Hoisting system with safety protection function

Abstract

The invention discloses a hoisting system with a safety protection function, and relates to the technical field of cranes. A mechanical alarm mechanism and an electronic alarm mechanism are integrated, and accurate alarm of the goods falling position is achieved through the multi-layer force conduction design of beam frame detection, rack transmission, friction column permanent magnet capture and the like. The system has an independent power generation function and can still send out an alarm signal under the condition of no power support; meanwhile, sensitivity and safety are improved through slow pressure sensing and a dynamic isolation structure. The multi-point loudspeaker volume control technology provides accurate escape guidance for constructors, construction risks are reduced fundamentally, and remarkable practicability and innovative significance are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of cranes, and in particular to a hoisting and lifting system with a safety protection function. Background Art

[0002] In the fields of construction, ports, warehousing, etc., lifting and hoisting systems are widely used in the transportation and handling of goods. However, the existing lifting and hoisting systems have many defects in safety protection when the goods fall, which can easily lead to safety accidents, casualties and property losses. The existing lifting and hoisting systems have the problem of low safety when the goods fall. Some traditional systems rely only on electronic sensors to detect weight changes, lack safety redundancy settings and mechanical alarm mechanisms, and are prone to alarm failure due to power outages or sensor failures. In addition, most systems have a single alarm signal and fail to effectively locate the area where the goods fall, increasing the risk of injury to construction workers. Some systems rely on external power supplies and cannot operate normally in the event of a power outage, and cannot guarantee all-round construction safety. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a lifting and hoisting system with a safety protection function, comprising a supporting beam plate, an auxiliary support plate fixedly installed on the supporting beam plate, and a starting motor and a generator fixedly installed on the auxiliary support plate; wherein two parallel detection beam frame sliding rods are also fixedly installed on the supporting beam plate, and the detection beam frame is slidably arranged on the two detection beam frame sliding rods, and a reset spring is arranged around each detection beam frame sliding rod, and the two ends of the reset spring are fixedly matched with the detection beam frame and the supporting beam plate; an extrusion slide rod bracket is fixedly installed on the side of the detection beam frame, an extrusion slide rod is slidably arranged on the extrusion slide rod bracket, and an extrusion plate is fixedly arranged at the bottom end of the extrusion slide rod, and a force-sensitive resistor is arranged directly below the extrusion plate, and the force-sensitive resistor is overlapped on the supporting beam plate, and an extrusion spring is arranged around the extrusion slide rod, and the two ends of the extrusion spring are fixed with the extrusion slide rod bracket and the extrusion plate, wherein the extrusion plate is in contact with and extruded with the force-sensitive resistor; and also includes at least four speakers arranged around the construction site for providing spatial audio information to personnel.

[0004] Preferably, a lifting frame is fixedly installed on the detection beam frame, a hook connector is fixed on the bottom of the lifting frame, and a hook is fixed on the hook connector; a positioning block is fixed on the side of the detection beam frame facing the supporting beam plate, and the positioning block is in contact and cooperation with the supporting beam plate.

[0005] Preferably, a friction passive disk and an intermediate rotating disk are also rotatably mounted on the auxiliary bracket plate, and the friction passive disk and the intermediate rotating disk are matched through a transmission belt transmission, wherein the intermediate rotating disk is fixed on the input shaft of the generator, and wherein the friction passive disk is rotationally matched with the output shaft of the starting motor.

[0006] Preferably, a spline shaft is fixed on the output shaft of the starter motor, and an electromagnetic friction disk is sleeved on the spline shaft by spline sliding. The electromagnetic friction disk and the passive friction disk are frictionally matched, and the electromagnetic friction disk and the passive friction disk are magnetically matched.

[0007] Preferably, a closed support frame is also fixed on the auxiliary bracket plate, and the closed support frame is rotatably matched with the triangular groove and the electromagnetic friction disk to prevent the electromagnetic friction disk from slipping off the spline shaft; a gear is also rotatably mounted on the closed support frame, and an inner rotating block is coaxially fixed on the gear, and an outer rotating sleeve of the inner rotating block is provided with an outer rotating sleeve, wherein the middle rotating disk is fixedly matched with the outer rotating sleeve.

