CN211877364U - Anti-falling test device - Google Patents

Abstract

The utility model discloses an anti-falling test device, which comprises a frame body, a scaffold guide rail assembly and a counterweight, wherein the upper end of the frame body is provided with a balance mechanism, a steel cable is sleeved on the balance mechanism, the scaffold guide rail assembly is arranged at the front side of the frame body, the counterweight is fixed on the scaffold anti-falling assembly, and the head end of the steel cable is connected with the scaffold anti-falling assembly; above-mentioned support body lower part is equipped with straining device, above-mentioned straining device is last to be equipped with and to move loose pulley assembly, link plate under the above-mentioned steel cable end-to-end connection, and the cover is established on moving loose pulley assembly, be used for drawing the counter weight through the steel cable by moving loose pulley assembly, and move loose pulley assembly by straining device locking, make the counter weight static, when straining device unlocks and moves loose pulley assembly, make the counter weight tenesmus to expect to solve the safety hook at the actual research and development in-process, can't effectually test the problem with confirming its working property to the safety hook.

Description

Anti-falling test device

Technical Field

The utility model relates to an anti-falling device is experimental, concretely relates to anti-falling test device.

Background

The lifting scaffold is a scaffold installed on an outer wall of a building, and the acting points of scaffold bodies are all on the building structure, so that the scaffold is not required to be completely built from bottom to top, and the scaffold is more suitable for being used in high-rise building construction. The anti-falling structure commonly used at present is matched with an anti-falling crosspiece on a guide rail through an anti-falling shifting fork wheel, when falling, a ratchet wheel and a pawl which are coaxially arranged with the anti-falling wheel form a block, so that the anti-falling shifting fork wheel can not continue to rotate and form a block with the anti-falling crosspiece on the guide rail, and further the support body can be prevented from continuing to fall. The applicant of the present patent has therefore started to study new fall arrest devices for scaffolding replacing the aforementioned structures, and in the course of the study of such fall arrest devices it is necessary to simultaneously study and improve on the test equipment of the fall arrest structure, due to the safety of the fall arrest device in relation to the use of the lifting scaffolding.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent weighing down test device to hope to solve the safety hook at the actual research and development in-process, can't effectually test the problem in order to confirm its working property to the safety hook.

In order to solve the technical problem, the utility model adopts the following technical scheme:

an anti-falling test device comprises a frame body, a scaffold guide rail assembly and a balance weight, wherein a balance mechanism is arranged at the upper end of the frame body, a steel rope is sleeved on the balance mechanism, the scaffold guide rail assembly is arranged on the front side of the frame body, the balance weight is fixed on the scaffold guide rail assembly, and the head end of the steel rope is connected with the scaffold guide rail assembly; above-mentioned support body lower part is equipped with straining device, the last loose pulley assembly that is equipped with of above-mentioned straining device, link plate under the above-mentioned steel cable end-to-end connection, and the cover is established on loose pulley assembly for link plate external electric block down, be used for drawing through the steel cable by loose pulley assembly and draw scaffold guide rail assembly, and by straining device locking loose pulley assembly, make scaffold guide rail assembly draw and move from top to bottom along with the steel cable draws, when straining device unblock loose pulley assembly, make scaffold guide rail assembly tenesmus.

Preferably, the scaffold guide rail assembly comprises a guide rail upright post, the counterweight is fixed on the front side of the guide rail upright post, the head end of the steel rope is connected with the upper end of the guide rail upright post, the rear side of the guide rail upright post is provided with a guide rail, the frame body is provided with at least one guide seat, the guide rail is arranged in a rail chute of the guide seat, and the guide rail is matched with the anti-falling arm in the guide seat.

The technical scheme is that a counterweight hanging frame is arranged on the front side of the guide rail upright post, the tail end of the counterweight hanging frame is fixed on the guide rail upright post, a counterweight hanging seat is arranged at the front end of the counterweight hanging frame, and the counterweight is hung at the lower end of the counterweight hanging seat.

