A pin-type weighing sensor

Abstract

The utility model discloses a shaft pin type weighing sensor, which relates to the technical field of shaft pin type weighing sensors, and comprises a sensor body, wherein one end of the sensor body is fixedly connected with a fixing nut, the outer wall of the other end of the sensor body is provided with an external thread, the outer wall of the external thread is provided with a movable nut, the outer sides of the fixing nut and the movable nut are provided with a plurality of rubber pads, the bottom of the rubber pad is provided with a damping spring, and the middle part of the sensor body is respectively provided with a first oil-absorbing paper ring and a second oil-absorbing paper ring. The utility model is provided with a series of structures, which can reduce the probability of the weighing sensor colliding with external objects due to rolling, and reduce the probability of the sensor being damaged when not handled with care, thereby facilitating the taking and placement of the shaft pin type sensor, reducing the probability of the sensor being disturbed by the oil film, and reducing the adverse effects on the normal use of the weighing sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of axle pin type weighing sensors, in particular to axle pin type weighing sensors. Background Art

[0002] With the development of industrial sensors, the force measurement of mechanical mechanisms has gradually shifted from indirect force measurement to direct force measurement, and many direct force measurement sensors have been born. The pin-type weighing sensor is one of them. It can be regarded as a shaft that is a special weighing sensor, and is widely used in ships, cranes, electronic scales and other equipment.

[0003] However, the existing axle pin type weighing sensor is a precision machine and has an elastic element inside. Therefore, when the axle pin type weighing sensor is subjected to a large external force collision during the process of picking up and placing, the elastic element inside the sensor is easily damaged, which is not conducive to the picking up and placement of the sensor. In addition, the existing axle pin type weighing sensor needs to be assembled and connected with the hook and pulley and other parts of the lifting equipment. Since the parts on the lifting equipment need to be frequently lubricated with lubricating oil, a layer of oil film will remain on the contact surface between the parts and the sensor, and the oil film cannot be cleaned and absorbed in time, resulting in the oil film easily interfering with the weighing sensor, affecting the normal use of the weighing sensor. Utility Model Content

[0004] The purpose of the utility model is to provide a shaft pin type weighing sensor to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pin-type weighing sensor, comprising a sensor body, one end of the sensor body is fixedly connected with a fixing nut, the outer wall of the other end of the sensor body is provided with an external thread, the outer wall of the external thread is movably threaded with a movable nut, a plurality of rubber pads are provided on the outer sides of the fixing nut and the movable nut, a damping spring is provided at the bottom of the rubber pad, a first oil-absorbing paper ring and a second oil-absorbing paper ring are respectively provided in the middle of the sensor body, the top of the first oil-absorbing paper ring is movably connected with a first tear line, the middle of the second oil-absorbing paper ring is movably connected with a second tear line, and a side wall of the first oil-absorbing paper ring is fixedly connected with a connecting belt.

[0006] Preferably, the outer walls of the fixed nut and the movable nut are provided with a plurality of grooves, and the bottom end of the damping spring is fixedly connected to the bottom of the inner side of the groove.

[0007] Preferably, the top end of the damping spring is fixedly connected to the bottom end of the rubber pad, and the rubber pad is movably connected to the fixed nut and the movable nut respectively through grooves.

[0008] Preferably, one end of the connecting belt away from the first oil-absorbing paper ring is fixedly connected to the second oil-absorbing paper ring, and the connecting belt is movably connected to the sensor body through the first oil-absorbing paper ring and the second oil-absorbing paper ring.

[0009] Preferably, a screw hole is provided in the middle of the other end of the sensor body, and a screw rod is connected to the inner movable thread of the screw hole.

[0010] Preferably, one end of the screw is fixedly connected to a rotating plate, and the top end of the rotating plate is fixedly connected to a gasket.

[0011] Preferably, the gasket is movably connected to a side wall of the movable nut via a screw.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. This pin-type weighing sensor, through the fixed nut, movable nut, rubber pad, groove and rotating plate, makes it difficult for the weighing sensor to roll along the top surface of the platform when placed, thereby reducing the probability of the weighing sensor colliding with external objects due to rolling. At the same time, when the sensor is not handled with care, the force generated by the sensor and the platform can also be consumed through the deformation of the rubber pad and the shock-absorbing spring, reducing the probability of damage to the sensor when it is picked up and placed, which is conducive to the picking up and placement of the pin-type sensor.

[0014] 2. The pin-type weighing sensor, through the first oil-absorbing paper ring, the second oil-absorbing paper ring, the connecting belt, the first easy-tear line and the second easy-tear line, enables the oil film on the contact surface of the pulley and the hook components and the sensor to be absorbed by the oil-absorbing paper in time when the weighing sensor is assembled and docked with the pulley and the hook components, thereby cleaning the oil film on the contact surface of the sensor and the lifting mechanism connection component, reducing the probability of the sensor being disturbed by the oil film, and reducing the adverse effects on the normal use of the weighing sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the rubber pad and the fixing nut of the utility model;

[0017] Figure 3 This is a schematic diagram of the screw and rotating plate structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the external thread and screw hole structure of the utility model.

