 Schematic diagram of scaffolding rail assembly installation.

[0023] Figure 3 for Figure 2 Schematic diagram of counterweight hanger installation.

[0024] Figure 4 for Figure 1 Schematic diagram of the tensioning mechanism structure distribution.

[0025] Figure 5 for Figure 1 Schematic diagram of the tensioning mechanism structure.

[0026] Figure 6 for Figure 1Schematic diagram of the working of the balancing mechanism.

[0027] Figure 7 for Figure 6 Schematic diagram of pulley installation.

[0028] Figure 8 This is a schematic diagram of the installation of the buffer pad of the present invention.

[0029] Description of reference numerals:

[0030] 1-frame, 2-counterweight, 3-balancing mechanism, 4-steel rope, 5-scaffolding guide rail assembly, 6-tensioning mechanism, 7-pulley assembly, 8-upper hanging plate, 9-lower hanging plate, 10-buffer pad, 11-fixing hole, 12-limiting frame, 301-shell, 302-pulley, 303-fixed shaft, 304-bearing, 501-guide rail column, 502-guide rail, 503-guide seat, 504-counterweight hanger, 505-counterweight hanger, 601-fixed bracket, 602-swing rod, 603-release handle, 604-limiting block, 605-limiting part, 606-handle fixing seat, 701-support seat. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] Embodiment 1:

[0033] refer to Figure 1 , Figure 2 As shown, one embodiment of the present invention is a fall prevention test device, comprising a frame 1 and a counterweight 2, wherein the frame 1 is a steel frame made of existing steel materials, and the force-bearing part of the frame 1 adopts a triangular structure to improve the stability of the frame 1 itself; wherein the counterweight 2 is an existing counterweight box, so that during the test process, cement, iron blocks and other weight-increasing objects can be added / reduced as needed, thereby selectively controlling the load of the counterweight 2 in the test.

[0034] A balancing mechanism 3 is provided at the upper end of the frame 1, and a steel rope 4 is sleeved on the balancing mechanism 3, and two interacting force-bearing parts are formed at both ends of the balancing mechanism 3 through the steel rope 4. A scaffolding rail assembly 5 is provided on the front side of the frame 1, and the counterweight 2 is fixed on the scaffolding rail assembly 5. A falling force is applied to the scaffolding rail assembly 5 through the counterweight 2, thereby driving the scaffolding rail assembly 5 to fall, thereby providing a test environment for the anti-falling performance of the scaffolding rail assembly 5 during the falling process.

[0035] The head end of the steel rope 4 is connected to the scaffolding guide rail assembly 5; the counterweight 2 is connected to the steel rope 4 through the scaffolding guide rail assembly 5, so that when the counterweight 2 is suspended in the air, the steel rope 4 is used to pull and apply a pulling force to the scaffolding guide rail assembly 5, so that the counterweight 2 is suspended and stationary, and the scaffolding guide rail assembly 5 is prevented from falling due to the influence of the counterweight 2; more specifically, at this time, the pulling force of the steel rope 4 and the gravity of the counterweight 2 itself form a combined external force and act on the scaffolding guide rail assembly 5, so that the counterweight 2 and the scaffolding guide rail assembly 5 are both in a stationary state.

[0036] The steel rope 4 passes through the balancing mechanism 3, and the force direction of the end of the steel rope 4 is opposite to the gravity, and the force direction of the head end of the steel rope 4 is vertically upward. A tensioning mechanism 6 is provided at the lower part of the above-mentioned frame 1, and a pulley assembly 7 is provided on the above-mentioned tensioning mechanism 6. The pulley assembly 7 has a movable pulley, and the steel rope 4 is sleeved on the movable pulley of the pulley assembly 7, and the force direction of the head end of the steel rope 4 is changed by the movable pulley to make it vertically downward; the end of the above-mentioned steel rope 4 is connected to the lower hanging plate 9 and sleeved on the pulley assembly 7, which is used for the lower hanging plate 9 to be externally connected to the electric hoist, wherein the lower hook of the electric hoist is connected to the lower hanging plate 9, wherein the electric hoist is fixed on the frame 1, and is used for the pulley assembly 7 to pull the scaffolding guide rail assembly 5 through the steel rope 4, and the pulley assembly 7 is locked by the tensioning mechanism 6, so that the scaffolding guide rail assembly 5 is pulled up and down with the steel rope 4, and when the tensioning mechanism 6 unlocks the pulley assembly 7, the scaffolding guide rail assembly 5 falls.

