Fireproof package drop resistance testing machine

Abstract

The utility model provides a fireproof package drop resistance testing machine, which belongs to the technical field of fireproof package testing and comprises a mounting frame. The drop test mechanism is used for supporting and releasing the support of the sample, and when the drop test mechanism lifts the sample to a set height, the support of the sample is released, so that the sample does free falling motion to simulate test falling; the lifting mechanism is connected with the drop test mechanism and is used for driving the drop test mechanism to ascend and descend, so that the drop test mechanism ascends and descends along the extension direction of the mounting rack; a measuring tape box for fixing a measuring tape is arranged at the lower end of the mounting frame, a measuring tape fixing plate is arranged on the drop test mechanism and used for fixing the initial end of the measuring tape, and after the drop test mechanism ascends, the measuring tape in the measuring tape box is pulled to stretch out, so that the ascending height of the drop test mechanism can be measured. The measuring tape is adopted to measure the lifting height of the sample, the stretching length of the measuring tape is the lifting height of the sample, and data can be conveniently obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof bag testing, in particular to a fireproof bag anti-drop testing machine. Background Art

[0002] Fire blocking materials are fire and smoke-proof materials used to seal or fill through holes, annular gaps and building gaps in buildings, structures and various facilities. They are easy to replace and meet performance requirements. According to the composition and shape characteristics of the products, they can be divided into fire blocking bags, fire sealing glue, fire blocking panels, etc. Fire blocking bags are bag-shaped objects made by packaging fire blocking materials. They are suitable for fire blocking of larger holes or fire separation of cable trays. Fire blocking bags are also called fire-resistant bags or fireproof bags. According to the standard GB 23864-2009, fire blocking bags need to be tested for their drop resistance. The test method is to let three complete fire blocking bags fall freely from a height of 5m onto a concrete horizontal ground and observe the bag body.

[0003] The disadvantages of existing testing machines are: since each test requires a free fall from a height of 5m to a horizontal ground, the drop test needs to be carried out frequently, and manual handling or taking an elevator is troublesome and dangerous, posing a high safety hazard. For example, the utility model patent with the authorization announcement number CN217765450U discloses a drop test fixture with an adjustable drop position. This solution accurately adjusts the drop position of the sample by setting a scale on the test frame. However, this solution requires manual handling of the sample, which is laborious for heavier samples; its material clamping components use more pneumatic components, and the manufacturing cost of the tooling is relatively high.

[0004] In response to the above-mentioned problems, the utility model patent with authorization announcement number CN216669205U discloses a drop tester suitable for packaging boxes of various sizes. This solution sets up a lifting drive device to lift the sample to be tested to the test height for drop test, eliminating the need for manual handling of the sample and saving manpower. However, the lifting drive device generally controls its lifting height through an external controller, and the lifting drive device may have accuracy deviations after being used for a period of time. Since the lifting height of the fire-retardant bag sample during the test is relatively high, reaching 5 meters, it is difficult to judge whether the sample has been lifted into place or whether there is an error. It cannot be directly detected by the naked eye and cannot be calibrated in time, which may cause errors in the test data. Utility Model Content

[0005] The utility model provides a fireproof bag anti-drop testing machine to solve the technical problem in the prior art that it is difficult to determine whether the lifting height of a sample has a deviation.

[0006] In order to solve the above problems, the fireproof bag anti-drop test machine provided by the utility model adopts the following technical solutions: a mounting frame;

[0007] The drop test mechanism is used to support and release the support of the sample. When the drop test mechanism lifts the sample to a set height, it releases the support of the sample, allowing the sample to perform free fall motion to simulate a test fall;

[0008] A lifting mechanism, which is connected to the drop test mechanism and is used to drive the drop test mechanism to rise and fall, so that the drop test mechanism rises and falls along the extension direction of the mounting frame;

[0009] A tape measure box for fixing the tape measure is provided at the lower end of the mounting frame, and a tape measure fixing plate is provided on the drop test mechanism, and the tape measure fixing plate is used to fix the initial end of the tape measure. After the drop test mechanism rises, the tape measure of the tape measure box is pulled out to measure the rising height of the drop test mechanism.

[0010] As a further improvement, the drop test mechanism includes a protective frame, two flip plates are hinged at the bottom of the protective frame, and a slidable stopper is also provided at the bottom of the protective frame. The stopper has a locking position and a dropping position on its sliding stroke. The stopper in the locking position is located at the bottom of the two flip plates, forming a limit on the two flip plates to facilitate supporting the sample. The stopper in the dropping position releases the limit on the two flip plates, and the stopper avoids the two flip plates, causing the sample to fall due to gravity.

