Anti-hanging cable arm with protection function

Abstract

The invention discloses an anti-hanging cable arm with a protection function, which comprises a fixed seat, a rotating arm, a detection device, a locking device and a limit switch, and is characterized in that the fixed seat is mounted on a suspension cage, the fixed seat is connected with one end of the rotating arm through a first rotating shaft, the rotating arm can rotate around the first rotating shaft, and the other end of the rotating shaft is connected with the detection device; the abnormal stress state of the cable can be checked, and whether the cable is hung or not is judged, so that dangers such as hanging-off of the cable and power-off of the cage are avoided; meanwhile, the structure is simple, and the manufacturing cost is low.

Description

Technical Field

[0001] The invention belongs to the field of construction hoists, and in particular relates to an anti-hanging cable arm with a protective function. Background Art

[0002] Construction elevators are also called construction elevators for buildings, outdoor elevators, and construction site lifting cages. As transportation equipment for people and goods, construction elevators are widely used in the field of construction engineering, mainly used for the interior and exterior decoration of high-rise buildings, bridges, chimneys and other construction. Construction elevators mainly include guardrails, chassis, cages, guide rails, drive devices, power supply systems, etc. The power supply system is generally composed of cables, cable drums, cable retainers and cable arms. The cable arms fix the cables and cages and move with them.

[0003] The existing cable arms for construction hoists are generally simple fixing devices that cannot determine the working status of the cable. When the cable is actually used, if there are problems such as hanging cable guards or building scaffolds, the cage will continue to operate, which will cause safety accidents such as cable breakage, cage power failure, and cage deformation. Summary of the invention

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides an anti-hanging cable arm with a protective function, which can check the abnormal stress state of the cable and determine whether the cable is hung, thereby avoiding dangers such as cable hanging and cage power outage; at the same time, it has a simple structure and low manufacturing cost.

[0005] To achieve the above object, the present invention adopts the following technical solution: an anti-hanging cable arm with a protective function, comprising a fixed seat, a rotating arm, a detection device, a locking device and a limit switch, wherein the fixed seat is installed on the cage, the fixed seat is connected to one end of the rotating arm through a first rotating shaft, the rotating arm can rotate around the first rotating shaft, and the other end of the rotating shaft is connected to the detection device;

[0006] The fixing seat comprises a fixing rod and a clamping plate, two clamping plates are fixed on both sides of the fixing rod, the two clamping plates are provided with waist-shaped long holes and a through hole for passing the first rotating shaft, a gap is left between the two clamping plates for passing the power supply cable and the installation rotating arm, and at least one clamping plate is provided with a limit switch;

[0007] The rotating arm comprises an arm, a sleeve and a limit plate. The arm is a box-shaped rectangular structure with openings at both ends. A limit plate is provided in the middle of the arm. One end of the arm is connected to the clamping plate and the other end is connected to the sleeve. The sleeve is circular and a sealing plate with a circular hole is provided at the bottom of the sleeve. A second rotating shaft is provided at the upper end of the arm.

[0008] The detection device comprises a connecting rod, a pressure plate, a detection spring and a cable fixing device, wherein one end of the connecting rod is provided with a thread and the other end is provided with an ear plate, the pressure plate and the detection spring are sleeved outside the connecting rod and connected by a nut, and the cable fixing device is connected to the ear plate by a bolt;

[0009] The locking device includes a locking rod, a locking baffle, a thrust spring, a sleeve and a tightening screw. One end of the locking rod is connected to the connecting rod of the detection device by a nut, and the other end is a structure with a bent hook. A through hole is provided in the middle of the locking rod, and the locking rod is connected to the second rotating shaft through the through hole. The locking baffle is inserted into the waist-shaped long hole of the fixing seat. Thrust springs are provided on both sides of the locking baffle. The ends of the thrust springs are installed in the sleeve, and a spring groove is provided on the rotating arm. The tightening screw is screwed on the spring groove of the rotating arm and tightens the sleeve. A hook is provided in the middle of the locking baffle to cooperate with the structure with a bent hook of the locking rod.