Preferably, the tensioning mechanism comprises a fixed support, the fixed support is mounted on the frame body, the pulley assembly comprises a supporting seat, a movable pulley is mounted on the supporting seat, the supporting seat is movably mounted on the frame body, a swing rod used for pressing the supporting seat downwards is arranged on the fixed support, and a release handle is arranged on one side of the swing rod and used for being abutted to and locking the swing rod through the release handle.

The further technical scheme is that a limiting block is arranged at the tail end of the swing rod, and a limiting part corresponding to the limiting block is arranged at the front end of the release handle and used for being abutted against the limiting block by the limiting part.

A further technical scheme is that the release handle is provided with a handle fixing seat, and the handle fixing seat is installed on the frame body and used as a supporting point of the release handle.

Preferably, the balancing mechanism includes a housing and a pulley, the housing is fixed on the frame, the pulley is located in the housing, a fixed shaft is arranged in the housing, a bearing is arranged on the fixed shaft, and the pulley is sleeved on the bearing.

The pulley is hollow, the movable end of the bearing is connected with the pulley, and the fixed end of the bearing is connected with the fixed shaft.

Preferably, the bottom of the frame body is provided with a buffer pad, the buffer pad is provided with a fixing hole therein, the frame body is provided with a limiting frame, and the limiting frame is provided with a screw hole corresponding to the fixing hole therein for contacting the buffer pad with the ground.

Preferably, the lower hanging plate is fixed on the frame body, an upper hanging plate is further fixed on the frame body, and the upper hanging plate is arranged above the lower hanging plate and used for hanging the electric hoist by the upper hanging plate.

Compared with the prior art, the beneficial effects of the utility model are one of following at least:

the utility model discloses a support body is as the support element, and the counter weight hangs on scaffold guide rail set spare to bear through adjustment counter weight to scaffold guide rail set spare and test, through steel cable and balance mechanism, the loose pulley assembly of being convenient for draws the counter weight, hang the steel cable end through link plate down, make the counter weight be in quiescent condition, through straining device locking or release loose pulley set spare, thereby the tensioning/loosen the steel cable, make the counter weight tenesmus, thereby act on scaffold guide rail set spare with the pressure of counter weight, in order to test.

The utility model supports the counterweight through the guide rail upright post, and limits the moving path of the guide rail upright post through the guide rail and the guide seat, thereby controlling the stress direction; the guide rail upright post is driven to fall down through the balance weight, and the falling prevention is realized through the guide rail and the guide seat.

The utility model discloses a counter weight gallows makes and leaves safe distance between counter weight and the guide rail stand to prevent that the guide rail stand from moving in-process collision counter weight, hanging the counter weight through the counter weight hanging seat, guarantee that the counter weight receives to apply the pulling force direction to the guide rail stand and be vertical downwards, thereby be of value to experimental stability and accuracy.

The utility model has the advantages that the swing rod is pressed downwards by releasing the handle, and the supporting seat is driven downwards by the swing rod, so that the pulley component presses the steel rope downwards, the steel rope is ensured to be in a stretched state, and the safety and the stability of the test are benefited; the limiting block and the limiting part are mutually abutted, so that the locking/releasing is easy; this through release handle be convenient for the user and exert pulling force, utilize the handle fixing base as the fulcrum, the user drives stopper and spacing portion through lever principle and contradicts or separates to can reduce the user and lock/release required power.

The utility model discloses a fixed orifices and spacing are installed the blotter in the support body bottom, reduce the impact of test process to ground through the blotter, are favorable to protecting ground.

Drawings

Fig. 1 is a schematic view of the structure distribution of the present invention.

Fig. 2 is a schematic illustration of the installation of the scaffolding rail assembly of fig. 1.

Fig. 3 is a schematic view of the counterweight suspending seat of fig. 2.

Fig. 4 is a schematic structural distribution diagram of the tensioning mechanism of fig. 1.

Fig. 5 is a schematic structural view of the tensioning mechanism of fig. 1.