[0011] As a further improvement, a connecting frame is provided on the rear side of the protective frame, a guide rail support is provided at the bottom of the connecting frame, the stopper is slidably assembled on the guide rail support, and an adjusting cylinder for driving the stopper to slide is also installed on the connecting frame.

[0012] As a further improvement, the stopper includes a stop rod, the outer diameter of which is smaller than the interval between the two flip plates. A stop plate is provided at one end of the stop rod away from the adjusting cylinder to limit the two flip plates. The two flip plates are provided with grooves, the size of the grooves is larger than the size of the stop plate. When the stop plate moves to coincide with the grooves, the flip plate lacks limit and can flip downward, releasing the sample to fall.

[0013] As a further improvement, a locking nut installed on the gear rod is provided between the adjusting cylinder and the guide rail support, and a spring sleeved on the gear rod is provided between the locking nut and the guide rail support. The spring presses the locking nut to keep the gear rod in a locked position when not subject to external force, so as to prevent the gear rod from loosening and causing the specimen to fall.

[0014] As a further improvement, the lifting mechanism includes an electric winch arranged on a mounting frame, a fixed pulley is installed on the top of the mounting frame, the cable of the electric winch is wound around the fixed pulley and is connected to the drop test mechanism, and the drop test mechanism is driven to rise and fall by the electric winch.

[0015] As a further improvement, the lifting mechanism includes a movable pulley connected to the drop test mechanism, and one end of the cable passes around the movable pulley from top to bottom and then extends upward and is fixed to the top of the mounting frame.

[0016] As a further improvement, the drop test mechanism is further provided with running wheels that fit with the mounting frame to improve the stability of the drop test mechanism during lifting and lowering.

[0017] As a further improvement, a ground plate is provided at the bottom of the mounting frame, and a connecting steel frame is provided at the top of the mounting frame to improve the stability of the mounting frame.

[0018] As a further improvement, travel switches are installed at the upper end and the lower end of the mounting frame, and a limit trigger plate cooperating with the travel switch is provided on the drop test mechanism.

[0019] The beneficial effects of the above technical solution of the utility model are as follows:

[0020] 1. The utility model adopts an electric winch as the power source of the lifting mechanism, which has a fast lifting speed and high efficiency. Compared with the screw lifting mechanism, the electric winch lifting mechanism has relatively low assembly accuracy requirements and reduced preparation costs. In addition, the lifting mechanism adopts the principle of a movable pulley, which reduces the pulling force required for lifting the lifting ring.

[0021] 2. The operator can judge whether the lifting height of the sample is in place from below. In the prior art, although a scale (ruler) is used to judge whether the sample is lifted in place, it is difficult to judge with the naked eye for a drop test height of 3 meters or more. Therefore, the utility model uses a tape measure to measure the lifting height of the sample, fixes the tape measure box under the mounting frame, connects the initial end of the tape measure to the drop test mechanism, and the stretched length of the tape measure is the lifting height of the sample, making it easy to obtain data.

[0022] 3. The drop test mechanism of the utility model adopts a double flip plate structure, and controls the opening and closing of the two flip plates through a gear lever. It has a simple structure, low manufacturing cost, good stability and good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0024] Figure 1 It is a three-dimensional diagram of the fireproof bag anti-drop test machine of the utility model;

[0025] Figure 2 This is a right view of the fireproof bag anti-drop test machine of the utility model;

[0026] Figure 3 This is a left view of the fireproof bag anti-drop test machine of the utility model;

[0027] Figure 4 It is a top perspective view of the drop test mechanism of the fireproof bag anti-drop test machine of the utility model;

[0028] Figure 5 It is a bottom-up stereoscopic diagram of the drop test mechanism of the fireproof bag anti-drop test machine of the utility model;

[0029] Figure 6 for Figure 5 Enlarged view of part A.

[0030] Description of reference numerals:

[0031] 1. Mounting frame; 101. Bottom plate; 102. Ground plate; 103. Connecting steel frame; 104. Top plate; 2. Lifting mechanism; 201. Mounting seat; 202. Electric winch; 203. Fixed pulley; 204. Movable pulley; 3. Drop test mechanism; 301. Protective frame; 302. Connecting frame; 303. Lifting ring; 304. Travel wheel; 305. Limit trigger plate; 306. Tape measure fixing plate; 307. Flip plate; 308. Groove; 309. Shift lever; 310. Guide rail support; 311. Spring; 312. Locking nut; 313. Cylinder joint; 314. Adjusting cylinder; 315. Blocking piece; 4. Tape measure box; 5. Travel switch. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0033] In the prior art, since each test requires a free fall from a height of 5m to a horizontal ground, drop tests need to be performed frequently. Manual handling or taking an elevator is troublesome and dangerous, and there are high safety risks. The drop test mechanism uses multiple cylinders, which leads to high cost and low practicality of the drop test tooling. In addition, it is impossible to directly judge whether there is a deviation in the lifting height of the sample, resulting in possible errors in the test data. In response to the above problems, the utility model is provided with a lifting mechanism of an electric winch to drive the drop test mechanism to rise and fall, eliminating the trouble of manual handling. A tape measure box is provided at the lower end of the drop test mechanism, and the initial end of the tape measure of the tape measure box is connected to the drop test mechanism, so that the lifting height of the sample is converted into the stretched length of the tape measure, so that the operator can directly obtain the height of the test piece by standing at the bottom of the device.

[0034] After introducing the basic principle of the utility model, various non-limiting embodiments of the utility model are specifically introduced below. Any number of elements in the drawings is for illustration and not for limitation, and any naming is only for distinction and does not have any limiting meaning.

[0035] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0036] Embodiment 1 of the fireproof bag anti-drop tester provided by the utility model:

[0037] like Figure 1-Figure 6 As shown, it includes a mounting frame 1, which is a 6-meter-long H-shaped steel. The mounting frame 1 is perpendicular to the ground. The mounting frame 1 is provided with a wire trough extending in the vertical direction. The wire trough is used to place wires and control lines, so that the mounting frame 1 is beautiful and neat, and the wires will not be messy; the bottom of the mounting frame 1 is fixedly connected with a bottom plate 101, and the bottom of the bottom plate 101 is also connected with a ground plate 102 by bolts, and the ground plate 102 is fixed to the ground by threaded rods. A top plate 104 is fixedly installed on the top of the mounting frame 1. A connecting steel frame 103 is also connected to the top plate 104 and the middle position of the mounting frame 1 by bolts, and the connecting steel frame 103 is connected to the wall, etc. to improve stability. Through the ground plate 102, the connecting steel frame 103 and other components, it is ensured that the mounting frame 1 is stable and reliable to prevent the risk of tipping due to the equipment being too high.

[0038] like Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, the mounting frame 1 is also provided with a drop test mechanism 3, which is used to support and release the support of the sample. When the drop test mechanism 3 lifts the sample to a set height, the support for the sample is released, allowing the sample to perform free fall motion to simulate the sample falling.

[0039] The drop test mechanism 3 includes a protective frame 301 and a connecting frame 302 installed on the side of the protective frame 301. The protective frame 301 forms a protection to prevent the sample from falling during the ascent. Two flip plates 307 are hinged at the bottom of the protective frame 301, and the hinge axes of the flip plates 307 are arranged on the left and right sides of the protective frame 301. An adjusting cylinder 314 and a guide rail support 310 are installed at the bottom of the connecting frame 302. Since the required sliding stroke is relatively short, the adjusting cylinder 314 in this embodiment adopts an ultra-thin cylinder. A gear rod 309 is slidably assembled in the guide rail support 310. One end of the gear rod 309 is connected to the adjusting cylinder 314 through a cylinder joint 313. A baffle 315 is installed at the other end of the gear rod 309. The baffle 315 is arranged on both sides of the gear rod 309 to support and limit the two flip plates 307 respectively. When the two flip plates 307 are in the state of supporting the specimen, there is a gap between the two flip plates 307, and the width of the gap is greater than the external dimension of the stopper 309. The flip plate 307 is provided with a groove 308 that cooperates with the stopper 315, and the internal dimension of the groove 308 is greater than the dimension of the stopper 315. When the stopper 315 moves to the bottom of the groove 308, the flip plate 307 is no longer supported by the stopper 315, and the flip plate 307 is flipped downward by gravity to achieve the falling of the specimen. Among them, the stopper 309 and the stopper 315 together form a stopper.

[0040] A locking nut 312 mounted on the lever 309 is provided between the adjusting cylinder 314 and the guide rail support 310, and a spring 311 sleeved on the lever 309 is provided between the locking nut 312 and the guide rail support 310. The spring 311 presses the locking nut 312 to make the lever 309 in a locked position when no external force is applied, so as to prevent the lever 309 from loosening and causing the specimen to fall. The distance between the locking nut 312 and the guide rail support 310 can be adjusted by rotating the locking nut 312 to adjust the elastic force of the spring 311.

