An elevator steel belt abnormal elongation detection device

Abstract

The present invention relates to the technical field of elevator steel belt detection, and discloses an elevator steel belt abnormal elongation detection device, comprising a shaft assembly, a counterweight guide rail is provided on the outer side of the shaft assembly, a car guide rail is provided in the shaft assembly, a counterweight plate is movably installed on the counterweight guide rail, a car part is movably installed on the car guide rail, a pulley assembly is provided on the car part, a traction steel belt is transmission-wound in the pulley assembly, a traction assembly is installed at the top end of the shaft assembly, one end of the traction steel belt is fixedly connected to the counterweight plate, and the other end thereof is fixedly connected to the bottom side of the top end of the shaft assembly after passing through the traction assembly and the pulley assembly in sequence. The present invention is provided with a steel belt detection mechanism and a weighing early warning mechanism, which directly judges whether the traction steel belt has abnormal elongation by directly detecting the bandwidth deformation of the traction steel belt, which is more accurate than the traditional detection method by setting sensors, and simultaneously realizes the alarm function of its steel belt abnormal elongation detection.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator steel belt detection, and more particularly to a device for detecting abnormal elongation of an elevator steel belt. Background Art

[0002] Elevators use steel belts or steel ropes for traction during operation. Over time, the steel belts may deform and stretch abnormally due to wear or overload. This abnormally stretched steel belt will reduce its service life and load capacity, and increase the safety risks of the elevator. Therefore, to maintain the safety performance of the elevator, staff will conduct safety inspections on the elevator steel belts.

[0003] However, the existing elevator steel belt abnormal elongation detection device still has the following shortcomings:

[0004] Existing elevator steel belt abnormal elongation detection devices often use sensors to monitor the length changes of the steel belt in real time. However, this measurement method is affected by many factors, such as ambient temperature, humidity, and vibration. These factors may lead to inaccurate test results, thereby affecting the accuracy of the test.

[0005] Therefore, in order to solve the above problems, it is necessary to provide an elevator steel belt abnormal elongation detection device. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides an elevator steel belt abnormal elongation detection device to solve the problems existing in the above-mentioned background technology.

[0007] The present invention provides the following technical solution: an elevator steel belt abnormal elongation detection device, comprising a shaft assembly, a counterweight guide rail is provided on the outer side of the shaft assembly, a car guide rail is provided in the shaft assembly, a counterweight plate is movably installed on the counterweight guide rail, a car part is movably installed on the car guide rail, a pulley assembly is provided on the car part, a traction steel belt is transmitted and wound around the pulley assembly, a traction assembly is installed at the top of the shaft assembly, one end of the traction steel belt is fixedly connected to the counterweight plate, and the other end thereof is fixedly connected to the bottom side of the top end of the shaft assembly after passing through the traction assembly and the pulley assembly in sequence, the device also includes a steel belt detection mechanism, the steel belt detection mechanism is arranged at the bottom side of the top of the shaft assembly, and a weighing early warning mechanism is provided between the top of the car part and the pulley assembly;

[0008] The belt body of the traction steel belt passes through the steel belt detection mechanism. The change in the belt body width of the traction steel belt will cause the steel belt detection mechanism to deform. The deformation of the steel belt detection mechanism will cause the weighing early warning mechanism to issue an alarm.

[0009] Further, the hoistway assembly includes four hoist columns. A load-bearing bottom plate is fixedly installed at the bottom end of the hoist columns, and a top plate is fixedly installed at the top end of the hoist columns. The counterweight guide rail is arranged between the hoist columns, and the car guide rail is arranged between the load-bearing bottom plate and the top plate. A speed limit assembly is provided on the top plate.

[0010] Further, the traction assembly includes a seat plate. A traction motor is fixedly installed on the seat plate. A traction wheel is fixedly sleeved on the drive shaft of the traction motor. The traction steel belt sequentially bypasses the traction wheel and the pulley assembly and is fixedly connected to the bottom side of the top plate.

[0011] Further, both sides of the car component are movably sleeved on the car guide rail. The pulley assembly includes a traction frame. A wheel groove is provided in the traction frame. Wheel shafts are symmetrically sleeved in the inner wall of the wheel groove. Traction wheels are movably sleeved on the shafts of the wheel shafts. The belt body of the traction steel belt sequentially bypasses the symmetrically distributed traction wheels.