Fig. 6 is a schematic view of the operation of the balancing mechanism of fig. 1.

Fig. 7 is a schematic view of the pulley installation of fig. 6.

Fig. 8 is a schematic view of the installation of the cushion pad of the present invention.

Description of reference numerals:

1-frame body, 2-counterweight, 3-balance mechanism, 4-steel rope, 5-scaffold guide rail component, 6-tensioning mechanism, 7-pulley component, 8-upper hanging plate, 9-lower hanging plate, 10-buffer pad, 11-fixing hole, 12-limiting frame, 301-shell, 302-pulley, 303-fixing shaft, 304-bearing, 501-guide rail upright post, 502-guide rail, 503-guide seat, 504-counterweight hanger, 505-counterweight hanger seat, 601-fixing support, 602-swing rod, 603-release handle, 604-limiting block, 605-limiting part, 606-handle fixing seat and 701-supporting seat.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1:

referring to fig. 1 and 2, an embodiment of the present invention is an anti-falling test device, including a frame body 1 and a counterweight 2, wherein the frame body 1 is a steel frame made of existing steel, and a stressed portion of the frame body 1 adopts a triangular structure to improve stability of the frame body 1 itself; wherein counter weight 2 is current weight box to can add/reduce cement, iron plate and other weight increase objects according to the demand in the test process, thereby the load of selective control counter weight 2 in the test.

1 upper end of above-mentioned support body is equipped with balance mechanism 3, steel cable 4 is established to the cover on above-mentioned balance mechanism 3, form two interact's atress parts at balance mechanism 3 at both ends through steel cable 4, 1 front side of above-mentioned support body is equipped with scaffold guide rail assembly 5, above-mentioned counter weight 2 is fixed on scaffold guide rail assembly 5, exert a power of weighing down to scaffold guide rail assembly 5 through counter weight 2, thereby drive scaffold guide rail assembly 5 tenesmus, and then provide test environment for scaffold guide rail assembly 5 prevents weighing down the performance at the tenesmus emergence in-process.

The head end of the steel rope 4 is connected with a scaffold guide rail component 5; the counterweight 2 is connected with the steel rope 4 through the scaffold guide rail assembly 5, so that when the counterweight 2 is suspended, the steel rope 4 is used for pulling, a pulling force is applied to the scaffold guide rail assembly 5, the counterweight 2 is in a suspended state, and the scaffold guide rail assembly 5 is prevented from falling due to the influence of the counterweight 2; more specifically, the tension of the steel cable 4 and the gravity of the counterweight 2 form a combined external force and act on the scaffold guide rail assembly 5, so that the counterweight 2 and the scaffold guide rail assembly 5 are in a static state.

The force application direction of the tail end of the steel rope 4 is opposite to gravity, the force application direction of the head end of the steel rope 4 is vertical and upward, the lower part of the frame body 1 is provided with a tensioning mechanism 6, the tensioning mechanism 6 is provided with a pulley assembly 7, the pulley assembly 7 is provided with a movable pulley, the steel rope 4 is sleeved on the movable pulley of the pulley assembly 7, and the force application direction of the head end of the steel rope 4 is changed by the movable pulley so as to be vertical and downward; hang board 9 under 4 end-to-end connection of above-mentioned steel cable, and the cover is established on loose pulley assembly 7, be used for hanging down the external electric block of board 9, wherein hang board 9 under the connection of electric block's lower couple, wherein electric block's fixing is on support body 1, be used for drawing scaffold guide rail assembly 5 through steel cable 4 by loose pulley assembly 7, and by straining device 6 locking loose pulley assembly 7, make scaffold guide rail assembly 5 draw and move from top to bottom along with steel cable 4 draws, when straining device 6 unblock loose pulley assembly 7, make scaffold guide rail assembly 5 tenesmus.