[0041] like Figure 1-Figure 3As shown, the drop test mechanism 3 is driven to rise and fall by the lifting mechanism 2, which includes a mounting seat 201 arranged on the mounting frame 1 and an electric winch 202 fixed on the mounting seat 201. Two fixed pulleys 203 are installed on the top of the top plate 104, and the cable of the electric winch 202 is wound around the fixed pulley 203. The lifting mechanism 2 also includes a movable pulley 204. After the end of the cable passes around the fixed pulley 203, it passes around the movable pulley 204 from top to bottom, and then extends upward and is fixed to the bottom of the top plate 104. The principle of the movable pulley 204 is used to reduce the pulling force required to lift the drop test mechanism 3. A lifting ring 303 is provided on the connecting frame 302, and the movable pulley 204 is connected to the lifting ring 303. Specifically, the movable pulley 204 is connected to the lifting ring 303 through a connecting rope, the lower end of the connecting rope is connected to the lifting ring 303, and the upper end of the connecting rope is connected to the central axis of the movable pulley 204; or, the movable pulley 204 is connected to the lifting ring 303 through two ear plates, the lower end of the ear plate is connected to the lifting ring 303, and the upper end of the ear plate is sleeved on the central axis of the movable pulley 204. The connecting frame 302 is also provided with a running wheel 304, which is fitted with the H-shaped steel to improve the stability of the connecting frame 302 during the lifting process.

[0042] A tape measure box 4 is also installed on the bottom plate 101 of the mounting frame 1, and a tape measure is installed in the tape measure box 4. A tape measure fixing plate 306 is provided on the drop test mechanism 3, and the tape measure fixing plate 306 is used to fix the initial end of the tape measure. After the drop test mechanism 3 rises, the tape measure of the tape measure box 4 is pulled out to measure the rising height of the drop test mechanism 3.

[0043] The upper and lower ends of the mounting frame 1 are both equipped with travel switches 5. The drop test mechanism 3 is provided with a limit trigger plate 305 that cooperates with the travel switch 5. When the limit trigger plate 305 touches the travel switch 5, the electric winch 202 stops rotating to stop the drop test mechanism 3 at the set position. When the drop test mechanism 3 touches the bottom travel switch 5, the drop test mechanism 3 stops at the lower end of the mounting frame 1, which is convenient for placing the fireproof bag sample; when the drop test mechanism 3 touches the top travel switch 5, the drop test mechanism 3 stops at the upper end of the mounting frame 1, five meters from the ground, so as to perform a drop test.

[0044] Embodiment 2 of the fireproof bag anti-drop tester provided by the utility model:

[0045] The main difference between it and Example 1 is:

[0046] In this embodiment, two guide rail supports are provided to improve the load-bearing effect and avoid the problem of the gear lever tilting due to excessive pressure.

[0047] Embodiment 3 of the fireproof bag anti-drop tester provided by the utility model:

[0048] The main difference between it and Example 1 is:

[0049] In Example 1, the lifting mechanism includes a mounting seat arranged on the mounting frame and an electric winch fixed on the mounting seat. Two fixed pulleys are installed on the top of the mounting frame. The cable of the electric winch is wound around the fixed pulleys, and the ends of the cables are fixed on the mounting frame. A movable pulley is provided on the cable. The movable pulley principle is used to reduce the tension required for lifting the drop test mechanism. A lifting ring is provided on the connecting frame, and the movable pulley is connected to the lifting ring.

[0050] In this embodiment, the lifting mechanism includes a sprocket rotatably mounted on the top of the mounting frame, the sprocket is driven by a reduction motor, a chain is wound around the sprocket, one end of the chain is connected to the drop test mechanism, and the other end of the chain is connected to a counterweight to reduce the pulling force required to lift the drop test mechanism.

[0051] Embodiment 4 of the fireproof bag anti-drop tester provided by the utility model:

[0052] The main difference between it and Example 1 is:

[0053] In Example 1, a shift rod is slidably assembled in the guide rail support, one end of which is connected to the adjusting cylinder through a cylinder joint, and a baffle is installed on the other end of the shift rod. The baffles are arranged on both sides of the shift rod to support and limit the two flip plates respectively, and the flip plates are provided with grooves that cooperate with the baffles.

[0054] In this embodiment, two shift rods are provided to support the two flip plates respectively, and the two shift rods are connected by a connecting rod so that the cylinder can drive the two shift rods at the same time.

[0055] Embodiment 5 of the fireproof bag anti-drop tester provided by the utility model:

[0056] The main difference between it and Example 1 is:

[0057] In this embodiment, a distance measuring guide rod is further provided beside the tape measure box. The distance measuring guide rod is vertically arranged, and a tape measure pointer arranged in the horizontal direction is installed on the distance measuring guide rod. The tape measure reading can be accurately and clearly seen through the tape measure pointer.

