CN210855155U

CN210855155U - Pressure sensor mounting structure of weighing forklift

Info

Publication number: CN210855155U
Application number: CN201921691130.9U
Authority: CN
Inventors: 刘元伟; 连国庆; 於建东; 赵子恺; 刘纪岸; 张永
Original assignee: Zhejiang Lipu Logistics Technology Co ltd
Current assignee: Zhejiang Lipu Logistics Technology Co ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-06-26
Anticipated expiration: 2029-10-10

Abstract

The utility model discloses a fork truck's weighing pressure sensor mounting structure, its technical scheme main points are hung link joint and fork truck chain and set up the pressure sensor who is used for detecting fork truck chain and acts on fork truck hangs link joint effort on fork truck hangs the link joint including fork truck, pressure sensor is including the pressure measuring face, pressure sensor keeps away from the body lateral wall butt of pressure measuring face one end and hangs the below of link joint at fork truck to pressure sensor's pressure measuring face sets up downwards, fork truck chain length direction's one end is provided with can support the pressure part on the pressure measuring face, and the fork truck chain can act on pressure sensor with the effort through supporting the pressure part on the pressure measuring face. The pressure sensor mounting mode can effectively improve the accuracy of data detection of the pressure sensor and is beneficial to prolonging the service life of the pressure sensor.

Description

Pressure sensor mounting structure of weighing forklift

Technical Field

The utility model relates to a mechanical equipment technical field, more specifically say, it relates to a fork truck's pressure sensor mounting structure weighs.

Background

With the development of mechanization, industry accounts for a considerable share in the total value of national economy, a forklift is used as a main tool for transporting goods in a factory, the forklift is a various wheel type transporting vehicle for loading and unloading finished pallet goods, stacking and short-distance transportation and heavy object transporting operation, is widely applied to various national economy departments such as stations, ports, airports, factories, warehouses and the like, is a high-efficiency tool for mechanized loading and unloading, stacking and short-distance transportation, and at present, the forklift is only applied to a transporting process alone and does not have a weighing function, and a certain part of goods need to be transported to a weighing position by the forklift to be weighed by a weighbridge, and then the goods are transported to a destination after the quality is read, so that the workload of workers is increased, and the working efficiency is reduced.

At present, Chinese patent with publication number CN204151028U discloses a high-precision and safe weighing forklift, which comprises a lifting chain for connecting an outer gantry and a fork frame, wherein a pressure sensor with a through hole is arranged at the joint of the lifting chain and the outer gantry, and the tail end of the lifting chain sequentially penetrates through the outer gantry and the through hole of the pressure sensor and then is fixed below the pressure sensor through a connecting piece. Although the weighing forklift is provided with the pressure sensor to realize the weighing function, the existing pressure sensor comprises a sensor body, a pressure sensitive element and a signal processing unit, wherein the middle part of the sensor body is concavely provided with a cavity, the pressure sensitive element and the signal processing unit are arranged in the cavity, when the pressure sensor is installed, a pressure measuring surface at the opening end of the sensor body is required to be abutted against a bearing structure of the weighing forklift, and the acting force of the forklift chain on the pressure sensor is vertically upward, so the open end of the sensor body is required to be arranged upward and abutted with the bearing structure, but the open end of the sensor body is only abutted against the bearing structure of the weighing forklift, which is not beneficial to realizing effective sealing, and the operation environment of fork even park the position and mostly be open-air place, lead to rainwater, impurity easily to get into the cavity from the clearance between sensor body and the bearing structure, seriously influence pressure sensor and detect the precision and the life of data.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a fork truck's pressure sensor mounting structure weighs, this pressure sensor mounting means can effectively improve the precision that pressure sensor detected data to be favorable to prolonging pressure sensor's life.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a fork truck's pressure sensor mounting structure weighs, hangs link joint and fork truck chain and sets up the pressure sensor who is used for detecting fork truck chain and acts on fork truck hangs link joint effort on fork truck, pressure sensor is including the pressure measurement face, pressure sensor keeps away from the body lateral wall butt of pressure measurement face one end and hangs the below of link joint at fork truck to pressure sensor's pressure measurement face sets up downwards, fork truck chain length direction's one end is provided with can support the pressure part that supports on the pressure measurement face, and the fork truck chain can act on pressure sensor with the effort through supporting the pressure part on the pressure measurement face.