[0008] Preferably, at least two triangular grooves are provided on the inner rotating block, and a permanent magnet is fixed at the narrow end of the triangular groove, and the permanent magnet does not contact the outer rotating sleeve; the lateral magnetic force of the permanent magnet is matched with a friction column, and a friction column tension spring is fixed between the friction column and the vertical surface of the triangular groove; wherein the longest side of the permanent magnet is smaller than the diameter of the friction column, so that the friction column cannot contact the permanent magnet when it moves toward the permanent magnet.

[0009] Preferably, a rack is fixedly mounted on the detection beam, the rack is slidably matched with the closed support frame, and the rack is meshed with the gear for transmission.

[0010] Preferably, the supporting beam plate is fixedly mounted on the inner wall of the outer shell, a bottom dust cover is fixed to the bottom of the outer shell, and the outer shell is fixedly connected to the end of the steel wire rope of the crane.

[0011] Preferably, the force-sensitive resistor is connected in series with a fixed resistor R1 in a DC circuit, and the middle position between the force-sensitive resistor and the fixed resistor R1 is connected to the negative electrode of the DC power supply through capacitor C1 and the relay coil in turn, and the middle position between the fixed capacitor C1 and the relay coil is connected to the negative electrode of the power supply through the fixed resistor R2.

[0012] Preferably, the capacitor C1 and the fixed resistor R2 are installed in a manner that is easy to replace; wherein the normally open contact of the relay serves as a starting switch for starting the motor and the electromagnetic friction disk.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention can detect the weight change of the cargo when it falls, quickly activate the mechanical mechanism, and combine the horizontal coordinate information of the cargo transported by the crane arm to achieve the precise positioning and alarm function of the dropped cargo. The multi-point volume control function of the speaker is used to guide the construction workers to quickly move away from the dangerous area, thereby significantly reducing the risk of injury to the construction workers; (2) The present invention converts mechanical energy into electrical energy and uses a generator to output an alarm signal. It does not require external power support and can still work normally even when the power system fails, ensuring the reliability and continuity of the safety alarm; (3) When the cargo falls, the mechanical and electronic dual-channel alarm mechanisms of the present invention are activated simultaneously to ensure the efficiency and redundancy of the alarm. When the electronic part fails, the mechanical system can still trigger the alarm through the generator mechanism, greatly improving the safety and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the shell structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 3 It is a structural schematic diagram of the positioning block of the present invention.

[0017] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at point A in the middle.

[0018] Figure 5 It is a structural schematic diagram of the auxiliary support plate of the present invention.

[0019] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point B in the middle.

[0020] Figure 7 It is a schematic diagram of the structure of the inner rotating block of the present invention.

[0021] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point C in the middle.

[0022] Fig. 9 It is a structural schematic diagram of the tension spring of the friction column of the present invention.

[0023] Fig.10 It is a structural schematic diagram of the spline shaft of the present invention.

[0024] Fig.11 This is the principle diagram of starting the force-sensitive resistor of the present invention.