[0058] Although this specification has shown and described a plurality of embodiments of the utility model, it is obvious to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art will think of many changes, modifications and alternatives without departing from the idea and spirit of the utility model. It should be understood that in the process of practicing the utility model, various alternatives to the embodiments of the utility model described herein may be adopted. The attached claims are intended to define the scope of protection of the utility model, and therefore cover the modular composition, equivalent or alternatives within the scope of protection of these claims.

Claims

1. Fireproof bag drop test machine, characterized in that: include: Mounting frame (1); A drop test mechanism (3) is used to support and release the support of the sample. When the drop test mechanism (3) lifts the sample to a set height, the support for the sample is released, so that the sample performs a free fall motion to simulate a test fall; A lifting mechanism (2), the lifting mechanism (2) is connected to the drop test mechanism (3) and is used to drive the drop test mechanism (3) to rise and fall, so that the drop test mechanism (3) rises and falls along the extension direction of the mounting frame (1); A tape measure box (4) for fixing a tape measure is provided at the lower end of the mounting frame (1), and a tape measure fixing plate (306) is provided on the drop test mechanism (3). The tape measure fixing plate (306) is used to fix the initial end of the tape measure. After the drop test mechanism (3) rises, the tape measure of the tape measure box (4) is pulled out to measure the rising height of the drop test mechanism (3).

2. The fireproof package drop tester according to claim 1, characterized in that: The drop test mechanism (3) comprises a protection frame (301), the bottom of which is hinged with two flip plates (307), and the bottom of the protection frame (301) is also provided with a slidable stopper, wherein the stopper has a locking position and a drop position in its sliding stroke, wherein the stopper in the locking position is located at the bottom of the two flip plates (307), and forms a limit on the two flip plates (307) to facilitate supporting the sample, and the stopper in the drop position releases the limit on the two flip plates (307), and the stopper forms a avoidance for the two flip plates (307), so that the sample falls due to gravity.

3. The fireproof package drop tester according to claim 2, characterized in that: A connecting frame (302) is provided at the rear side of the protection frame (301), a guide rail support (310) is provided at the bottom of the connecting frame (302), the stopper is slidably assembled on the guide rail support (310), and an adjusting cylinder (314) for driving the stopper to slide is also installed on the connecting frame (302).

4. The fireproof package drop tester according to claim 3, characterized in that: The stopper comprises a stopper rod (309), the outer diameter of which is smaller than the interval between the two flip plates (307), and a stopper plate is arranged at one end of the stopper rod (309) away from the regulating cylinder (314) to limit the two flip plates (307). The two flip plates (307) are provided with grooves (308), the size of the grooves (308) is larger than the size of the stopper plate (315), and when the stopper plate moves to overlap with the grooves (308), the flip plates (307) lack limit and can flip downward, releasing the sample to fall.

5. The fireproof package drop tester according to claim 4, characterized in that: A locking nut (312) mounted on the shift rod (309) is also provided between the regulating cylinder (314) and the guide rail support (310), and a spring (311) sleeved on the shift rod (309) is also provided between the locking nut (312) and the guide rail support (310). The spring (311) presses against the locking nut (312) so that the shift rod (309) is in a locked position when no external force is applied, so as to prevent the shift rod (309) from loosening and causing the specimen to fall.

6. The fireproof package drop tester according to claim 1, characterized in that: The lifting mechanism (2) comprises an electric winch (202) arranged on a mounting frame (1), a fixed pulley (203) being installed on the top of the mounting frame (1), a cable of the electric winch (202) being wound around the fixed pulley (203) and connected to a drop test mechanism (3), and the drop test mechanism (3) is driven to rise and fall by the electric winch (202).

7. The fireproof package drop tester according to claim 6, characterized in that: The lifting mechanism (2) comprises a movable pulley (204) connected to the drop test mechanism (3); one end of the cable passes around the movable pulley (204) from top to bottom, then extends upward and is fixed to the top of the mounting frame (1).

8. The fireproof package drop tester according to claim 6, characterized in that: The drop test mechanism (3) is also provided with walking wheels (304) that fit the mounting frame (1) to improve the stability of the drop test mechanism (3) during lifting and lowering.

9. The fireproof package drop tester according to claim 1, characterized in that: A base plate (102) is provided at the bottom of the mounting frame (1), and a connecting steel frame (103) is provided at the top of the mounting frame (1) to improve the stability of the mounting frame (1).

10. The fireproof bag drop tester according to any one of claims 1 to 9, characterized in that: A travel switch (5) is installed at both the upper and lower ends of the mounting frame (1), and a limit trigger plate (305) cooperating with the travel switch (5) is provided on the drop test mechanism (3).

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