The utility model discloses further set up to: support the splenium including chain connecting rod and the fixed backing plate that sets up on the chain connecting rod, fork truck hangs and is provided with the structure of dodging that is used for dodging the chain connecting rod on the link joint, pressure sensor is provided with the perforation that is used for supplying the chain connecting rod to run through, the external diameter of chain connecting rod is less than fenestrate internal diameter, backing plate fixed connection passes fenestrate one end at the chain connecting rod, the backing plate can support the pressure face of supporting on the pressure measuring face completely.

The utility model discloses further set up to: the chain connecting rod comprises a threaded section used for being connected with the base plate, a threaded hole used for being in threaded connection with the threaded section is formed in the base plate, and a locking nut used for locking and fixing the base plate on the chain connecting rod is in threaded connection with the threaded section.

The utility model discloses further set up to: and a dismounting structure capable of realizing the detachable fixed connection between the backing plate and the pressure sensor is arranged between the backing plate and the pressure sensor.

The utility model discloses further set up to: the dismounting structure comprises a connecting through hole arranged on the base plate, a connecting screw hole arranged on the pressure sensor, and a connecting bolt which is arranged in the connecting through hole and can be connected with the connecting screw hole in a threaded manner.

The utility model discloses further set up to: be provided with between pressure sensor and the fork truck chain link plate and be used for spacing the limit structure on the fork truck chain link plate with pressure sensor, fork truck chain can keep pressing the position with the support of fork truck chain link plate through limit structure in operation process.

The utility model discloses further set up to: the limiting structure comprises a convex spherical surface and a concave conical surface which can be matched with each other, the convex spherical surface and the concave conical surface are respectively arranged on the pressure sensor and the forklift hanging chain plate, or the concave conical surface and the convex spherical surface are respectively arranged on the pressure sensor and the forklift hanging chain plate, and the abutting part of the convex spherical surface and the concave conical surface is arranged in an annular line contact structure when the pressure sensor is pressed on the forklift hanging chain plate.

The utility model discloses further set up to: the pressure sensor is equipped with the sphere step that supplies protruding sphere to set up towards the protruding one side of fork truck hanging link joint of being equipped with, the concave conical surface is concavely located fork truck hanging link joint towards pressure sensor one side, the height dimension of sphere step is greater than the depth dimension of concave conical surface.

The utility model discloses further set up to: the centre gripping is provided with the spherical gasket between pressure sensor and the fork truck chaining plate, the spherical gasket is provided with the butt plane that can with fork truck chaining plate lateral wall butt towards fork truck chaining plate one side, protruding sphere sets up in spherical gasket towards pressure sensor one side, concave circular conical surface is concave to be located pressure sensor towards spherical gasket one side, the thickness dimension of spherical gasket is greater than the depth dimension of concave circular conical surface.

The utility model discloses further set up to: the clamp is provided with spherical gasket and the circular cone gasket that can the butt each other between pressure sensor and the fork truck link joint, protruding sphere sets up in spherical gasket towards circular cone gasket one side, the circular cone gasket is located towards spherical gasket one side to concave circular cone surface, the opposite side of spherical gasket and circular cone gasket all is provided with the butt plane.

To sum up, the utility model discloses following beneficial effect has: the forklift hanging chain plate is used as a bearing structure of the weighing forklift, the pressure sensor can be arranged on the forklift hanging chain plate, and the pressing part at one end of the forklift chain in the operation process acts on the pressure sensor, so that the goods can be carried and weighed simultaneously. The pressure measuring surface at the opening end of the sensor body is arranged downwards, so that the cavity opening at the middle part of the pressure sensor is arranged downwards in a concave mode, rainwater and impurities can be effectively prevented from entering the cavity without sealing the opening end of the cavity of the pressure sensor, the operation environment of the pressure sensitive element and the signal processing unit in the cavity is favorably maintained, the precision of data detection of the pressure sensor is effectively improved, and the service life of the pressure sensor is favorably prolonged.