[0025] In the figure: 101-housing; 102-bottom dust cover; 103-support beam plate; 104-auxiliary bracket plate; 105-detection beam frame sliding rod; 106-detection beam frame; 107-positioning block; 108-hanging frame; 109-reset spring; 110-extrusion slide rod bracket; 111-extrusion spring; 112-extrusion slide rod; 113-force sensitive resistor; 114-starting motor; 115-generator; 116- Closed support frame; 117- rack; 118- gear; 119- inner rotating block; 120- outer rotating sleeve; 121- electromagnetic friction disc; 122- friction passive disc; 123- intermediate rotating disc; 124- transmission belt; 125- spline shaft; 126- triangular groove; 127- permanent magnet; 128- friction column; 129- friction column tension spring; 130- hook connector; 131- hook; 132- extrusion plate. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-11 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0027] The present invention provides a hoisting and lifting system with a safety protection function, including a support beam 103, on which an auxiliary bracket plate 104 is fixedly installed, and a starting motor 114 and a generator 115 are fixedly installed; wherein two parallel detection beam frame sliding rods 105 are also fixedly installed on the support beam 103, and a detection beam frame 106 is slidably arranged on the two detection beam frame sliding rods 105, and each detection beam frame sliding rod 105 is surrounded by a reset spring 109, and the two ends of the reset spring 109 are fixedly matched with the detection beam frame 106 and the support beam 103; the detection beam frame 106 The side is fixedly installed with an extrusion slide bar bracket 110, and an extrusion slide bar 112 is slidably arranged on the extrusion slide bar bracket 110. An extrusion plate 132 is fixedly arranged at the bottom end of the extrusion slide bar 112. A force-sensitive resistor 113 is arranged directly below the extrusion plate 132. The force-sensitive resistor 113 is overlapped on the support beam plate 103. An extrusion spring 111 is arranged around the extrusion slide bar 112. The two ends of the extrusion spring 111 are fixed to the extrusion slide bar bracket 110 and the extrusion plate 132, wherein the extrusion plate 132 is in contact and extrusion with the force-sensitive resistor 113. It also includes at least four speakers arranged around the construction site to provide spatial audio information to personnel. A hanging frame 108 is fixedly installed on the detection beam frame 106, and a hook connector 130 is fixed at the bottom of the hanging frame 108, and a hook 131 is fixed on the hook connector 130; a positioning block 107 is fixed on the side of the detection beam frame 106 facing the support beam plate 103, and the positioning block 107 is in contact and cooperation with the support beam plate 103. A friction passive disk 122 and an intermediate rotating disk 123 are also rotatably mounted on the auxiliary bracket plate 104. The friction passive disk 122 and the intermediate rotating disk 123 are matched by transmission through a transmission belt 124, wherein the intermediate rotating disk 123 is fixed on the input shaft of the generator 115, wherein the friction passive disk 122 is matched by rotation with the output shaft of the starter motor 114. A spline shaft 125 is fixed on the output shaft of the starter motor 114, and an electromagnetic friction disk 121 is sleeved on the spline shaft 125 by spline sliding, and the electromagnetic friction disk 121 is matched by friction transmission with the friction passive disk 122, and the electromagnetic friction disk 121 is matched by magnetic force with the friction passive disk 122.

[0028] A closed support frame 116 is also fixed on the auxiliary bracket plate 104, and the closed support frame 116 rotates with the triangular groove 126 and the electromagnetic friction disk 121 to prevent the electromagnetic friction disk 121 from slipping off the spline shaft 125; a gear 118 is also rotatably mounted on the closed support frame 116, and an inner rotating block 119 is coaxially fixed on the gear 118, and an outer rotating sleeve 120 is provided on the outer rotating sleeve of the inner rotating block 119, wherein the intermediate rotating disk 123 is fixedly matched with the outer rotating sleeve 120. At least two triangular grooves 126 are provided on the inner rotating block 119, and a permanent magnet 127 is fixed at the narrow end of the triangular groove 126, and the permanent magnet 127 does not contact the outer rotating sleeve 120; the lateral magnetic force of the permanent magnet 127 is matched with a friction column 128, and a friction column tension spring 129 is fixed between the friction column 128 and the vertical surface of the triangular groove 126; wherein the longest side of the permanent magnet 127 is smaller than the diameter of the friction column 128, so that the friction column 128 cannot contact the permanent magnet 127 when moving toward the permanent magnet 127. A rack 117 is fixedly installed on the detection beam frame 106, and the rack 117 is slidably matched with the closed support frame 116, and the rack 117 is meshed with the gear 118 for transmission. The support beam plate 103 is fixedly installed on the inner wall of the outer shell 101, and a bottom dust cover 102 is fixed on the bottom of the outer shell 101, and the outer shell 101 is fixedly connected to the end of the wire rope of the crane.