[0037] Specifically, the head end of the steel rope 4 is connected to the scaffolding guide rail assembly 5, and the steel rope 4 is fixed on the lower hanging plate 9 through the pulley assembly 7. The steel rope 4 is sleeved on the pulley assembly 7. On the one hand, the force direction of the steel rope 4 is adjusted and changed by the pulley assembly 7. When the steel rope 4 is taut, the lower hanging plate 9 bears the tension at the end of the load steel rope 4; when the tensioning mechanism 6 locks the pulley assembly 7, the steel rope 4 is in a taut state on the pulley assembly 7, and the force can be accurately transmitted. At this time, the pulley assembly 7 does not move, and the pulley assembly 7 plays the role of a fixed pulley. Under the action of the pulley assembly 7, the tension and pressure received by the scaffolding guide rail assembly 5 are the same; that is, the scaffolding guide rail assembly 5 is in a non-falling state, and the counterweight 2 is in a static state, and the tension borne by the lower hanging plate 9 is proportional to the gravity borne by the counterweight 2.

[0038] Among them, an upward pulling force is applied to the downward hanging plate 9 through the electric hoist, so that the scaffolding guide rail assembly 5 and the steel rope 4 are easily tightened; when its tensioning mechanism 6 unlocks the pulley assembly 7, the steel rope 4 is in a relaxed state on the pulley assembly 7, and the tension generated by the steel rope 4 cannot effectively act on the scaffolding guide rail assembly 5. At this time, the scaffolding guide rail assembly 5 is affected by the falling of the counterweight 2, and the scaffolding guide rail assembly 5 will simulate the falling state, and the scaffolding guide rail assembly 5 begins to self-lock during the falling process, and the anti-fall mechanism is tested and detected according to the self-locking situation.

[0039] Embodiment 2:

[0040] Based on the above embodiments, reference Figure 2 , Figure 3 As shown, another embodiment of the present invention is that the above-mentioned scaffolding guide rail assembly 5 includes a guide rail column 501, the above-mentioned counterweight 2 is fixed on the front side of the guide rail column 501, the head end of the above-mentioned steel rope 4 is connected to the upper end of the guide rail column 501, the rear side of the above-mentioned guide rail column 501 is provided with a guide rail 502, and the above-mentioned frame body 1 is provided with at least one guide seat 503, and the anti-fall arm of the above-mentioned guide seat 503 is engaged with the guide rail 502.

[0041] Among them, the guide seat 503 is an existing guide seat, and its guide rail 502 has a slide groove adapted to the anti-fall arm, the anti-fall arm is inserted into the slide groove, and there is an anti-fall cross bar in the slide groove; the anti-fall arm and the trigger swing arm are installed inside the seat body of the guide seat. When the frame falls, the anti-fall cross bar moves downward quickly. Under its movement, the anti-fall arm is driven to swing downward through the trigger swing arm matching the anti-fall arm. After the anti-fall arm rotates downward, it cannot be reset and immediately engages with the next anti-fall cross bar, thereby preventing the frame from continuing to fall.

[0042] It should be noted that, in order to ensure the stability of the movement of the guide rail 502, the length of the slide groove of the guide rail 502 is greater than or equal to the moving distance of the counterweight 2.

[0043] Furthermore, in order to ensure that the resultant external force is directed vertically downward, the center of gravity of the counterweight 2 coincides with the central axis of the counterweight 2 to avoid deflection of the direction of the resultant external force. A counterweight hanger 504 is provided on the front side of the guide rail column 501, wherein the counterweight hanger 504 is triangular and can be an existing triangular bracket. The end of the counterweight hanger 504 is fixed on the guide rail column 501, and the fixing method can be welding or bolt connection. Since the counterweight 2 has a certain volume, a sufficient safety distance is set between the counterweight 2 and the guide rail column 501 to avoid the counterweight 2 contacting the guide rail column 501.