Drawings

FIG. 1 is a schematic structural diagram of a pressure sensor mounting manner of a weighing forklift;

FIG. 2 is a schematic structural view of an embodiment of a spacing structure;

fig. 3 is a schematic structural view of another embodiment of the limiting structure.

Reference numerals: 1. hanging chain plates by a forklift; 11. an avoidance structure; 2. a forklift chain; 21. a pressing member; 211. a chain connecting rod; 2111. a threaded segment; 2112. locking the nut; 212. a base plate; 2121. pressing the surface; 2122. a threaded hole; 2123. a connecting through hole; 3. a pressure sensor; 31. pressure measuring surface; 32. perforating; 33. a spherical step; 34. A connecting screw hole; 35. a connecting bolt; 4. a limiting structure; 41. a convex spherical surface; 42. a concave conical surface; 43. a spherical spacer; 44. a conical gasket; 45. abutting against the plane.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1-3, a pressure sensor mounting structure of weighing forklift, including forklift link joint 1 and forklift chain 2, and set up and be used for detecting pressure sensor 3 of forklift chain 2 effect on forklift link joint 1, pressure sensor 3 is including pressure measuring face 31, the body lateral wall butt that pressure sensor 3 kept away from pressure measuring face 31 one end is in the below of forklift link joint 1, and pressure measuring face 31 of pressure sensor 3 sets up downwards, the one end of forklift chain 2 length direction is provided with can support the pressure part 21 that presses on pressure measuring face 31, forklift chain 2 can act on pressure sensor 3 with the effect through supporting pressure part 21 on pressure measuring face 31.

Wherein pressure sensor 3 is known technology, adopts common design, and fork truck hangs link joint 1 and as the load-bearing structure of fork truck of weighing, can supply pressure sensor 3 to settle on fork truck hangs link joint 1, and the part 21 that supports of fork truck chain 2 in operation in-process one end acts on pressure sensor 3 to can accomplish the transport and the weighing of goods simultaneously. The pressure measuring surface 31 at the opening end of the pressure sensor 3 is arranged downwards, so that the opening of the concave cavity in the middle of the pressure sensor 3 faces downwards, rainwater and impurities can be effectively prevented from entering the cavity without sealing the opening end of the cavity of the pressure sensor 3, the operation environment of a pressure sensitive element and a signal processing unit in the cavity is favorably maintained, the precision of data detection of the pressure sensor 3 is effectively improved, and the service life of the pressure sensor 3 is favorably prolonged.

Support and press part 21 including chain connecting rod 211 and the fixed backing plate 212 that sets up on chain connecting rod 211, be provided with on the fork truck hangs link joint 1 and be used for dodging structure 11 of dodging chain connecting rod 211, pressure sensor 3 is provided with and is used for supplying the perforation 32 that chain connecting rod 211 runs through, the external diameter size of chain connecting rod 211 is less than the internal diameter size of perforation 32, backing plate 212 fixed connection passes the one end of perforation 32 at chain connecting rod 211, backing plate 212 is including can supporting completely pressing the face 2121 that supports on the pressure measuring face 31. Dodge structure 11 and can set to the internal diameter size and be greater than dodging the hole or dodging the breach of dodging of the external diameter size of department that chain connecting rod 211 corresponds to for chain connecting rod 211 can pass fork truck and hang link joint 1, and dodge the internal diameter size of hole or dodging the breach and be greater than the external diameter size of corresponding chain connecting rod 211 department, avoid chain connecting rod 211 and fork truck to hang the 1 friction of link joint and influence the precision that pressure sensor 3 detected data. Similarly, the inner diameter of the through hole 32 of the pressure sensor 3 is larger than the outer diameter of the chain connecting rod 211, so that the friction between the inner wall of the through hole 32 and the chain connecting rod 211 can be avoided to influence the data detection precision of the pressure sensor 3. The setting of backing plate 212 can let pressure-measuring face 31 fully contact with face 2121 of pressing, thereby can be through increasing the area of contact of pressure sensor 3 with backing plate 212, make fork truck chain 2 apply the effort on pressing part 21 can be steady, effectual transmission is to pressure sensor 3 on, consequently, the operation in-process carries out fully pressing to pressure sensor 3 through backing plate 212, can be favorable to improving the precision that pressure sensor 3 detected data, and pressure sensor 3 can remain fully to butt with backing plate 212 all the time, still be favorable to prolonging pressure sensor 3's life.