[0029] The force-sensitive resistor 113 is connected in series with a fixed resistor R1 in a DC circuit, and the middle position between the force-sensitive resistor 113 and the fixed resistor R1 is connected to the negative pole of the DC power supply through the capacitor C1 and the relay coil in turn, and the middle position between the fixed capacitor C1 and the relay coil is connected to the negative pole of the power supply through the fixed resistor R2. The capacitor C1 and the fixed resistor R2 are installed in a way that is easy to replace; wherein the normally open contact of the relay serves as a start switch for starting the motor 114 and the electromagnetic friction disk 121.

[0030] The working principle of a hoisting and lifting system with a safety protection function disclosed in the present invention is as follows: the housing 101 is connected to the bottom end of the wire rope, and then the goods are hung on the hook 131. The hook 131 applies the gravity of the goods to the hoisting frame 108 through the hook connector 130, and the hoisting frame 108 applies the gravity of the goods to the detection beam frame 106. The detection beam frame 106 compresses the reset spring 109 and slides downward on the detection beam frame sliding rod 105, so that the positioning block 107 contacts the support beam plate 103, and then the detection beam frame 106 stops moving, and the extrusion plate 132 also contacts the force-sensitive resistor 113. During this process, the extrusion spring 111 is slowly squeezed, so the pressure on the force-sensitive resistor 113 changes slowly (when hoisting, the crane should be operated slowly). At this time, the resistance value of the force-sensitive resistor 113 decreases slowly, and the charging and discharging speed of the capacitor C1 is very slow, and no large instantaneous current will be generated, so the coil of the relay will not generate magnetic force, and the normally open contact will not be attracted.

[0031] At the same time, the movement of the detection beam 106 will also drive the rack 117 to move, the rack 117 drives the gear 118 to rotate, and the gear 118 drives the inner rotating block 119 to rotate. At this time, the rack 117 moves downward, and the inner rotating block 119 and the gear 118 rotate slowly, and the friction force on the friction column 128 inside the triangular groove 126 is also in the direction away from the permanent magnet 127. When the mounted heavy object falls from the hook 131, in order to prevent the goods from hitting the construction workers below, an alarm needs to be sounded. The swing angle of the crane's boom and the horizontal position of the transported goods can be known through the crane's operating data. Therefore, only at least four speakers need to be set around the crane's hoisting range. When the goods fall, the system controls the pronunciation volume of the four speakers according to the horizontal coordinates at the time of falling, so that the sound at the falling position becomes louder. When the construction workers below hear the sound, they will subconsciously run in the direction away from the sound source, thereby reducing the risk of being hit by the goods.

[0032] Specifically, when the cargo falls, the weight on the hook 131 will decrease rapidly, and then the detection beam 106 will be quickly reset under the elastic force of the reset spring 109, and the rapid movement of the detection beam 106 will drive the rack 117 to move rapidly, and the rack 117 will drive the gear 118 to rotate rapidly, and the gear 118 will drive the inner rotating block 119 to rotate rapidly, at this time, the rotation of the inner rotating block 119 will cause the friction column 128 inside the triangular groove 126 to move toward the direction of the permanent magnet 127, and then the friction column 128 is captured by the magnetic force of the permanent magnet 127 (the magnetic force between the permanent magnet 127 and the friction column 128 is slightly greater than the maximum tension of the friction column tension spring 129), and then the inclined surface in the triangular groove 126 and the outer rotating sleeve 128 will move. 0, and the friction column 128 is also exerted by the outer rotating sleeve 120 on the friction column 128 in the direction of the permanent magnet 127, so the extrusion will be further increased. At this time, the friction column 128 will be stuck between the permanent magnet 127 and the outer rotating sleeve 120, and then the outer rotating sleeve 120 will be driven to rotate by the inner rotating block 119 through the friction column 128. The rotation of the outer rotating sleeve 120 will drive the middle rotating disk 123 to rotate, and the rotation of the middle rotating disk 123 will drive the input shaft of the generator 115 to rotate. The rotation of the input shaft of the generator 115 will generate voltage, and then the alarm signal will be transmitted to the outside through the transmitter. Therefore, the alarm signal can be sent out without setting a power supply inside the shell 101.