[0012] Further, the weighing and warning mechanism includes a bottom connecting plate. The upper surface of the bottom connecting plate is fixedly connected to the bottom surface of the traction frame. A weighing controller is fixedly installed on the bottom connecting plate. A lower folding plate is fixedly installed at the bottom end of the bottom connecting plate. An upper folding plate is fixedly installed at the top end of the car component. The lower folding plate and the upper folding plate are complementary. The left end of the lower folding plate is fixedly connected to a left connecting column. The shaft of the left connecting column movably passes through the plate body of the upper folding plate and is fixedly connected to the bottom connecting plate. The right end of the upper folding plate is fixedly connected to a right connecting column. The shaft of the right connecting column movably passes through the plate body of the lower folding plate and is fixedly connected to the top end of the car component. Buffer springs are sleeved on the shafts of the left connecting column and the right connecting column. A pressure sensor is fixedly installed on the plate body of the lower folding plate. The pressure-bearing end of the pressure sensor contacts the plate surface of the upper folding plate. The pressure sensor is electrically connected to the weighing controller.

[0013] Further, the steel belt detection mechanism includes two shaft support plates, which are fixedly installed at the front and rear ends of the bottom side of the top plate. A guide shaft is connected between the shaft support plates. A guide wheel is movably sleeved on the guide shaft. The guide wheel contacts the belt body of the traction steel belt and keeps the upper section of the belt body vertical.

[0014] Further, a left block is fixedly installed on one side of the bottom of the top plate, and a right block is fixedly installed on the other side of the bottom of the top plate. Two groups of telescopic rods are fixedly connected to the opposite surfaces of the left block and the right block. Compression springs are sleeved on the telescopic ends of the telescopic rods. The end of the rod body of the telescopic rod connected to the left block is fixedly connected to a left pressing block, and a contact rod is fixedly connected to the end face of the left pressing block. The end of the rod body of the telescopic rod connected to the right block is fixedly connected to a right pressing block. A fitting groove is formed in the right pressing block, and an alarm switch is arranged at the end of the fitting groove of the right pressing block. The contact rod is movably sleeved in the fitting groove. Side shafts are connected between the opposite surfaces of the left pressing block. A pressing wheel is movably sleeved on the shaft body of the side shaft. The belt body of the traction steel belt passes through between the two pressing wheels and contacts them. The distance between the end of the contact rod and the alarm switch is not greater than the maximum allowable deformation amount of the traction steel belt. The alarm switch is electrically connected to the weighing controller.

[0015] Technical effects and advantages of the present invention:

[0016] The present invention is provided with a steel belt detection mechanism and a weighing early warning mechanism. When the traction steel belt undergoes abnormal elongation due to reasons such as wear or overload, the width of its belt body will gradually decrease. At this time, when the belt body of the traction steel belt passes through the pressing wheel, the distance between the two pressing wheels on both sides will decrease, so that the distance between the contact rod and the alarm switch decreases. When the deformation amount of the belt body width of the traction steel belt affects its service life and load, the contact rod contacts and triggers the alarm switch, and the alarm switch triggers the alarm function of the weighing controller. This device directly judges whether the traction steel belt undergoes abnormal elongation by directly detecting the deformation amount of the bandwidth of the traction steel belt, which is more accurate than the traditional method of setting sensors for detection, and at the same time realizes the alarm function for detecting abnormal elongation of the steel belt. Description of the drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the hoistway assembly of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the weighing early warning mechanism of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the steel belt detection mechanism of the present invention.

[0021] Figure 5 It is a schematic diagram of a partial cross-section structure of the steel belt detection mechanism of the present invention.

[0022] The accompanying drawings are marked as follows: 1. shaft assembly; 101. shaft column; 102. load-bearing bottom plate; 103. top plate; 2. counterweight guide rail; 3. car guide rail; 4. counterweight plate; 5. car member; 6. pulley assembly; 601. traction frame; 602. wheel groove; 603. wheel axle; 604. traction sheave; 7. traction steel belt; 8. traction assembly; 801. seat plate; 802. traction motor; 803. traction sheave; 9. steel belt detection mechanism; 901. shaft support plate; 902. guide shaft; 903. guide sheave; 904. Left block; 905. Right block; 906. Telescopic rod; 907. Compression spring; 908. Left pressure block; 909. Touch rod; 910. Right pressure block; 911. Alarm switch; 912. Side shaft; 913. Pressure wheel; 10. Weighing warning mechanism; 1001. Bottom plate; 1002. Weighing controller; 1003. Lower folding plate; 1004. Upper folding plate; 1005. Left connecting column; 1006. Right connecting column; 1007. Buffer spring; 1008. Pressure sensor; 11. Speed limit assembly. DETAILED DESCRIPTION

[0023] The technical solutions of the present invention will be described clearly and completely below in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The abnormal elongation detection device for elevator steel belts involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained without creative work by ordinary technicians in this field fall within the scope of protection of the present invention.