[0010] In the above technical solution, a guide plate is connected to the bottom surface of the arm, and the guide plate is a V-shaped structure.

[0011] In the above technical solution, the locking baffle rod includes a rod body, a hook and a baffle plate, the baffle plates are installed at both ends of the rod body, and the baffle plates are larger than the cross-section of the rod body, and the hook is installed in the middle of the rod body.

[0012] In the above technical solution, the cable fixing device is one of a cable clamp and a cable net.

[0013] In the above technical solution, the limit switch is one of a rocker-type limit switch, a proximity switch, and a photoelectric switch.

[0014] In the above technical solution, a rubber guard is provided above the locking link.

[0015] In the above technical solution, a protective cover is provided on the arm.

[0016] The beneficial effects of the present invention are as follows: the device can detect whether the elevator power supply cable is subjected to abnormal stress, and control the cage to stop when an abnormality occurs, thereby avoiding dangers such as cable breakage and cage power outage; at the same time, it has a simple structure and low cost, can be installed on a general elevator cage, and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a half-section view of the present invention.

[0019] Figure 3 It is the installation schematic diagram of the present invention.

[0020] Figure 4 for Figure 1 The structural front view of the middle fixed seat.

[0021] Figure 5 for Figure 4 Top view of the .

[0022] Figure 6 for Figure 1 Structural front view of the middle rotating arm.

[0023] Figure 7 for Figure 6 Top view of the structure.

[0024] Figure 8 for Figure 1 Schematic diagram of the structure of the detection device.

[0025] Fig. 9 for Figure 1 Schematic diagram of the structure of the locking device.

[0026] Fig.10 for Fig. 9 AA section view.

[0027] Fig.11 for Fig. 9 Schematic diagram of the structure of the locking lever.

[0028] Fig.12 It is a schematic diagram of the action of the present invention when the cable is overloaded downward.

[0029] Fig.13 It is a schematic diagram of the action of the present invention when the cable is abnormally pulled upward.

[0030] Wherein: 1. this device, 11. fixing seat, 12. rotating arm, 13. detection device, 14. locking device, 15. proximity switch, 16. protective cover, 17. rubber guard plate, 18. power supply cable, 19. first rotating shaft, 20. second rotating shaft, 21. hanging cage, 22. cable drum, 111. fixing rod, 112. first clamping plate, 113. second clamping plate, 121. arm, 122. sleeve, 123. limit plate, 124. guide plate, 131. connecting rod, 132. pressure plate, 133. detection spring, 134. cable fixing device, 141. locking connecting rod, 142. locking baffle rod, 143. thrust spring, 144. sleeve two, 145. tightening screw, 1421. rod body, 1422. baffle plate, 1423. hook. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] like Figures 1 to 11The anti-hanging cable arm with a protective function shown in the figure comprises a fixing seat 11, a rotating arm 12, a detection device 13, a locking device 14 and a limit switch 15. The fixing seat 11 is installed on the cage 21. The fixing seat 11 is connected to one end of the rotating arm 12 through a first rotating shaft 19. The rotating arm 12 can rotate around the first rotating shaft 19. The other end of the first rotating shaft is connected to the detection device 13.

[0033] The fixing seat 11 includes a fixing rod 111 and a first clamping plate 112 and a second clamping plate 113. The first clamping plate 112 and the second clamping plate 113 are on both sides of the fixing rod 111. The first clamping plate 112 and the second clamping plate 113 are provided with waist-shaped long holes and through holes for passing the first rotating shaft 19. A gap is left between the first clamping plate 112 and the second clamping plate 113 to pass the power supply cable 18 and the installation rotating arm 12. At least one clamping plate is provided with a limit switch 15.