[0033] At the same time, when the detection beam 106 is quickly reset, the extrusion plate 132 will quickly separate from the force-sensitive resistor 113. At this time, the pressure on the force-sensitive resistor 113 will be instantly reduced, causing the resistance of the force-sensitive resistor 113 to increase instantly. At this time, since the voltage of the capacitor C1 cannot change suddenly instantly, an instantaneous charging current will be generated. This current will pass through the coil of the relay, thereby causing the normally open contact of the relay to be attracted (its sensitivity adjustment: the capacitor C1 affects the trigger sensitivity, the larger the value, the longer the response time; the resistor R2 controls the discharge speed of the current, the value The larger the value, the lower the sensitivity. The resistor R2 is used to control the discharge of the current. Then the starter motor 114 and the electromagnetic friction disc 121 will be energized. The electromagnetic friction disc 121 generates magnetic force to attract the friction passive disc 122. The output shaft of the starter motor 114 drives the spline shaft 125 to rotate. The spline shaft 125 drives the electromagnetic friction disc 121 to rotate. The electromagnetic friction disc 121 drives the friction passive disc 122 to rotate. The friction passive disc 122 drives the intermediate rotating disc 123 to rotate. The intermediate rotating disc 123 drives the input shaft of the generator 115 to rotate. The rotation of the intermediate rotating disc 123 will also drive the outer rotating sleeve 120 to rotate. The rotation of the outer rotating sleeve 120 will drive the friction column 128 to rotate in a direction away from the permanent magnet 127. At this time, the inner wall of the outer rotating sleeve 120 and the inclined surface of the triangular groove 126 will no longer squeeze the friction column 128, which will cause the power to be unable to be transmitted from the intermediate rotating disc 123 to the inner rotating block 119. It should be noted that when the starter motor 114 can work normally, whether the mechanical mechanism at the inner rotating block 119 is effective or not, the input shaft of the generator 115 will rotate. However, when the starter motor 114 cannot work normally, the mechanical mechanism at the inner rotating block 119 will also drive the input shaft of the generator 115 to rotate. Since the starter motor 114 requires electrical energy to take effect, when the power system fails, the mechanical mechanism at the inner rotating block 119 can also work normally.

Claims

1. A hoisting and lifting system with safety protection function, characterized in that: The invention comprises a support beam plate (103), an auxiliary support plate (104) is fixedly mounted on the support beam plate (103), and a starter motor (114) and a generator (115) are fixedly mounted on the auxiliary support plate (104); wherein two parallel detection beam frame sliding rods (105) are also fixedly mounted on the support beam plate (103), a detection beam frame (106) is slidably mounted on the two detection beam frame sliding rods (105), a return spring (109) is disposed around each detection beam frame sliding rod (105), and two ends of the return spring (109) are fixedly matched with the detection beam frame (106) and the support beam plate (103); An extrusion slide bar bracket (110) is fixedly installed on the side of the detection beam frame (106), an extrusion slide bar (112) is slidably arranged on the extrusion slide bar bracket (110), an extrusion plate (132) is fixedly arranged at the bottom end of the extrusion slide bar (112), a force sensitive resistor (113) is arranged directly below the extrusion plate (132), the force sensitive resistor (113) is overlapped on the support beam plate (103), an extrusion spring (111) is arranged around the extrusion slide bar (112), and both ends of the extrusion spring (111) are fixed to the extrusion slide bar bracket (110) and the extrusion plate (132), wherein the extrusion plate (132) and the force sensitive resistor (113) are in contact and extrusion fit; It also includes at least four speakers arranged around the construction site for providing spatial audio information to personnel.