Specifically, the head end of a steel rope 4 is connected with a scaffold guide rail assembly 5, the steel rope 4 is fixed on a lower hanging plate 9 through a pulley assembly 7, the steel rope 4 is sleeved on the pulley assembly 7, on one hand, the stress direction of the steel rope 4 is changed through adjustment of the pulley assembly 7, and when the steel rope 4 is tightened, the lower hanging plate 9 bears the tension of the tail end of the loaded steel rope 4; when the tensioning mechanism 6 locks the pulley assembly 7, the steel rope 4 is in a tensioned state on the pulley assembly 7, force can be accurately transmitted, the pulley assembly 7 does not move at the moment, and the pulley assembly 7 plays a role of a fixed pulley. Under the action of the pulley assembly 7, the tension and the pressure received by the scaffold guide rail assembly 5 are the same; namely, the scaffold guide rail assembly 5 is in a non-dropping state, the counterweight 2 is in a static state, and the pulling force borne by the lower hanging plate 9 is in direct proportion to the gravity borne by the counterweight 2.

Wherein, the electric hoist applies upward pulling force to the lower hanging plate 9, so that the scaffold guide rail component 5 and the steel rope 4 are easy to tighten; its straining device 6 is when unblock loose pulley assembly 7, and steel cable 4 is in the state of laxing on loose pulley assembly 7, and the unable effectual effect in scaffold rail set spare 5 of pulling force that steel cable 4 produced, scaffold rail set spare 5 received 2 tenesmus influences this moment, and scaffold rail set spare 5 can simulate the tenesmus state, and scaffold rail set spare 5 begins the auto-lock at the tenesmus in-process, thereby tests and detects anti-falling mechanism according to the auto-lock condition.

Example 2:

based on the above embodiment, referring to fig. 2 and 3, another embodiment of the present invention is that the scaffold rail assembly 5 includes a rail column 501, the counterweight 2 is fixed on the front side of the rail column 501, the head end of the steel cable 4 is connected to the upper end of the rail column 501, the rear side of the rail column 501 is provided with a rail 502, the frame 1 is provided with at least one guiding seat 503, and the anti-falling arm of the guiding seat 503 is engaged with the rail 502.

The guide seat 503 is an existing guide seat, a slide groove adapted to the anti-falling arm is arranged on the guide rail 502 of the existing guide seat, the anti-falling arm is clamped into the slide groove, and an anti-falling transverse stop rod is arranged in the slide groove; the anti-falling stop arm and the triggering swing arm are arranged inside the seat body of the guide seat, when the frame body falls, the anti-falling transverse stop rod moves downwards quickly, and under the moving action of the anti-falling transverse stop rod, the triggering swing arm matched with the anti-falling stop arm drives the anti-falling stop arm to swing downwards, and after the anti-falling stop arm rotates downwards, the anti-falling transverse stop rod cannot reset and is immediately clamped with the next anti-falling transverse stop rod, so that the frame body is prevented from continuously falling.

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

Further, in order to ensure that the combined external force is vertically downward, the center of gravity of the counterweight 2 coincides with the central axis of the counterweight 2, and the deflection of the combined external force direction is avoided, a counterweight hanging bracket 504 is arranged on the front side of the guide rail upright column 501, wherein the counterweight hanging bracket 504 is triangular and can be an existing triangular bracket, the tail end of the counterweight hanging bracket 504 is fixed on the guide rail upright column 501, and the fixing mode can be welding or bolt connection; because counter weight 2 has certain volume, set up sufficient safe distance between counter weight 2 and guide rail stand 501, can avoid counter weight 2 to contact guide rail stand 501.

The counterweight hanging seat 505 is arranged at the front end of the counterweight hanging bracket 504, the counterweight 2 is hung at the lower end of the counterweight hanging seat 505, the counterweight 2 is fixed at the front end of the counterweight hanging bracket 504 through the counterweight hanging seat 505, so that the center of gravity of the counterweight 2 is coincident with the central axis of the counterweight 2, and the extension of the counterweight hanging bracket 504 is combined, so that the safety distance between the counterweight 2 and the guide rail upright column 501 is ensured, the counterweight 2 is effectively prevented from being subjected to external force deviation in the lifting process, and the counterweight 2 and the guide rail upright column 501 can stably work.