[0034] The rotating arm 12 includes an arm 121, a sleeve 122 and a limit plate 123. The arm 121 is a box-shaped rectangular structure with openings at both ends. A limit plate 123 is provided in the middle of the arm 121. One end of the arm 121 is connected to the first clamping plate 112 and the second clamping plate 113, and the other end is connected to the sleeve 122. The sleeve 122 is circular, and a sealing plate with a circular hole is provided at the bottom of the sleeve 122. The upper end of the arm 121 is provided with a second rotating shaft 20;

[0035] The detection device 13 includes a connecting rod 131, a pressure plate 132, a detection spring 133 and a cable fixing device 134. One end of the connecting rod 131 is provided with a thread, and the other end is provided with an ear plate. The pressure plate 132 and the detection spring 133 are sleeved outside the connecting rod 131 and connected by nuts. The cable fixing device 134 is connected to the ear plate by bolts.

[0036] When the cable is pulled downward, the connecting rod compresses the spring through the pressure plate, and the tension of the cable is detected by the displacement and compression of the spring. Bolts are installed on the connecting rod 131, and the pressure plate 132 and the detection spring 133 are compressed by the bolts to adjust the installation preload of the detection spring. When the tension is too large, it exceeds the preload of the detection spring, and the connecting rod continues to compress the detection spring downward, thereby triggering the locking device.

[0037] The locking device 14 includes a locking link 141, a locking stop rod 142, a thrust spring 143, a sleeve 144 and a tightening screw 145. One end of the locking link 141 is connected to the connecting rod 131 of the detection device 13 by a nut, and the other end is a structure with a bent hook. A through hole is provided in the middle of the locking link 141, and the locking link is connected to the second rotating shaft 20 through the through hole. The locking stop rod 142 is inserted into the waist-shaped long hole of the fixing seat 11, and thrust springs 143 are provided on both sides of the locking stop rod 142. The ends of the thrust springs are installed in the sleeve 144, and a spring groove is provided on the rotating arm. The tightening screw 145 is screwed on the spring groove of the rotating arm 12 and tightens the sleeve 144. A hook is provided in the middle of the locking baffle 142 to cooperate with the structure with a bent hook of the locking link 141, and the hook of the locking baffle 142 can be hung with the structure with a bent hook of the locking link 141. The thrust spring pressure can be adjusted by adjusting the tightening screw 145. During normal operation, the locking bar and the locking link are hooked to each other through the hook, and the locking bar blocks the rotating arm and compresses the thrust spring. When the cable is subjected to excessive force, the detection device pulls one end of the locking link downward, the locking link rotates and unlocks the mutual hook with the locking bar, and the locking bar is pushed away by the thrust spring and releases the blocking of the rotating arm.

[0038] like Figure 3 As shown, the device 1 is installed on the cage 21 through the fixing seat 11, one end of the power supply cable 18 is in the cable drum 22, and the other end is fixed and passes through the device 1 to supply power to the cage 21.

[0039] In the above technical solution, a guide plate 124 is connected to the bottom surface of the arm 121. The guide plate 124 is a V-shaped structure, which is convenient for passing the cable guard ring.

[0040] In the above technical solution, the locking lever 142 includes a rod body 1421, a hook 1423 and a baffle 1422, the baffle 1422 is installed at both ends of the rod body 1421, and the baffle 1422 is larger than the cross section of the rod body, and the hook 1423 is installed in the middle of the rod body 1421. When installed, the rod body 1421 slides in the waist-shaped long hole of the fixing seat 11, and the two baffles 1422 clamp the rod body 1421 to ensure that the rod body 1421 will not fall out, and the hook is fixed in the middle of the lever.

[0041] In the above technical solution, the cable fixing device 134 is one of a cable clamp and a cable net.

[0042] In the above technical solution, the limit switch 15 is one of a rocker-type limit switch, a proximity switch, and a photoelectric switch.

[0043] In the above technical solution, a rubber guard plate 17 is provided above the locking link 141 .

[0044] In the above technical solution, a protective cover 16 is provided on the arm 121 .

[0045] The protective cover 16 and the rubber guard plate 17 can prevent foreign matter from entering the interior of the cable arm and affecting the function of the locking device. At the same time, foreign matter can also pass through the cable guard ring conveniently, reducing damage to the cable guard ring.

