CN215364507U - Lifting hook device for hydraulic weighing - Google Patents

Abstract

The invention aims to provide a lifting hook device for hydraulic weighing, which aims to improve the weighing accuracy and the bearing capacity of the lifting hook and is convenient to maintain. The lifting hook device for hydraulic weighing comprises a lifting hook and a connecting seat, and is characterized in that the lifting hook device comprises a hydraulic cylinder with a piston mounted at the top end, the connecting seat is fixedly connected with a cylinder body of the hydraulic cylinder, and the lifting hook is fixedly connected with the piston; the lifting hook device further comprises a hydraulic pressure sensor for detecting the internal pressure of the hydraulic cylinder, and a data processor which is in communication connection with the hydraulic pressure sensor and converts pressure information of the hydraulic pressure sensor into lifting hook lifting weight information. Compared with the weighing principle of the traditional tension sensor, the lifting hook device indirectly weighs the weight of the lifted heavy object by detecting the hydraulic pressure, has the advantages of large bearing range, convenience in maintenance and high reliability, cannot be influenced by the shaking of the lifting hook during weighing, and is more accurate in weighing.

Description

Lifting hook device for hydraulic weighing

Technical Field

The invention belongs to the technical field of hoisting, lifting and the like, and particularly relates to a lifting hook device with a weighing function.

Background

In the existing hoisting type weighing lifting hook device, the principle is realized through a tension sensor, namely, the lifting hook is connected with a connecting seat through the tension sensor, and the volume of the tension sensor is generally larger, so that the lifting hook device is large and heavy. Furthermore, the tension sensor is deformed during use, and requires frequent calibration data, which is inherent material characteristics of the product itself, cannot be changed, and is difficult to maintain. The lifting hook can not shake in the working process, and the change of the stress direction of the tension sensor can seriously affect the weighing accuracy. In addition, the load bearing range of the tension sensor is limited, and the tension sensor is difficult to adapt to occasions with large lifting capacity.

Disclosure of Invention

The invention aims to provide a lifting hook device for hydraulic weighing, which aims to improve the weighing accuracy and the bearing capacity of the lifting hook and is convenient to maintain.

The lifting hook device for hydraulic weighing comprises a lifting hook and a connecting seat, and is characterized in that the lifting hook device comprises a hydraulic cylinder with a piston mounted at the top end, the connecting seat is fixedly connected with a cylinder body of the hydraulic cylinder, and the lifting hook is fixedly connected with the piston; the lifting hook device further comprises a hydraulic pressure sensor for detecting the internal pressure of the hydraulic cylinder, and a data processor which is in communication connection with the hydraulic pressure sensor and converts pressure information of the hydraulic pressure sensor into lifting hook lifting weight information.

When the weight is lifted, the weight lifted by the lifting hook applies downward acting force with the same magnitude as the gravity of the weight to the piston through the lifting hook, so that the piston tends to move downwards, the hydraulic pressure in the hydraulic cylinder is increased, the hydraulic pressure and the gravity of the weight are in a direct proportion relation, and therefore, the hydraulic pressure in the hydraulic cylinder is detected by the hydraulic pressure sensor, and the weight of the weight can be obtained through certain conversion. Of course, in order to accurately weigh, the influence of the self weight of the lifting hook must be removed, and specifically, the hydraulic pressure sensor may be cleared before weighing, or the self weight of the lifting hook may be subtracted during conversion, which is not described herein again.

Further, the data processor is in communication connection with one or more displays, and is used for displaying the lifting weight information of the lifting hook on the displays so as to be observed by an operator. The communication connection is preferably a wireless communication connection, so that the interference influence of the wire on the lifting can be avoided. Of course, the data processor may also be connected to other processors, and the lifting weight information of the lifting hook is used in combination control of other devices, for example, the data processor is connected to a computer for calculating the lifting weight, so that the total lifting weight in a period of time can be directly calculated, and related applications are numerous, and are not described herein again.

The specific structure of the lifting hook device can be as follows:

1. the bottom of the cylinder body of the hydraulic cylinder is provided with a through hole, the top end of the lifting hook upwards penetrates through the through hole and is fixedly connected with the piston, and the lifting hook and the through hole are movably sealed. The top of above-mentioned lifting hook can with piston threaded connection, perhaps the top of lifting hook and the integrative die-casting of piston form, the top of lifting hook passes through threaded connection with the lifting hook body again to guarantee the reliability that piston and lifting hook are connected, thereby improve hook assembly's bearing capacity, this kind of structure has the advantage of small and exquisite structure.