[0024] Reference Figure 1 and Figure 2 The present invention provides an elevator steel belt abnormal elongation detection device, comprising a shaft assembly 1, wherein the shaft assembly 1 comprises four shaft columns 101, wherein a load-bearing bottom plate 102 is fixedly mounted at the bottom end of the shaft column 101, and a top plate 103 is fixedly mounted at the top end of the shaft column 101, a counterweight guide rail 2 is arranged between the shaft columns 101, and a car guide rail 3 is arranged between the load-bearing bottom plate 102 and the top plate 103, a counterweight plate 4 is movably mounted on the counterweight guide rail 2, a car part 5 is movably mounted on the car guide rail 3, and a pulley assembly 6 is provided on the car part 5, wherein a traction steel belt is transmitted and wound around the pulley assembly 6. 7. A traction assembly 8 is installed on the top plate 103. The traction assembly 8 includes a seat plate 801. A traction motor 802 is fixedly mounted on the seat plate 801. The drive shaft of the traction motor 802 is fixedly sleeved with a traction sheave 803. One end of the traction steel belt 7 is fixedly connected to the counterweight plate 4, and the other end thereof passes through the traction sheave 803 and the pulley assembly 6 in sequence and is fixedly connected to the bottom side of the top plate 103. A steel belt detection mechanism 9 is provided on the bottom side of the top plate 103. A weighing warning mechanism 10 is provided between the top of the car member 5 and the pulley assembly 6. A speed limiting component 11 is provided on the top plate 103.

[0025] In this embodiment, the traction motor 802 drives the traction wheel 803 to make the traction steel belt 7 operate, so as to achieve the traction effect on the car component 5. The speed limiting component 11 provides a speed limiting effect for the movement of the car component 5. The specific structures and working principles of the above components will be described in detail later.

[0026] Refer to Figure 3 , both sides of the car component 5 are movably sleeved with the car guide rails 3. The pulley assembly 6 includes a traction frame 601. A wheel groove 602 is provided in the traction frame 601. Wheel shafts 603 are symmetrically sleeved in the inner wall of the wheel groove 602. Traction wheels 604 are movably sleeved on the shafts of the wheel shafts 603. The belt body of the traction steel belt 7 sequentially bypasses the symmetrically distributed traction wheels 604. The weighing and warning mechanism 10 includes a bottom connecting plate 1001. The upper surface of the bottom connecting plate 1001 is fixedly connected to the bottom surface of the traction frame 601. A weighing controller 1002 is fixedly installed on the bottom connecting plate 1001. A lower folding plate 1003 is fixedly installed at the bottom end of the bottom connecting plate 1001. An upper folding plate 1004 is fixedly installed at the top end of the car component 5. The lower folding plate 1003 and the upper folding plate 1004 are complementary. The left end of the lower folding plate 1003 is fixedly connected to a left connecting column 1005. The shaft of the left connecting column 1005 movably passes through the plate body of the upper folding plate 1004 and is fixedly connected to the bottom connecting plate 1001. The right end of the upper folding plate 1004 is fixedly connected to a right connecting column 1006. The shaft of the right connecting column 1006 movably passes through the plate body of the lower folding plate 1003 and is fixedly connected to the top end of the car component 5. Buffer springs 1007 are sleeved on the shafts of the left connecting column 1005 and the right connecting column 1006. A pressure sensor 1008 is fixedly installed on the plate body of the lower folding plate 1003. The pressure-bearing end of the pressure sensor 1008 contacts the plate surface of the upper folding plate 1004. The pressure sensor 1008 is electrically connected to the weighing controller 1002;

[0027] In this embodiment, the total weight of the car component 5 and the people or objects in the car component 5 will exert pressure on the pressure sensor 1008. Its weight will be measured by the pressure sensor 1008 and converted into an electrical signal and transmitted to the weighing controller 1002. By setting a corresponding alarm threshold for the weighing controller 1002, the alarm function of the device in the overloaded state of the car component 5 is realized.