[0044] A counterweight hanger 505 is provided at the front end of the counterweight hanger 504, and the counterweight 2 is suspended at the lower end of the counterweight hanger 505. The counterweight 2 is fixed to the front end of the counterweight hanger 504 through the counterweight hanger 505 to ensure that the center of gravity of the counterweight 2 coincides with the central axis of the counterweight 2. Combined with the extension of the counterweight hanger 504, a safe distance between the counterweight 2 and the guide rail column 501 is ensured, effectively avoiding the external force offset of the counterweight 2 during the lifting process, so that the counterweight 2 and the guide rail column 501 can work stably.

[0045] Embodiment 3:

[0046] Based on the above embodiments, reference Figure 4 , Figure 5As shown, another embodiment of the present invention is that the above-mentioned tensioning mechanism 6 includes a fixed bracket 601, and the above-mentioned fixed bracket 601 is installed on the frame 1, and the installation method of the fixed bracket 601 can be bolted or welded; the above-mentioned pulley assembly 7 includes a support seat 701, and a movable pulley is installed on the support seat 701, that is, the support seat 701 is wrapped around both sides of the movable pulley of the pulley assembly 7, so that the support seat 701 does not block / impede the moving path of the steel wire 4.

[0047] The fixed bracket 601 is provided with a rocker arm 602 for pressing down the support seat 701, and a release handle 603 is provided on one side of the rocker arm 602, which is used for the release handle 603 to contact and lock the rocker arm 602; when the release handle 603 contacts and locks the rocker arm 602, the support seat 701 enables the movable pulley on the pulley assembly 7 to realize the role of the fixed pulley to ensure that the counterweight 2 does not drive the guide rail to fall.

[0048] Among them, the front end of the pendulum rod 602 is installed on the fixed bracket 601 through a movable bolt, so that the pendulum rod 602 can swing up and down, and the lower part of the support seat 701 is provided with a strip through hole, and the pendulum rod 602 passes through the strip through hole, and the end of the pendulum rod 602 contacts the release handle 603, and the release handle 603 resists and locks the pendulum rod 602.

[0049] For further reference, Figure 5 As shown, in order to enable the release handle 603 to relatively stably lock the rocker arm 602, a limit block 604 is provided at the end of the rocker arm 602, and a limit portion 605 corresponding to the limit block 604 is provided at the front end of the release handle 603, so that the limit portion 605 abuts against the limit block 604; when working, the movable pulley of the pulley assembly 7 contacts the steel rope 4, and the limit portion 605 of the release handle 603 is inserted into the rocker arm 602, and the limit screw of the limit portion 605 abuts against the upper end of the limit block 604. At this time, the lower end of the rocker arm 602 abuts against the bottom of the strip through hole of the support seat 701, thereby driving the support seat 701, so that the pulley assembly 7 is in a fixed state, which is conducive to tightening the steel rope 4.

[0050] When the limiting part 605 of the release handle 603 leaves the limiting block 604, the steel rope 4 is in a relaxed state, the pulley assembly 7 is affected by the steel rope 4, the pulley assembly 7 moves upward, and the support seat 701 drives the rocker arm 602 to lift, wherein the limiting block 604 has a hook at the lower end, which hooks the support seat 701, on the one hand, to prevent the support seat 701 from falling off, and on the other hand, to tighten the steel rope 4 after it is relaxed, thereby preventing the counterweight 2 from falling to the ground.

[0051] Furthermore, the release handle 603 is provided with a handle fixing seat 606 , which is installed on the frame 1 and is used as a support point for the release handle 603 , so that the operator can easily separate the limiting part 605 from the limiting block 604 .

[0052] Embodiment 4:

[0053] Based on the above embodiments, reference Figure 6 As shown, one embodiment of the present invention is that the balancing mechanism 3 includes a shell 301 and a pulley 302, wherein there are two pulleys 302, which can extend the distance between the steel rope 4 and the frame 1 on the one hand, and ensure the symmetry of the double reaction force on the other hand. The shell 301 is fixed on the frame 1, and the pulley 302 is located in the shell 301. A fixed shaft 303 is provided in the shell 301, and a bearing 304 is provided on the fixed shaft 303, and the pulley 302 is sleeved on the bearing 304.

[0054] For further reference, Figure 7 As shown, the pulley 302 is hollow, the movable end of the bearing 304 is connected to the pulley 302, and the fixed end of the bearing 304 is connected to the fixed shaft 303. Specifically, the fixed shaft 303 can be fixed by a limit pin, and the fixed shaft 303 is used as a support for the bearing 304 to ensure stable rotation of the pulley 302.