[0046] like Fig.12 As shown, when the cage is moving upward, the power supply cable 18 is caught by foreign objects, resulting in excessive tension. The detection device 13 compresses the detection spring 133 to pull the locking link 141 downward, and the locking link 141 and the locking stop bar 142 are unhooked. The thrust spring 143 pushes the locking stop bar 142 to slide away from the rotating arm 12. The rotating arm 12 loses its restriction and rotates downward. The limit plate 123 leaves the proximity switch 15, and the cage 21 stops running immediately after receiving the signal from the limit switch 15. The rotating arm 12 rotates to release the power supply cable 18 at one end to ensure that the power supply cable 18 will not be damaged before the cage 21 stops.

[0047] like Fig.13 As shown, when the cage is moving downward, the power cable 18 is caught by foreign objects, which pulls the rotating arm 12 upward, and the rotating arm 12 rotates upward, and the limit plate 123 leaves the limit switch 15. The cage 21 stops running immediately after receiving the signal from the limit switch 15. The rotating arm 12 rotates to release the power cable 18 at one end, ensuring that the power cable 18 will not be damaged before the cage 21 stops.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An anti-hanging cable arm with protective function, characterized by: It includes a fixed seat, a rotating arm, a detection device, a locking device and a limit switch. The fixed seat is installed on the cage. The fixed seat is connected to one end of the rotating arm through a first rotating shaft. The rotating arm can rotate around the first rotating shaft. The other end of the rotating shaft is connected to the detection device. The fixing seat comprises a fixing rod and a clamping plate, two clamping plates are fixed on both sides of the fixing rod, the two clamping plates are provided with waist-shaped long holes and a through hole for passing the first rotating shaft, a gap is left between the two clamping plates for passing the power supply cable and the installation rotating arm, and at least one clamping plate is provided with a limit switch; The rotating arm comprises an arm, a sleeve and a limit plate. The arm is a box-shaped rectangular structure with openings at both ends. A limit plate is provided in the middle of the arm. One end of the arm is connected to the clamping plate and the other end is connected to the sleeve. The sleeve is circular and a sealing plate with a circular hole is provided at the bottom of the sleeve. A second rotating shaft is provided at the upper end of the arm. The detection device comprises a connecting rod, a pressure plate, a detection spring and a cable fixing device, wherein one end of the connecting rod is provided with a thread and the other end is provided with an ear plate, the pressure plate and the detection spring are sleeved outside the connecting rod and connected by a nut, and the cable fixing device is connected to the ear plate by a bolt; The locking device includes a locking rod, a locking baffle, a thrust spring, a sleeve and a tightening screw. One end of the locking rod is connected to the connecting rod of the detection device by a nut, and the other end is a structure with a bent hook. A through hole is provided in the middle of the locking rod, and the locking rod is connected to the second rotating shaft through the through hole. The locking baffle is inserted into the waist-shaped long hole of the fixing seat. Thrust springs are provided on both sides of the locking baffle. The ends of the thrust springs are installed in the sleeve, and a spring groove is provided on the rotating arm. The tightening screw is screwed on the spring groove of the rotating arm and tightens the sleeve. A hook is provided in the middle of the locking baffle to cooperate with the structure with a bent hook of the locking rod.

2. The anti-hanging cable arm with protection function according to claim 1 is characterized in that: The bottom surface of the arm is connected with a guide plate, which is a V-shaped structure.

3. The anti-hanging cable arm with protection function according to claim 1 is characterized by: The locking baffle rod comprises a rod body, a hook and a baffle plate, wherein the baffle plates are installed at both ends of the rod body and are larger than the cross section of the rod body, and the hook is installed in the middle of the rod body.

4. The anti-hanging cable arm with protection function according to claim 1 is characterized in that: The cable fixing device is one of a cable clamp and a cable net.

5. The anti-hanging cable arm with protection function according to claim 1 is characterized by: The limit switch is one of a rocker-type limit switch, a proximity switch, and a photoelectric switch.

6. The anti-hanging cable arm with protection function according to claim 1 is characterized by: A rubber guard plate is arranged above the locking connecting rod.

7. The anti-hanging cable arm with protection function according to claim 1 is characterized by: A protective cover is arranged on the arm.

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