[0028] Refer to Figure 4 and Figure 5, the steel belt detection mechanism 9 includes shaft support plates 901. The number of the shaft support plates 901 is two, and they are fixedly installed at the front and rear ends of the bottom side of the top plate 103. A guide shaft 902 is connected between the shaft support plates 901. A guide wheel 903 is movably sleeved on the guide shaft 902. The guide wheel 903 contacts the body of the traction steel belt 7 and keeps the upper section of its body vertical. On one side of the bottom of the top plate 103, a left block 904 is fixedly installed. On the other side of the bottom of the top plate 103, a right block 905 is fixedly installed. On the opposite faces of the left block 904 and the right block 905, two groups of telescopic rods 906 are fixedly connected. Compression springs 907 are sleeved on the telescopic ends of the telescopic rods 906. At the end of the rod body of the telescopic rod 906 connected to the left block 904, a left pressing block 908 is fixedly connected. At the end face of the left pressing block 908, a contact rod 909 is fixedly connected. At the end of the rod body of the telescopic rod 906 connected to the right block 905, a right pressing block 910 is fixedly connected. A fitting groove is formed in the right pressing block 910. An alarm switch 911 is arranged at the end of the fitting groove of the right pressing block 910. The contact rod 909 is movably sleeved in the fitting groove. Side shafts 912 are connected between the opposite faces of the left pressing block 908. A pressing wheel 913 is movably sleeved on the shaft body of the side shaft 912. The body of the traction steel belt 7 passes through between the two pressing wheels 913 and contacts them. The distance between the end of the contact rod 909 and the alarm switch 911 is not greater than the maximum allowable deformation amount of the traction steel belt 7. The alarm switch 911 is electrically connected to the weighing controller 1002;

[0029] In this embodiment, when the traction steel belt 7 undergoes abnormal elongation due to reasons such as wear or overload, the width of its body will gradually decrease. At this time, when the body of the traction steel belt 7 passes through the pressing wheels 913, the distance between the two pressing wheels 913 on both sides will decrease, so that the distance between the contact rod 909 and the alarm switch 911 decreases. When the deformation amount of the width of the body of the traction steel belt 7 affects its service life and load, the contact rod 909 contacts and triggers the alarm switch 911, and the alarm switch 911 triggers the alarm function of the weighing controller 1002, thereby realizing the function of detecting and alarming the abnormal elongation of the steel belt of the device.

[0030] The working principle of the present invention: When the device is in use, when the traction steel belt 7 undergoes abnormal elongation due to reasons such as wear or overload, the width of its body will gradually decrease. At this time, when the body of the traction steel belt 7 passes through the pressing wheels 913, the distance between the two pressing wheels 913 on both sides will decrease, so that the distance between the contact rod 909 and the alarm switch 911 decreases. When the deformation amount of the width of the body of the traction steel belt 7 affects its service life and load, the contact rod 909 contacts and triggers the alarm switch 911, and the alarm switch 911 triggers the alarm function of the weighing controller 1002, thereby realizing the function of detecting and alarming the abnormal elongation of the steel belt of the device.

[0031] The following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense, which can be a mechanical connection or an electrical connection, or the communication inside two components, and can be directly connected. The terms "upper", "lower", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;