[0019] In the figure: 1. fixing nut; 2. rubber pad; 3. sensor body; 4. first oil-absorbing paper; 5. first tear-off line; 6. connecting belt; 7. second oil-absorbing paper; 8. second tear-off line; 9. movable nut; 10. rotating plate; 11. screw; 12. damping spring; 13. groove; 14. gasket; 15. external thread; 16. screw hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figures 1 to 4 As shown, the pin-type weighing sensor of this embodiment includes a sensor body 3, one end of the sensor body 3 is fixedly connected with a fixing nut 1, the outer wall of the other end of the sensor body 3 is provided with an external thread 15, the outer wall of the external thread 15 is movably threaded with a movable nut 9, a plurality of rubber pads 2 are provided on the outer sides of the fixing nut 1 and the movable nut 9, a damping spring 12 is provided at the bottom of the rubber pad 2, a first oil-absorbing paper ring 4 and a second oil-absorbing paper ring 7 are respectively sleeved on the middle part of the sensor body 3, a first easy-tear line 5 is movably connected to the top of the first oil-absorbing paper ring 4, a second easy-tear line 8 is movably connected to the middle part of the second oil-absorbing paper ring 7, and a connecting belt 6 is fixedly connected to one side wall of the first oil-absorbing paper ring 4.

[0024] Specifically, the sensor body 3 is an axle pin type weighing sensor, and two embedding grooves are provided on the surface for installing measuring elements, and the connecting belt 6 is just located on the two embedding grooves, so that the connecting belt 6 is easier to peel off from the surface of the sensor body 3. The fixed nut 1 and the movable nut 9 are both hexagonal nuts, so that the middle sensor body 3 can be suspended by the two nuts, so that when the sensor body 3 is not handled with care, the force generated can also be first absorbed and consumed by the rubber pad 2 on the fixed nut 1 and the movable nut 9 and the shock-absorbing spring 12, thereby reducing the damage to the sensor body 3 when it is not handled with care. After the movable nut 9 is engaged with the external thread 15, it can be fixed to the other end of the sensor body 3, thereby achieving The sensor body 3 is suspended, and the rubber pad 2 and the shock-absorbing spring 12 serve to absorb the force generated by the collision of external objects on the sensor body 3, thereby realizing shock-absorbing protection for the sensor body 3. The first oil-absorbing paper ring 4 and the second oil-absorbing paper ring 7 can absorb and clean the oil film on the contact surface between the sensor and the upper component of the lifting mechanism, thereby reducing the probability of the oil film adhering to the surface of the sensor body 3 and reducing the adverse effects of the oil film on the normal use of the sensor body 3. The first easy-tear line 5 and the second easy-tear line 8 enable the first oil-absorbing paper ring 4 and the second oil-absorbing paper ring 7 to be uncovered and torn off from the sensor body 3 after completing the oil absorption step, thereby reducing the interference caused when the axle pin type sensor is connected to the lifting equipment components.

[0025] Furthermore, the outer walls of the fixed nut 1 and the movable nut 9 are provided with a plurality of grooves 13, and the bottom end of the shock-absorbing spring 12 is fixedly connected to the bottom inside the groove 13. The function of the groove 13 is to hide the shock-absorbing spring 12 and to provide the shock-absorbing spring 12 with sufficient deformation space to consume the force exerted by the rubber pad 2 on it.

[0026] Furthermore, the top end of the shock-absorbing spring 12 is fixedly connected to the bottom end of the rubber pad 2, and the rubber pad 2 is movably connected to the fixed nut 1 and the movable nut 9 through the groove 13. The rubber pad 2 is a silicone pad 2, the surface of which is passivated and wear-resistant, thereby facilitating the contact between the rubber pad 2 and the platform plane.

[0027] Furthermore, one end of the connecting belt 6 away from the first oil-absorbing paper ring 4 is fixedly connected to the second oil-absorbing paper ring 7, and the connecting belt 6 is movably connected to the sensor body 3 through the first oil-absorbing paper ring 4 and the second oil-absorbing paper ring 7. The function of the connecting belt 6 is to connect the first oil-absorbing paper ring 4 and the second oil-absorbing paper ring 7, so that the first oil-absorbing paper ring 4 and the second oil-absorbing paper ring 7 can be better fixed on the sensor body 3.

[0028] Furthermore, a screw hole 16 is opened in the middle of the other end of the sensor body 3, and the inner movable thread of the screw hole 16 is connected with a screw rod 11. The screw rod 11 can engage with the screw hole 16, so that the screw rod 11 can fix the rotating plate 10 on one side of the movable nut 9, thereby realizing the limiting of the movable nut 9 by the rotating plate 10.