[0055] Embodiment 5:

[0056] Based on the above embodiments, reference Figure 8 As shown, one embodiment of the present invention is that a buffer pad 10 is provided at the bottom of the frame 1, a fixing hole 11 is provided in the buffer pad 10, a limiting frame 12 is provided on the frame 1, a screw hole corresponding to the fixing hole 11 is provided in the limiting frame 12, and the buffer pad 10 is used to contact the ground. The buffer pad 10 is installed at the bottom of the frame 1 through the fixing hole 11 and the limiting frame 12. The buffer pad 10 reduces the impact of the test process on the ground, which is beneficial to protecting the ground.

[0057] Embodiment 5:

[0058] Based on the above embodiment, another embodiment of the present invention is that the lower hanging plate 9 is fixed on the frame 1, and the upper hanging plate 8 is also fixed on the frame 1, and the upper hanging plate 8 is placed above the lower hanging plate 9; it is used to hang the electric hoist from the upper hanging plate 8, because the function of the lower hanging plate 9 is to fix the end of the steel rope 4 and connect the electric hoist, specifically, the upper hanging plate 8 hangs the electric hoist, and the chain end of the electric hoist is provided with a lower hook, and the lower hook is connected to the lower hanging plate 9, so that when the electric hoist is working, it can apply tension to the lower hanging plate 9 and the steel rope 4.

[0059] After the anti-fall test is completed, the chain is released by the electric hoist to relax the steel rope 4 and put it on the relevant working unit; then the electric hoist pulls the lower hanging plate 9 upward, at which time the steel rope 4 gradually moves upward and tightens, and then the guide rail 502 is reset to the initial position; if necessary, the head end of the steel rope 4 can be temporarily fixed on the upper hanging plate 8, so as to remove the electric hoist and replace / repair the electric hoist.

[0060] refer to Figures 1 to 8 As shown, during the use of the anti-falling test device in the above preferred embodiment of the present invention, the counterweight 2 is the basic counterweight 2, that is, the deadweight of the counterweight box itself; after the device is assembled, the release handle 603 is pushed upward, and the limit portion 605 of the release handle 603 contacts the limit block 604 of the swing rod 602, so that the tensioning mechanism 6 fixes the pulley assembly 7, and the electric hoist is suspended on the upper hanging plate 8, the head end of the steel rope 4 is connected to the guide rail column 501 at the front end of the guide rail 502, and the end of the steel rope 4 is mounted on the lower hanging plate 9, and the lower hanging plate 9 is connected to the lower hook of the electric hoist; start the electric hoist, reset the guide rail 502 to the initial position through the steel rope 4, and then mount the counterweight on the guide rail column 501, and under the dual action of the electric hoist and the counterweight itself, the steel rope 4 is tightened, and at this time, the two ends of the steel rope 4 are evenly stressed, the counterweight 2 is stationary, and the guide rail 502 is also stationary in the guide seat 503. At this time, according to the test parameters, the counterweight 2 is increased to the weight required for the test. Then, the release handle 603 is toggled downward, and the release handle 603 presses the support seat 701 through the swing rod 602 to unlock the support seat 701. Under the action of the counterweight 2, the pulley assembly 7 is pulled upward as a whole by the steel rope, and the steel rope becomes loose. At this time, the counterweight 2 pulls the moving guide rail column 501 to fall. Through the cooperation between the guide rail 502 installed on the guide rail column 501 and the guide seat 503, the anti-falling blocking arm of the guide seat 503 rotates downward and immediately gets stuck with the anti-falling cross bar in the guide rail 502, thereby preventing the guide rail column 501 from continuing to fall, thereby completing the anti-falling performance test. According to the needs of the user, the test device can be loaded with different counterweights 2. After each test is completed, the guide rail 502 and the guide rail column 501 are reset to the initial position in the above-mentioned manner; by continuously increasing the counterweight 2, the anti-falling performance of the anti-falling device is tested.