The chain connecting rod 211 comprises a threaded section 2111 for connecting with the backing plate 212, the backing plate 212 is provided with a threaded hole 2122 for screwing with the threaded section 2111, and the threaded section 2111 is screwed with a locking nut 2112 for locking and fixing the backing plate 212 on the chain connecting rod 211. Backing plate 212 and chain connecting rod 211 components of a whole that can function independently set up, conveniently realize backing plate 212 and pressure sensor 3's butt to through addding lock nut 2112, be favorable to improving the firm in connection degree of chain connecting rod 211 and backing plate 212.

A dismounting structure which can realize the dismounting and fixing connection between the backing plate 212 and the pressure sensor 3 is arranged between the backing plate and the pressure sensor. Can realize backing plate 212 and pressure sensor 3's dismantled fixed connection, through with spacing fixed and then be favorable to improving pressure sensor 3 in the operation in-process with the operation stationary degree of backing plate 212 between the two to be favorable to further improving the precision that pressure sensor 3 detected data.

The attaching and detaching structure includes a connecting through hole 2123 provided in the backing plate 212, a connecting screw hole 34 provided in the pressure sensor 3, and a connecting bolt 35 provided in the connecting through hole 2123 and capable of being screwed to the connecting screw hole 34. The connecting bolt 35 penetrates through the connecting through hole 2123 and then is in threaded connection with the connecting screw hole 34, so that the backing plate 212 and the pressure sensor 3 can be conveniently and fixedly connected in a detachable mode, the structure is simple and easy to implement, and the installation stability is high. Wherein the connecting through-hole 2123 may be formed in a stepped hole structure for allowing the nut portion of the connecting bolt 35 to be inserted therein and prevented from being exposed.

Be provided with between pressure sensor 3 and the fork truck link joint 1 and be used for spacing limit structure 4 on the link joint 1 is hung to the fork truck with pressure sensor 3, fork truck chain 2 can keep pressing the position with the support of fork truck link joint 1 through limit structure 4 in operation in-process pressure sensor 3. Limiting structure 4's setting makes pressure sensor 3 can remain throughout in 2 operation processes of fork truck chain with fork truck hang the butt of link joint 1 and support the pressure position, effectively avoids pressure sensor 3 to produce the interference factor that influences pressure sensor 3 detection data precision on fork truck hangs link joint 1, if pressure sensor 3 produces the displacement, or perforate 32 inside wall and chain connecting rod 211 friction to the precision that pressure sensor 3 detected the data has effectively been improved.

The limiting structure 4 comprises a convex spherical surface 41 and a concave conical surface 42 which can be matched with each other, the convex spherical surface 41 and the concave conical surface 42 are respectively arranged on the pressure sensor 3 and the forklift hanging chain plate 1, or the concave conical surface 42 and the convex spherical surface 41 are respectively arranged on the pressure sensor 3 and the forklift hanging chain plate 1, and the abutting part of the convex spherical surface 41 and the concave conical surface 42 is arranged in an annular line contact structure when the pressure sensor 3 abuts against the forklift hanging chain plate 1. Limiting structure 4 that convex spherical surface 41 and concave conical surface 42 set up can play restriction pressure sensor 3 and hang link joint 1 upper circumferential direction and remove on the fork truck to play limiting displacement, effectively avoid pressure sensor 3 to hang link joint 1 upper circumferential direction and remove on the fork truck, and then be favorable to improving the firm degree that pressure sensor 3 settled on fork truck hangs link joint 1, and be favorable to improving the precision that pressure sensor 3 detected data. In addition, the contact area of the circular line of the convex spherical surface 41 and the concave conical surface 42 is small, when the acting force exerted on the pressure sensor 3 by the forklift chain 2 deviates or swings or even rotates, the pressure sensor 3 can flexibly rotate under the action of the limiting structure 4, and the abutting surface 2121 and the pressure measuring surface 31 are always kept to be effectively and fully abutted, so that the pressure sensor 3 can stably transmit the acting force to the forklift chain hanging plate 1, the structural design is ingenious, and the accuracy of detecting data by the pressure sensor 3 is improved.