Example 3:

based on the above embodiment, referring to fig. 4 and 5, another embodiment of the present invention is that the tensioning mechanism 6 includes a fixing bracket 601, the fixing bracket 601 is mounted on the frame body 1, and the fixing bracket 601 may be mounted by bolting or welding; the pulley assembly 7 includes a support seat 701, and a movable pulley is mounted on the support seat 701, that is, the support seat 701 is wrapped on both sides of the movable pulley of the pulley assembly 7, so that the support seat 701 does not block/obstruct the moving path of the steel wire 4.

A swing rod 602 for pressing the support seat 701 downwards is arranged on the fixed bracket 601, and a release handle 603 for abutting against and locking the swing rod 602 by the release handle 603 is arranged on one side of the swing rod 602; when the releasing handle 603 abuts and locks the swing rod 602, the supporting seat 701 enables the movable pulley on the pulley assembly 7 to realize the function of a fixed pulley, so as to ensure that the counterweight 2 does not drive the guide rail to drop.

The head end of the swing rod 602 is mounted on the fixed bracket 601 through a movable bolt, so that the swing rod 602 can swing up and down, the lower part of the supporting seat 701 is provided with a strip-shaped through hole, the swing rod 602 penetrates through the strip-shaped through hole, the tail end of the swing rod 602 contacts with the release handle 603, and the swing rod 602 is abutted and locked through the release handle 603.

Further, referring to fig. 5, in order to release the handle 603 and lock the swing rod 602 relatively stably, the end of the swing rod 602 is provided with a limit block 604, and the front end of the release handle 603 is provided with a limit part 605 corresponding to the limit block 604, so that the limit part 605 abuts against the limit block 604; during operation, the movable pulley of the pulley assembly 7 contacts the steel rope 4, the limiting part 605 of the release handle 603 is clamped into the swing rod 602, the limiting screw of the limiting part 605 abuts against the upper end of the limiting block 604, and at the moment, the lower end of the swing rod 602 abuts against the bottom of the strip-shaped through hole of the supporting seat 701, so that the supporting seat 701 is driven, the pulley assembly 7 is in a fixed state, and the steel rope 4 is tightened.

When the limiting part 605 of the releasing handle 603 leaves the limiting block 604, the steel rope 4 is in a loose state, the pulley assembly 7 is influenced by the steel rope 4, the pulley assembly 7 moves upwards, the supporting seat 701 drives the swing rod 602 to lift, wherein the lower end of the limiting block 604 is provided with a hook which hooks the supporting seat 701, on one hand, the supporting seat 701 is prevented from falling off, and on the other hand, the steel rope 4 is tensioned after being loosened, so that the counterweight 2 is prevented from falling to the ground.

Furthermore, a handle fixing seat 606 is disposed on the releasing handle 603, and the handle fixing seat 606 is mounted on the frame body 1 and used as a supporting point for releasing the handle 603 by the handle fixing seat 606, so that an operator can detach the limiting part 605 from the limiting block 604.

Example 4:

based on the above embodiment, referring to fig. 6, an embodiment of the present invention is that, the balancing mechanism 3 includes a housing 301 and two pulleys 302, wherein the two pulleys 302 can extend the distance between the steel cable 4 and the frame 1, and on the other hand, the symmetry of the double-reaction force is ensured, the housing 301 is fixed on the frame 1, the pulleys 302 are located in the housing 301, the housing 301 is provided with a fixing shaft 303, the fixing shaft 303 is provided with a bearing 304, and the pulleys 302 are sleeved on the bearing 304.

Further, referring to fig. 7, the pulley 302 is hollow, the movable end of the bearing 304 is connected to the pulley 302, the fixed end of the bearing 304 is connected to the fixed shaft 303, and specifically, the fixed shaft 303 can be fixed by a limit pin, and the fixed shaft 303 serves as a support for the bearing 304 to ensure that the pulley 302 rotates stably.