[0061] The "one embodiment", "another embodiment", "embodiment", "preferred embodiment" and the like mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when a specific feature, structure or characteristic is described in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0062] Although the present invention is described herein with reference to a number of illustrative embodiments of the present invention, it will be appreciated that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, drawings, and claims, a variety of variations and modifications may be made to the components and / or layout of the subject combination layout. In addition to the variations and modifications made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A fall prevention test device, comprising a frame (1), a scaffolding guide rail assembly (5) and a counterweight (2), characterized in that: The upper end of the frame (1) is provided with a balancing mechanism (3), a steel rope (4) is sleeved on the balancing mechanism (3), the scaffolding guide rail assembly (5) is installed on the front side of the frame (1), the counterweight (2) is fixed on the scaffolding guide rail assembly (5), and the head end of the steel rope (4) is connected to the scaffolding guide rail assembly (5); The frame (1) is provided with a tensioning mechanism (6) at the bottom, and a pulley assembly (7) is provided on the tensioning mechanism (6). The end of the steel rope (4) is connected to a lower hanging plate (9) and is sleeved on the pulley assembly (7). The lower hanging plate (9) is externally connected to an electric hoist. The pulley assembly (7) pulls the scaffolding guide rail assembly (5) through the steel rope (4), and the tensioning mechanism (6) locks the pulley assembly (7), so that the scaffolding guide rail assembly (5) moves up and down with the pulling of the steel rope (4). When the tensioning mechanism (6) unlocks the pulley assembly (7), the scaffolding guide rail assembly (5) falls down. The tensioning mechanism (6) comprises a fixed bracket (601), the fixed bracket (601) being mounted on the frame (1), the pulley assembly (7) comprising a support seat (701), a movable pulley being mounted on the support seat (701), and the support seat (701) being movably mounted on the frame (1), a swing rod (602) being provided on the fixed bracket (601) for pressing down the support seat (701), and a release handle (603) being provided on one side of the swing rod (602), and the release handle (603) abuts against and locks the swing rod (602); The lower hanging plate (9) is fixed on the frame (1), and an upper hanging plate (8) is also fixed on the frame (1), the upper hanging plate (8) is placed above the lower hanging plate (9), and the electric hoist is suspended by the upper hanging plate (8); The scaffolding guide rail assembly (5) comprises a guide rail column (501), the counterweight (2) is fixed on the front side of the guide rail column (501), the head end of the steel rope (4) is connected to the upper end of the guide rail column (501), the rear side of the guide rail column (501) is provided with a guide rail (502), the frame body (1) is provided with at least one guide seat (503), the guide rail (502) is placed in the track slide groove of the guide seat (503), and the guide rail (502) is also matched with the anti-fall arm in the guide seat (503).

2. The anti-fall test device according to claim 1, characterized in that: A counterweight hanger (504) is provided on the front side of the guide rail column (501), the end of the counterweight hanger (504) is fixed on the guide rail column (501), a counterweight hanger seat (505) is provided at the front end of the counterweight hanger (504), and the counterweight (2) is suspended at the lower end of the counterweight hanger seat (505).

3. The anti-fall test device according to claim 1, characterized in that: A limiting block (604) is provided at the end of the swing rod (602), and a limiting portion (605) corresponding to the limiting block (604) is provided at the front end of the release handle (603), and the limiting portion (605) abuts against the limiting block (604).

4. The anti-fall test device according to claim 1, characterized in that: The release handle (603) is provided with a handle fixing seat (606), and the handle fixing seat (606) is installed on the frame (1), with the handle fixing seat (606) serving as a support point for the release handle (603).

5. The anti-fall test device according to claim 1, characterized in that: The balancing mechanism (3) comprises a housing (301) and a pulley (302); the housing (301) is fixed on the frame (1); the pulley (302) is located in the housing (301); a fixed shaft (303) is provided in the housing (301); a bearing (304) is provided on the fixed shaft (303); and the pulley (302) is sleeved on the bearing (304).

6. The anti-fall test device according to claim 5, characterized in that: The pulley (302) is hollow, the movable end of the bearing (304) is connected to the pulley (302), and the fixed end of the bearing (304) is connected to the fixed shaft (303).

7. The anti-fall test device according to claim 1, characterized in that: A buffer pad (10) is provided at the bottom of the frame (1), a fixing hole (11) is provided in the buffer pad (10), a limiting frame (12) is provided on the frame (1), a screw hole corresponding to the fixing hole (11) is provided in the limiting frame (12), and the buffer pad (10) contacts the ground.

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