Referring to fig. 2, the limiting structure 4 can be represented as: the pressure sensor 3 is convexly provided with a spherical step 33 for the convex spherical surface 41 to be arranged on one side facing the forklift chain hanging plate 1, the concave conical surface 42 is concavely arranged on one side facing the pressure sensor 3 of the forklift chain hanging plate 1, and the height dimension of the spherical step 33 is larger than the depth dimension of the concave conical surface 42. The protruding setting of spherical step 33 is convenient for supply protruding sphere 41 to set up to directly set up concave conical surface 42 and be convenient for realize limit structure 4's processing on fork truck hangs link joint 1, and effective cooperation between the two, this design can effectively avoid pressure sensor 3 to produce horizontal migration on fork truck hangs link joint 1, also can keep pressure sensor 3 all the time simultaneously and can steadily press down on fork truck hangs link joint 1, is favorable to improving the precision that pressure sensor 3 detected data.

Referring to fig. 1, the limiting structure 4 can be represented as: the spherical gasket 43 is clamped between the pressure sensor 3 and the forklift chain hanging plate 1, the abutting plane 45 which can abut against the outer side wall of the forklift chain hanging plate 1 is arranged on one side, facing the forklift chain hanging plate 1, of the spherical gasket 43, the convex spherical surface 41 is arranged on one side, facing the pressure sensor 3, of the spherical gasket 43, the concave conical surface 42 is arranged on one side, facing the spherical gasket 43, of the pressure sensor 3, and the thickness dimension of the spherical gasket 43 is larger than the depth dimension of the concave conical surface 42. The spherical gasket 43 effectively enhances the adaptability of the limiting structure 4, and extra processing operation on the forklift hanging chain plate 1 can be omitted, so that field processing of the forklift when the weighing mechanism is assembled is avoided, and the implementation cost of the limiting structure 4 is reduced.

Referring to fig. 3, the limiting structure 4 can be represented as: the pressure sensor 3 and the forklift hanging chain plate 1 are clamped by a spherical gasket 43 and a conical gasket 44 which can be mutually abutted, the convex spherical surface 41 is arranged on one side of the spherical gasket 43 facing the conical gasket 44, the concave conical surface 42 is arranged on one side of the conical gasket 44 facing the spherical gasket 43 in a concave mode, and the abutting planes 45 are arranged on the other sides of the spherical gasket 43 and the conical gasket 44. The spherical gasket 43 and the conical gasket 44 are arranged to greatly enhance the adaptability of the limiting structure 4, and extra processing operation on the forklift hanging chain plate 1 and the pressure sensor 3 can be omitted, so that field processing of the forklift when the weighing mechanism is assembled is avoided, and the implementation cost of the limiting structure 4 is reduced.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a pressure sensor mounting structure of fork truck weighs, hangs link joint (1) and fork truck chain (2) including fork truck and sets up pressure sensor (3) that are used for detecting fork truck chain (2) and act on fork truck hangs link joint (1) effort on fork truck (1), pressure sensor (3) are including pressure measuring face (31), characterized by: the body lateral wall butt that pressure sensor (3) kept away from pressure measuring face (31) one end is in the below of fork truck link joint (1) to pressure measuring face (31) of pressure sensor (3) set up downwards, fork truck chain (2) length direction's one end is provided with can support and press parts (21) on pressure measuring face (31), and fork truck chain (2) can be through supporting pressing parts (21) on pressure measuring face (31) with the working force effect on pressure sensor (3).