[0032] Second, in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0033] Finally, the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An elevator steel belt abnormal elongation detection device, comprising a shaft assembly (1), a counterweight guide rail (2) is provided on the outer side of the shaft assembly (1), a car guide rail (3) is provided in the shaft assembly (1), a counterweight plate (4) is movably installed on the counterweight guide rail (2), a car member (5) is movably installed on the car guide rail (3), a pulley assembly (6) is provided on the car member (5), a traction steel belt (7) is wound around the pulley assembly (6), a traction assembly (8) is installed at the top end of the shaft assembly (1), one end of the traction steel belt (7) is fixedly connected to the counterweight plate (4), and the other end thereof is fixedly connected to the bottom side of the top end of the shaft assembly (1) after passing through the traction assembly (8) and the pulley assembly (6) in sequence, and is characterized in that: The device further includes a steel belt detection mechanism (9), and the steel belt detection mechanism (9) is arranged at the bottom side of the top of the hoistway assembly (1). A weighing warning mechanism (10) is provided between the top of the car member (5) and the pulley assembly (6). The belt body of the traction steel belt (7) passes through the steel belt detection mechanism (9). When the width of the belt body of the traction steel belt (7) changes, the steel belt detection mechanism (9) will be deformed, and when the steel belt detection mechanism (9) is deformed, the weighing warning mechanism (10) will issue an alarm. The hoistway assembly (1) includes four hoistway columns (101). A load-bearing bottom plate (102) is fixedly installed at the bottom end of the hoistway columns (101), and a top plate (103) is fixedly installed at the top end of the hoistway columns (101). The counterweight guide rail (2) is arranged between the hoistway columns (101), the car guide rail (3) is arranged between the load-bearing bottom plate (102) and the top plate (103), and a speed limiting assembly (11) is provided on the top plate (103). The steel belt detection mechanism (9) includes shaft support plates (901). The number of the shaft support plates (901) is two, and they are fixedly installed at the front and rear ends of the bottom side of the top plate (103). A guide shaft (902) is connected between the shaft support plates (901). A guide wheel (903) is movably sleeved on the guide shaft (902). The guide wheel (903) contacts the belt body of the traction steel belt (7) and keeps the upper section of the belt body vertical. A left block (904) is fixedly installed on one side of the bottom of the top plate (103), and a right block (905) is fixedly installed on the other side of the bottom of the top plate (103). Two groups of telescopic rods (906) are fixedly connected to the opposite surfaces of the left block (904) and the right block (905). Compression springs (907) are sleeved on the telescopic ends of the telescopic rods (906). The end of the rod body of the telescopic rod (906) connected to the left block (904) is fixedly connected to a left pressing block (908). A contact rod (909) is fixedly connected to the end face of the left pressing block (908). The end of the rod body of the telescopic rod (906) connected to the right block (905) is fixedly connected to a right pressing block (910). A fitting groove is formed in the right pressing block (910), and an alarm switch (911) is arranged at the end of the fitting groove of the right pressing block (910). The contact rod (909) is movably sleeved in the fitting groove. Side shafts (912) are connected between the opposite surfaces of the left pressing block (908). A pressing wheel (913) is movably sleeved on the shaft body of the side shafts (912). The belt body of the traction steel belt (7) passes through between the two pressing wheels (913) and contacts them. The distance between the end of the contact rod (909) and the alarm switch (911) is not greater than the maximum allowable deformation amount of the traction steel belt (7). The alarm switch (911) is electrically connected to a weighing controller (1002).

2. The elevator steel belt abnormal elongation detection device according to claim 1, wherein: The traction assembly (8) includes a seat plate (801) on which a traction motor (802) is fixedly installed. The drive shaft of the traction motor (802) is fixedly sleeved with a traction wheel (803). The traction steel belt (7) sequentially bypasses the traction wheel (803) and the pulley assembly (6) and then is fixedly connected to the bottom side of the top plate (103).

3. An elevator steel belt abnormal elongation detection device according to claim 1, characterized in that: Both sides of the car member (5) are movably sleeved with car guide rails (3). The pulley assembly (6) includes a traction frame (601) provided with a wheel groove (602). Symmetrically sleeved in the inner wall of the wheel groove (602) are wheel shafts (603). Traction wheels (604) are movably sleeved on the shafts of the wheel shafts (603). The belt body of the traction steel belt (7) sequentially bypasses the symmetrically distributed traction wheels (604).

4. An elevator steel belt abnormal elongation detection device according to claim 3, characterized in that: The weighing and warning mechanism (10) includes a bottom connecting plate (1001) whose upper surface is fixedly connected to the bottom surface of the traction frame (601). A weighing controller (1002) is fixedly installed on the bottom connecting plate (1001). A lower folding plate (1003) is fixedly installed at the bottom end of the bottom connecting plate (1001). An upper folding plate (1004) is fixedly installed at the top end of the car member (5). The lower folding plate (1003) and the upper folding plate (1004) are complementary. The left end of the lower folding plate (1003) is fixedly connected to a left connecting column (1005). The shaft of the left connecting column (1005) movably passes through the plate body of the upper folding plate (1004) and is fixedly connected to the bottom connecting plate (1001). The right end of the upper folding plate (1004) is fixedly connected to a right connecting column (1006). The shaft of the right connecting column (1006) movably passes through the plate body of the lower folding plate (1003) and is fixedly connected to the top end of the car member (5). Buffer springs (1007) are sleeved on the shafts of the left connecting column (1005) and the right connecting column (1006). A pressure sensor (1008) is fixedly installed on the plate body of the lower folding plate (1003). The pressure-bearing end of the pressure sensor (1008) contacts the plate surface of the upper folding plate (1004). The pressure sensor (1008) is electrically connected to the weighing controller (1002).

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