2. The connecting seat comprises connecting plates fixedly connected to two opposite sides of the hydraulic cylinder body, the upper part of each connecting plate is higher than the top end of the cylinder body, and a vertical through groove is formed in the upper part of each connecting plate; the top of lifting hook is equipped with two symmetrical connecting rods, the top of two connecting rods is equipped with the level and passes perpendicular logical groove back bending rod of buckling downwards, the bottom and the piston top surface fixed connection of buckling the rod. In the structure, the lifting hook can transmit the gravity of the lifted heavy object to the piston through the connecting rod and the bending rod without arranging a through hole on the cylinder body, so that the integrity and the reliability of the cylinder body can be ensured, and the possibility of liquid leakage is reduced; moreover, when the lifted heavy object exceeds the bearing range of the hydraulic cylinder, the horizontal part of the bending rod can only be pressed downwards at the bottom end of the vertical through groove, and the hydraulic cylinder is not damaged due to continuous pressing, so that the lifting device is safer.

Further, the bottom end of the vertical through groove is provided with an overload pressure sensor, and the overload pressure sensor is connected with an alarm device. The overload pressure sensor is used for detecting whether the horizontal part of the bending rod is in contact with the bottom end of the vertical through groove or not, when the horizontal part of the bending rod is in contact with the bottom end of the vertical through groove, the situation that a lifted heavy object exceeds the bearing capacity of the hydraulic cylinder or liquid leakage and the like of the hydraulic cylinder is shown, the overload pressure sensor is triggered at the moment, and sends information to the alarm device to give an alarm, so that an operator can find the situation in time and process the situation. The alarm device may be one or more of an indicator light and a buzzer, and is not described herein again.

Further, the piston is provided with a sensor mounting hole, the hydraulic pressure sensor is mounted at the sensor mounting hole, and the data processor is fixed on the top surface of the piston, so that a cylinder body or a connecting plate of the hydraulic cylinder can form a barrier, the possibility of contact between the hydraulic pressure sensor and the data processor and other components is reduced, and the hydraulic pressure sensor and the data processor are protected.

Compared with the weighing principle of the traditional tension sensor, the lifting hook device indirectly weighs the weight of the lifted heavy object by detecting the hydraulic pressure, has the advantages of large bearing range, convenience in maintenance and high reliability, cannot be influenced by the shaking of the lifting hook during weighing, and is more accurate in weighing.

Drawings

Fig. 1 is a partial sectional view of a hook device of example 1.

Fig. 2 is a schematic structural view of a hook device according to embodiment 2.

The figures are numbered: 1. a hook; 2. a connecting seat; 21. a connecting plate; 3. a piston; 4. a cylinder body; 5. a lock screw; 6. a hydraulic pressure sensor; 7. a data processor; 8. a through groove; 9. a connecting rod; 10. a bending rod; 11. an overload pressure sensor.

Detailed Description

The following describes embodiments of the present invention, such as shapes and structures of respective members, mutual positions and connection relationships between respective portions, and actions and operation principles of the respective portions, in further detail, with reference to the accompanying drawings.

Example 1:

the embodiment provides a lifting hook device for hydraulic weighing, so that the weighing accuracy and the bearing capacity of a lifting hook are improved, and the lifting hook device is convenient to maintain.

As shown in fig. 1, the lifting hook device that the hydraulic pressure of this embodiment was weighed includes lifting hook 1 and connecting seat 2, and the key lies in, and piston 3's pneumatic cylinder is installed including the top to this lifting hook 1 device, 4 top fixed connection of the bottom of connecting seat 2 and the cylinder body of pneumatic cylinder, 4 bottoms of the cylinder body of pneumatic cylinder are equipped with the through-hole, the through-hole is upwards passed on the top of lifting hook 1 to pass through screw-thread fit's mode fixed connection with piston 3, be swing joint between lifting hook 1 and the through-hole, be equipped with jam screw 5 between lifting hook 1's top and the piston 3. And sealing rings are arranged between the lifting hook 1 and the through hole, between the top end of the lifting hook 1 and the bottom surface of the piston 3 and between the side surface of the piston 3 and the side wall of the cylinder body 4, so that the sealing performance is ensured.

This lifting hook 1 device is still including the hydraulic pressure sensor 6 that is used for detecting pneumatic cylinder internal pressure to and be connected with hydraulic pressure sensor 6 communication, convert hydraulic pressure sensor 6's pressure information into the data processor 7 of 1 handling weight information of lifting hook, data processor 7 is connected with a plurality of displays (not drawing the display in the picture) wireless communication, in order to be used for showing 1 handling weight information of lifting hook on the display, make things convenient for the operator to observe in different positions. In this embodiment, the piston 3 is provided with a sensor mounting hole, the hydraulic pressure sensor 6 is mounted at the sensor mounting hole, and the data processor 7 is fixed on the top surface of the piston 3, so that the cylinder body 4 of the hydraulic cylinder forms a barrier, reducing the possibility that the hydraulic pressure sensor 6 and the data processor 7 contact other components, and protecting the pressure sensor and the data processor 7.

When in lifting, the weight lifted by the lifting hook 1 applies downward acting force with the same magnitude as the weight of the weight to the piston 3 through the lifting hook 1, so that the piston 3 tends to move downwards, the hydraulic pressure in the hydraulic cylinder is increased, and the hydraulic pressure and the weight of the weight are in a direct proportion relation, therefore, the hydraulic pressure in the hydraulic cylinder is detected by the hydraulic pressure sensor 6, and the weight of the weight can be obtained through certain conversion. Of course, in order to accurately weigh, the influence of the self weight of the hook 1 must be removed, and specifically, the hydraulic pressure sensor 6 may be cleared before weighing, or the self weight of the hook 1 may be subtracted during data processing, which is not described herein again.