2. The pressure sensor mounting structure of a weighing forklift truck according to claim 1, wherein: support pressing means (21) including chain connecting rod (211) and fixed backing plate (212) of setting on chain connecting rod (211), fork truck hangs and is provided with dodge structure (11) that are used for dodging chain connecting rod (211) on link joint (1), pressure sensor (3) are provided with perforation (32) that are used for supplying chain connecting rod (211) to run through, the external diameter of chain connecting rod (211) is less than the internal diameter size of perforation (32), backing plate (212) fixed connection passes the one end of perforation (32) in chain connecting rod (211), backing plate (212) are including supporting pressing face (2121) of supporting on pressure measuring face (31) completely.

3. The pressure sensor mounting structure of a weighing forklift as set forth in claim 2, wherein: the chain connecting rod (211) comprises a threaded section (2111) connected with a backing plate (212), a threaded hole (2122) used for being in threaded connection with the threaded section (2111) is formed in the backing plate (212), and a locking nut (2112) used for locking and fixing the backing plate (212) on the chain connecting rod (211) is in threaded connection with the threaded section (2111).

4. The pressure sensor mounting structure of a weighing forklift as set forth in claim 2, wherein: a dismounting structure capable of realizing the dismounting and the fixed connection between the backing plate (212) and the pressure sensor (3) is arranged between the backing plate and the pressure sensor.

5. The pressure sensor mounting structure of a weighing forklift truck according to claim 4, wherein: the dismounting structure comprises a connecting through hole (2123) arranged on the base plate (212), a connecting screw hole (34) arranged on the pressure sensor (3), and a connecting bolt (35) which is arranged in the connecting through hole (2123) and can be in threaded connection with the connecting screw hole (34).

6. The pressure sensor mounting structure of a weighing forklift truck according to claim 1, wherein: be provided with between pressure sensor (3) and the fork truck string link joint (1) and be used for spacing limit structure (4) on fork truck string link joint (1) with pressure sensor (3), fork truck chain (2) can keep hanging link joint (1) with the fork truck support the pressure position through limit structure (4) in operation in-process pressure sensor (3).

7. The pressure sensor mounting structure of a weighing forklift truck according to claim 6, wherein: limiting structure (4) are including convex spherical surface (41) and the concave conical surface (42) that can the adaptation of each other, convex spherical surface (41) and concave conical surface (42) set up respectively on pressure sensor (3) and fork truck hang link joint (1), or concave conical surface (42) and convex spherical surface (41) set up respectively on pressure sensor (3) and fork truck hang link joint (1), and the annular line contact structure setting of butt department of convex spherical surface (41) and concave conical surface (42) when pressure sensor (3) support and press on fork truck hang link joint (1).

8. The pressure sensor mounting structure of a weighing forklift truck according to claim 7, wherein: pressure sensor (3) hang protruding spherical step (33) that is equipped with confession convex sphere (41) and sets up towards one side of link joint (1) of fork truck, concave conical surface (42) are concavely located fork truck and are hung link joint (1) and towards pressure sensor (3) one side, the depth dimension of spherical step (33) is greater than concave conical surface (42).

9. The pressure sensor mounting structure of a weighing forklift truck according to claim 7, wherein: the centre gripping is provided with spherical gasket (43) between pressure sensor (3) and the fork truck hanging link joint (1), spherical gasket (43) hang link joint (1) one side towards the fork truck and be provided with butt plane (45) that can hang link joint (1) lateral wall butt with the fork truck, convex spherical surface (41) set up in spherical gasket (43) towards pressure sensor (3) one side, concave circular conical surface (42) are concavely located pressure sensor (3) towards spherical gasket (43) one side, the thickness dimension of spherical gasket (43) is greater than the depth dimension of concave circular conical surface (42).

10. The pressure sensor mounting structure of a weighing forklift truck according to claim 7, wherein: the pressure sensor (3) and the fork truck hang link joint (1) between the centre gripping be provided with spherical gasket (43) and the circular cone gasket (44) that can butt each other, protruding sphere (41) set up in spherical gasket (43) towards circular cone gasket (44) one side, concave circular conical surface (42) are concavely located circular cone gasket (44) towards spherical gasket (43) one side, the opposite side of spherical gasket (43) and circular cone gasket (44) all is provided with butt plane (45).