Example 5:

based on above-mentioned embodiment, refer to fig. 8 and show, an embodiment of the utility model is that, above-mentioned support body 1 bottom is equipped with blotter 10, is equipped with fixed orifices 11 in the above-mentioned blotter 10, is equipped with spacing 12 on the above-mentioned support body 1, is equipped with the screw that corresponds with fixed orifices 11 in the above-mentioned spacing 12 for by blotter 10 contact ground, install blotter 10 in support body 1 bottom through fixed orifices 11 and spacing 12, reduce the impact of test process to ground through blotter 10, be favorable to protecting ground.

Example 5:

based on the above embodiment, another embodiment of the present invention is that the lower hanging plate 9 is fixed on the frame body 1, and the upper hanging plate 8 is further fixed on the frame body 1, and the upper hanging plate 8 is disposed above the lower hanging plate 9; the electric hoist is used for hanging the electric hoist by the upper hanging plate 8, the lower hanging plate 9 is used for fixing the tail end of the steel rope 4 and connecting the electric hoist, in particular, the electric hoist is hung by the upper hanging plate 8, the end part of the chain of the electric hoist is provided with the lower hook, the lower hook is connected with the lower hanging plate 9, therefore, when the electric hoist works, the electric hoist can apply tension to the lower hanging plate 9 and the steel rope 4,

after the anti-falling test is finished, the electric hoist is used for releasing the chain, so that the steel rope 4 is loosened and sleeved on the relevant working unit; then the electric hoist pulls the lower hanging plate 9 to move upwards, the steel rope 4 gradually moves upwards and is tightened, 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 that the electric hoist can be taken down, and the electric hoist can be replaced/overhauled.

Referring to fig. 1 to 8, in the above preferred embodiment of the anti-falling test device of the present invention, during use, the counterweight 2 is a basic counterweight 2, i.e. the counterweight box has its own weight; after the device is assembled, the releasing handle 603 is shifted upwards, the limiting part 605 of the releasing handle 603 abuts against the limiting block 604 of the swing rod 602, the pulley assembly 7 is fixed by the tensioning mechanism 6, the electric hoist is hung on the upper hanging plate 8, the head end of the steel rope 4 is connected with the guide rail upright column 501 at the front end of the guide rail 502, the tail end of the steel rope 4 is hung on the lower hanging plate 9, and the lower hanging plate 9 is connected with a lower hook of the electric hoist; starting electric block, restoring guide rail 502 to initial position through steel cable 4, then carry the counter weight on guide rail stand 501, under the dual function through electric block and counter weight itself, tighten steel cable 4, at this moment at the even atress in the both ends of steel cable 4, counter weight 2 is static, and guide rail 502 also is in static in guide holder 503, at this moment, according to experimental parameter, increase counter weight 2 to experimental required weight. Then the releasing handle 603 is shifted downwards, the releasing handle 603 presses the supporting seat 701 downwards through the swing rod 602 to unlock the supporting seat 701, the pulley assembly 7 is pulled by the steel rope to move upwards integrally under the action of the counterweight 2, the steel rope is loosened, the counterweight 2 pulls the guide rail upright column 501 to fall at the moment, and through the matching of the guide rail 502 arranged on the guide rail upright column 501 and the guide seat 503, the falling prevention arm of the guide seat 503 rotates downwards and is immediately clamped with the falling prevention transverse blocking rod in the guide rail 502, so that the guide rail upright column 501 is prevented from continuously falling, and the test of the falling prevention performance is completed. The test apparatus can be loaded with different weights 2 according to the user's requirements. After each test is finished, the guide rail 502 and the guide rail upright 501 are reset to the initial position in the manner described above; the anti-falling performance of the anti-falling device is tested by continuously increasing the counterweight 2.

Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims (10)

1. The utility model provides an anti-falling test device, includes support body (1), scaffold guide rail set spare (5) and counter weight (2), its characterized in that: the upper end of the frame body (1) is provided with a balance mechanism (3), a steel rope (4) is sleeved on the balance mechanism (3), the scaffold guide rail assembly (5) is installed on the front side of the frame body (1), the balance weight (2) is fixed on the scaffold guide rail assembly (5), and the head end of the steel rope (4) is connected with the scaffold guide rail assembly (5);

support body (1) lower part is equipped with straining device (6), be equipped with loose pulley assembly (7) on straining device (6), link plate (9) under steel cable (4) end-to-end connection, and the cover is established on loose pulley assembly (7), be used for link plate (9) external electric block down, be used for drawing scaffold guide rail assembly (5) through steel cable (4) by loose pulley assembly (7), and by straining device (6) locking loose pulley assembly (7), make scaffold guide rail assembly (5) draw and move from top to bottom along with steel cable (4), when straining device (6) unblock loose pulley assembly (7), make scaffold guide rail assembly (5) tenesmus.

2. The fall arrest testing device according to claim 1, wherein: scaffold puts up guide rail set spare (5) including guide rail stand (501), counter weight (2) are fixed in guide rail stand (501) front side, guide rail stand (501) upper end is connected to steel cable (4) head end, guide rail stand (501) rear side is equipped with guide rail (502), be equipped with at least one guide holder (503) on support body (1), guide rail (502) are arranged in the track spout of guide holder (503), just guide rail (502) still cooperate with the arm that prevents weighing down in guide holder (503).

3. The fall arrest testing device according to claim 2, wherein: the guide rail upright post (501) front side is equipped with counter weight gallows (504), counter weight gallows (504) end is fixed on guide rail upright post (501), counter weight gallows (504) front end is equipped with counter weight and hangs seat (505), counter weight (2) hang in counter weight and hang seat (505) lower extreme.

4. The fall arrest testing device according to claim 1, wherein: straining device (6) include fixed bolster (601) install on support body (1), loose pulley assembly (7) are including supporting seat (701), install the movable pulley on supporting seat (701), just supporting seat (701) movable mounting is on support body (1), be equipped with pendulum rod (602) that are used for pushing down supporting seat (701) on fixed bolster (601), pendulum rod (602) one side is equipped with release handle (603) for contradict and lock pendulum rod (602) by release handle (603).

5. The fall arrest testing device according to claim 4, wherein: the tail end of the swing rod (602) is provided with a limiting block (604), and the front end of the release handle (603) is provided with a limiting part (605) corresponding to the limiting block (604) and used for being abutted against the limiting block (604) by the limiting part (605).

6. The fall arrest testing device according to claim 4 or 5, wherein: the release handle (603) is provided with a handle fixing seat (606), and the handle fixing seat (606) is installed on the frame body (1) and used as a supporting point of the release handle (603) by the handle fixing seat (606).

7. The fall arrest testing device according to claim 1 or 4, wherein: balance mechanism (3) are including casing (301), pulley (302), casing (301) are fixed on support body (1), pulley (302) are arranged in casing (301), be equipped with fixed axle (303) in casing (301), be equipped with bearing (304) on fixed axle (303), pulley (302) cover is established on bearing (304).

8. The fall arrest testing device according to claim 7, wherein: the pulley (302) is hollow, the movable end of the bearing (304) is connected with the pulley (302), and the fixed end of the bearing (304) is connected with the fixed shaft (303).

9. The fall arrest testing device according to claim 1, wherein: the utility model discloses a support body, including support body (1), support body (1) bottom is equipped with blotter (10), be equipped with fixed orifices (11) in blotter (10), be equipped with spacing (12) on support body (1), be equipped with the screw that corresponds with fixed orifices (11) in spacing (12) for contact ground by blotter (10).

10. The fall arrest testing device according to claim 1, wherein: the lower hanging plate (9) is fixed on the frame body (1), an upper hanging plate (8) is further fixed on the frame body (1), and the upper hanging plate (8) is arranged above the lower hanging plate (9) and used for hanging the electric hoist through the upper hanging plate (8).

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