Example 2:

as shown in fig. 2, different from embodiment 1, in this embodiment, the connecting base 2 includes a connecting plate 21 fixedly connected to two opposite sides of the cylinder body 4 of the hydraulic cylinder, the upper portion of the connecting plate 21 is higher than the top end of the cylinder body 4, and the upper portion of the connecting plate 21 is provided with a vertical through groove 8; the top end of the lifting hook 1 is provided with two symmetrical connecting rods 9, the top ends of the two connecting rods 9 are provided with bending rods 10 which horizontally penetrate through the vertical through grooves 8 and then are bent downwards, and the bottom ends of the bending rods 10 are fixedly connected with the top surface of the piston 3; the bottom end of the vertical through groove 8 is provided with an overload pressure sensor 11, and the overload pressure sensor 11 is connected with an alarm device (the alarm device is not shown in the figure, and a sound and light alarm device can be specifically adopted). The pressure sensor and the data processor 7 of this embodiment are mounted in the same manner as in embodiment 1, and are not described herein again.

During the process of lifting the heavy object, the lifting hook 1 transmits the gravity of the lifted heavy object to the piston 3 through the connecting rod 9 and the bent rod 10, so that the piston 3 tends to move downwards. Compared with the embodiment 1, the embodiment does not need to arrange a through hole on the cylinder body 4, is favorable for ensuring the integrity and the reliability of the cylinder body 4, and reduces the possibility of liquid leakage.

The overload pressure sensor 11 is used for detecting whether the horizontal part of the bending rod 10 is in contact with the bottom end of the vertical through groove 8 or not, when the horizontal part of the bending rod 10 is in contact with the bottom end of the vertical through groove 8, the situation that the lifted heavy object exceeds the bearing capacity of the hydraulic cylinder or liquid leakage and the like of the hydraulic cylinder is shown, the overload pressure sensor 11 is triggered at the moment, and the overload pressure sensor 11 sends information to the alarm device to give an alarm so that an operator can find the situation in time and process the situation. Moreover, when the lifted heavy object exceeds the bearing range of the hydraulic cylinder, the horizontal part of the bending rod 10 is pressed downwards at the bottom end of the vertical through groove 8, and the hydraulic cylinder is not damaged by continuous pressing, so that the lifting device is safer.

The invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of the components set forth in the following description, as long as the invention is capable of being practiced without modification in any way whatsoever, and is capable of other applications without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (7)

1. A lifting hook device for hydraulic weighing comprises a lifting hook and a connecting seat, and is characterized in that the lifting hook device comprises a hydraulic cylinder, the top end of the hydraulic cylinder is provided with a piston, the connecting seat is fixedly connected with a cylinder body of the hydraulic cylinder, and the lifting hook is fixedly connected with the piston; the lifting hook device further comprises a hydraulic pressure sensor for detecting the internal pressure of the hydraulic cylinder, and a data processor which is in communication connection with the hydraulic pressure sensor and converts pressure information of the hydraulic pressure sensor into lifting hook lifting weight information.

2. The hydraulically weighted lifting hook assembly of claim 1, wherein the data processor is communicatively coupled to one or more displays for displaying hook handling weight information on the display.

3. The lifting hook device for hydraulic weighing according to claim 1 or 2, wherein the bottom of the cylinder body of the hydraulic cylinder is provided with a through hole, the top end of the lifting hook penetrates upwards through the through hole and is fixedly connected with the piston, and the lifting hook and the through hole are movably sealed.

4. The hydraulic weighing hook assembly of claim 3, wherein the piston is provided with a sensor mounting hole, the hydraulic pressure sensor is mounted at the sensor mounting hole, and the data processor is fixed to the top surface of the piston.

5. A lifting hook device for hydraulic weighing according to claim 1 or 2, characterized in that the connecting base comprises connecting plates fixedly connected to opposite sides of the cylinder body of the hydraulic cylinder, the upper part of the connecting plates is higher than the top end of the cylinder body, and the upper part of the connecting plates is provided with a vertical through groove; the top of lifting hook is equipped with two symmetrical connecting rods, the top of two connecting rods is equipped with the level and passes perpendicular logical groove back bending rod of buckling downwards, the bottom and the piston top surface fixed connection of buckling the rod.

6. A hook assembly for hydraulic weighing according to claim 5, characterized in that the bottom end of the vertical through slot is provided with an overload pressure sensor, and the overload pressure sensor is connected with an alarm device.

7. The hydraulic weighing hook assembly of claim 5, wherein the piston is provided with a sensor mounting hole, the hydraulic pressure sensor is mounted at the sensor mounting hole, and the data processor is fixed to the top surface of the piston.

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