2. The hoisting and lifting system with safety protection function according to claim 1 is characterized in that: A hanging frame (108) is fixedly mounted on the detection beam frame (106), a hanging hook connector (130) is fixed at the bottom of the hanging frame (108), and a hanging hook (131) is fixed on the hanging hook connector (130); a positioning block (107) is fixed on a side of the detection beam frame (106) facing the supporting beam plate (103), and the positioning block (107) is in contact with the supporting beam plate (103).

3. The hoisting and lifting system with safety protection function according to claim 2 is characterized in that: A friction passive disk (122) and an intermediate rotating disk (123) are also rotatably mounted on the auxiliary bracket plate (104), and the friction passive disk (122) and the intermediate rotating disk (123) are in transmission cooperation via a transmission belt (124), wherein the intermediate rotating disk (123) is fixed on the input shaft of the generator (115), and wherein the friction passive disk (122) is in rotation cooperation with the output shaft of the starter motor (114).

4. The hoisting and lifting system with safety protection function according to claim 3 is characterized in that: A spline shaft (125) is fixed on the output shaft of the starter motor (114), and an electromagnetic friction disc (121) is sleeved on the spline shaft (125) in a spline sliding manner. The electromagnetic friction disc (121) and the friction passive disc (122) are matched by friction transmission, and the electromagnetic friction disc (121) and the friction passive disc (122) are matched by magnetic force.

5. The hoisting and lifting system with safety protection function according to claim 4 is characterized in that: A closed support frame (116) is also fixed on the auxiliary support plate (104), and the closed support frame (116) is rotatably matched with the triangular groove (126) and the electromagnetic friction disk (121) to prevent the electromagnetic friction disk (121) from sliding off the spline shaft (125); A gear (118) is also rotatably mounted on the closed support frame (116), an inner rotating block (119) is coaxially fixed on the gear (118), an outer rotating sleeve (120) is provided on the outer rotating sleeve of the inner rotating block (119), and the middle rotating disk (123) is fixedly matched with the outer rotating sleeve (120).

6. The hoisting and lifting system with safety protection function according to claim 5 is characterized in that: At least two triangular grooves (126) are formed on the inner rotating block (119); a permanent magnet (127) is fixed at the narrow end of the triangular groove (126); the permanent magnet (127) does not contact the outer rotating sleeve (120); the lateral magnetic force of the permanent magnet (127) cooperates with a friction column (128); a friction column tension spring (129) is fixed between the friction column (128) and the vertical surface of the triangular groove (126); wherein the longest side of the permanent magnet (127) is smaller than the diameter of the friction column (128), so that the friction column (128) cannot contact the permanent magnet (127) when moving toward the permanent magnet (127).

7. The hoisting and lifting system with safety protection function according to claim 6 is characterized in that: A rack (117) is fixedly mounted on the detection beam frame (106); the rack (117) is slidably matched with the closed support frame (116); and the rack (117) is meshed with the gear (118) for transmission.

8. The hoisting and lifting system with safety protection function according to claim 7 is characterized in that: The supporting beam plate (103) is fixedly mounted on the inner wall of the outer shell (101), a bottom dust cover (102) is fixedly mounted on the bottom of the outer shell (101), and the outer shell (101) is fixedly connected to the end of a steel wire rope of the crane.

9. The hoisting and lifting system with safety protection function according to claim 8, characterized in that: The force-sensitive resistor (113) is connected in series with a fixed resistor R1 in a DC circuit, and the middle position between the force-sensitive resistor (113) and the fixed resistor R1 is connected to the negative electrode of the DC power supply via the capacitor C1 and the relay coil in sequence, and the middle position between the fixed capacitor C1 and the relay coil is connected to the negative electrode of the power supply via the fixed resistor R2.

10. A hoisting and lifting system with safety protection function according to claim 9, characterized in that: The capacitor C1 and the fixed value resistor R2 are installed in a manner that is easy to replace; wherein the normally open contact of the relay serves as a starting switch for starting the motor (114) and the electromagnetic friction disk (121).

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