[0029] Furthermore, one end of the screw rod 11 is fixedly connected to a rotating plate 10, and the top of the rotating plate 10 is fixedly connected to a gasket 14. The cross-section of the rotating plate 10 is "L-shaped", so that after the screw rod 11 is rotated to a suitable position, the gasket 14 at the end of the rotating plate 10 can be tightly attached to the movable nut 9, thereby achieving the limitation of the movable nut 9.

[0030] Furthermore, the gasket 14 is movably connected to a side wall of the movable nut 9 via the screw rod 11 , and the gasket 14 can reduce the probability of the movable nut 9 accidentally rotating along the external thread 15 and coming out, thereby ensuring the shock-absorbing effect of the fixed nut 1 and the movable nut 9 on the sensor body 3 .

[0031] The method of using this embodiment is as follows: when using the present axle pin type weighing sensor, it is necessary to firstly screw the movable nut 9 along the external thread 15 to separate the movable nut 9 from the sensor body 3, and then the hook and pulley and other connecting parts on the lifting equipment can be inserted along one end of the weighing sensor, and then the scraping hook and the pulley are rotated so that the first oil absorbing paper ring 4 and the second oil absorbing paper ring 7 on the surface of the sensor body 3 can absorb and clean the oil film on the contact surface with the connecting part of the lifting equipment, and then the connecting part of the lifting equipment is removed, the first tear line 5 and the second tear line 8 are torn off, and then the connecting belt 6 is pulled so that the first oil absorbing paper ring 4 and the second oil absorbing paper ring 7 that have absorbed the oil are removed from the sensor body 3. The surface of the sensor body 3 is detached, and then the connecting parts of the lifting equipment are reassembled with the sensor body 3. The movable nut 9 is then covered with the external thread 15, and then the screw 11 is screwed in along the screw hole 16, so that the gasket 14 at the top of the rotating plate 10 at the end of the screw 11 fits with one side wall of the movable nut 9, so that the rotating plate 10 limits the movable nut 9. When the sensor body 3 is not handled with care, the outer walls of the movable nut 9 and the fixed nut 1 will always contact the plane of the placed platform first, so that the force exerted by the platform on the sensor body 3 is transmitted to the shock-absorbing spring 12 through the rubber pad 2, so that the force is consumed, and the force transmitted to the sensor body 3 becomes smaller.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pin-type weighing sensor, comprising a sensor body (3), characterized in that: One end of the sensor body (3) is fixedly connected to a fixing nut (1), and the outer wall of the other end of the sensor body (3) is provided with an external thread (15). The outer wall of the external thread (15) is movably threaded with a movable nut (9). A plurality of rubber pads (2) are provided on the outer sides of the fixing nut (1) and the movable nut (9). A damping spring (12) is provided at the bottom of the rubber pad (2). A first oil-absorbing paper ring (4) and a second oil-absorbing paper ring (7) are respectively sleeved in the middle of the sensor body (3). The top of the first oil-absorbing paper ring (4) is movably connected to a first tear line (5), and the middle of the second oil-absorbing paper ring (7) is movably connected to a second tear line (8). A side wall of the first oil-absorbing paper ring (4) is fixedly connected to a connecting belt (6).

2. The pin-type weighing sensor according to claim 1, characterized in that: The outer walls of the fixed nut (1) and the movable nut (9) are both provided with a plurality of grooves (13), and the bottom end of the damping spring (12) is fixedly connected to the bottom inside the groove (13).

3. The pin-type weighing sensor according to claim 2, characterized in that: The top end of the vibration-damping spring (12) is fixedly connected to the bottom end of the rubber pad (2), and the rubber pad (2) is movably connected to the fixed nut (1) and the movable nut (9) respectively through the groove (13).

4. The pin-type weighing sensor according to claim 1, characterized in that: One end of the connecting belt (6) away from the first oil-absorbing paper ring (4) is fixedly connected to the second oil-absorbing paper ring (7), and the connecting belt (6) is movably connected to the sensor body (3) through the first oil-absorbing paper ring (4) and the second oil-absorbing paper ring (7).

5. The pin-type weighing sensor according to claim 1, characterized in that: A screw hole (16) is provided in the middle of the other end of the sensor body (3), and a screw rod (11) is connected to the inner movable thread of the screw hole (16).

6. The pin-type weighing sensor according to claim 5, characterized in that: One end of the screw rod (11) is fixedly connected to a rotating plate (10), and the top end of the rotating plate (10) is fixedly connected to a gasket (14).

7. The pin-type weighing sensor according to claim 6, characterized in that: The gasket (14) is movably connected to a side wall of the movable nut (9) via a screw rod (11).

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