CN207991717U - Device for measuring force - Google Patents

Abstract

The utility model provides a kind of device for measuring force, the device for measuring force is fixed to pedestal, it includes Weighing module, pallet and the first connecting rod for connecting pallet and Weighing module, the device for measuring force further includes seal casinghousing, the Weighing module is placed in seal casinghousing, the pallet is placed in the outside of seal casinghousing, the seal casinghousing includes first part and the second part that is connected with first part, the second part is made of soft material, the first connecting rod from second part across and first connecting rod and second part for be tightly connected.The device for measuring force high certainty of measurement of the utility model, can be to avoid the influence of external environment weighing.

Description

force measuring device

technical field

The utility model relates to a force measuring device, in particular to a force measuring device with a sealed casing.

Background technique

In the prior art, the force-measuring device is directly used in the environment. Without the protection of a sealed housing, the force measuring device is easily affected by dust or wind.

Utility model content

The purpose of the utility model is to provide a force measuring device with high measurement accuracy.

According to one aspect of the present utility model, a force measuring device is provided, the force measuring device is fixed to the base, and it includes a weighing module, a tray and a first connecting rod connecting the tray and the weighing module, the force measuring The device also includes a sealed housing, the weighing module is placed in the sealed housing, the tray is placed outside the sealed housing, the sealed housing includes a first part and a second part connected to the first part, the first part The two parts are made of soft material, the first connecting rod passes through the second part, and the first connecting rod and the second part are connected in a sealed manner.

Preferably, the sealed housing further includes a third part connected to the first part, the third part is made of soft material, and the force measuring device further includes a third part connecting the third part with the weighing module. Two connecting rods, the second connecting rod passes through the third part, and the second connecting rod and the third part are in a sealed connection, and the second connecting rod is located below the weighing module.

Preferably, the second part and the third part have the same structure and are arranged in the same direction.

Preferably, the friction force between the first link and the second part is the same as the friction force between the second link and the third part.

Preferably, the weighing module includes a first parallel guide piece, a second parallel guide piece parallel to the first parallel guide piece, a tail end connecting the first parallel guide piece and the second parallel guide piece and connecting the second parallel guide piece A front end where a parallel guide piece and a second parallel guide piece are connected, and the force measuring device further includes a force measuring strain gauge with one end fixed to the front end and the other end fixed to the base.

Preferably, the force measuring device further includes a first extension extending inward from the front end and connected to the end of the force measuring strain gauge.

Preferably, the force measuring device further includes a support part connected to the other end of the force measuring strain gauge and fixed to the base.

Preferably, the first extension part is arranged in a horizontal direction, and the support part is in a vertical direction.

Preferably, the base is provided with a hole located directly below the second connecting rod and facing the second connecting rod.

The force-measuring device provided by the utility model can prevent dust from contacting the weighing module and affecting the measurement accuracy of the force-measuring device.

Description of drawings

Fig. 1 is a schematic diagram of a force measuring device of the present invention.

Detailed ways

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 shows a force measuring device which is fixed to a base 6 . The force measuring device includes a weighing module 5 , a pallet 1 and a first connecting rod 31 connecting the pallet 1 and the weighing module 5 . The force measuring device also includes a sealed housing 2 , and the weighing module 5 is placed in the sealed housing 2 . By placing the force-measuring device in the sealed casing 2, the impact of external dust, wind, etc. on the force-measuring device is avoided.

The tray 1 is placed outside the sealed casing 2 , and the sealed casing 2 includes a first part 21 and a second part 22 connected to the first part 21 . The second part 22 is made of soft material, preferably rubber material. The first connecting rod 31 passes through the second part 22 and is in a sealed connection between the first connecting rod 31 and the second part 22 , which makes it difficult for external dust to enter the inner space of the sealed housing 2 .

The sealed housing 2 also includes a third part 23 connected to the first part 2 . The third part 23 is made of soft material, preferably rubber material. The force measuring device also includes a second connecting rod 32 connecting the third part 23 and the weighing module 5 . The second connecting rod 32 passes through the third part 23 and is in a sealed connection between the second connecting rod 32 and the third part 23 , and the second connecting rod 32 is located below the weighing module. Preferably, the first connecting rod 31 , the second connecting rod 32 and the front end 54 are located on the same straight line.

The second part 22 and the third part 23 have the same structure and are arranged in the same direction. Through this setting, when the tray 1 moves down, the second part 22 and the third part 23 can undergo the same deformation, so that the overall space inside the sealed casing 2 does not change.

The friction force between the first link 31 and the second part 22 is the same as the friction force between the second link 32 and the third part 23 . Through this setting, when the tray 1 moves downward, the second part 22 and the third part 23 can undergo the same deformation.

The weighing module comprises a first parallel guide piece 51, a second parallel guide piece 52 parallel to the first parallel guide piece 51, a tail end 53 connecting the first parallel guide piece 51 and the second parallel guide piece 52 And the front end 54 that connects the first parallel guide piece 51 and the second parallel guide piece 52. A plurality of first grooves 511 are formed on the first parallel guide piece 51 , and a plurality of second grooves 521 are formed on the second parallel guide piece 52 . Through this arrangement, the first parallel guide piece 51 and the second parallel guide piece 52 can move downward in parallel. The force measuring device also includes a force measuring strain gauge 56 with one end fixed to the front end 54 and the other end fixed to the base 6 . By arranging the force-measuring strain gauges 56 in this way, the number of force-measuring strain gauges 56 can be saved, and at the same time, assembly is facilitated.

The force measuring device further includes a first extension 55 extending inward from the front end 54 and connected to the end of the force measuring strain gauge 56 .

The force measuring device further includes a support portion 57 connected to the other end of the force measuring strain gauge 56 and fixed to the base 6 .

The first extending portion 55 is arranged in a horizontal direction, and the supporting portion 57 is located in a vertical direction.

The base 6 is provided with a hole 61 located directly below the second connecting rod 23 and facing the second connecting rod 23 .

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present utility model cover the modifications and variations of the present utility model within the scope of the appended claims and their equivalent technical solutions.

Claims (9)

1. A force-measuring device, said force-measuring device is fixed to a base (6), which comprises a weighing module (5), a pallet (1) and a first module connecting the pallet (1) and the weighing module (5). A connecting rod (31), characterized in that the force measuring device also includes a sealed housing (2), the weighing module (5) is placed in the sealed housing (2), and the tray (1) is placed On the outside of the sealed housing (2), the sealed housing (2) includes a first part (21) and a second part (22) connected to the first part (21), the second part (22) is soft The first connecting rod (31) passes through the second part (22), and the first connecting rod (31) and the second part (22) are in a sealed connection. 2. The force measuring device according to claim 1, characterized in that, the sealed housing (2) further comprises a third part (23) connected to the first part (2), and the third part (23) Made of soft material, the force measuring device also includes a second connecting rod (32) connecting the third part (23) and the weighing module (5), the second connecting rod (32) is connected from the first The three parts (23) pass through and the second connecting rod (32) and the third part (23) are sealed and connected, and the second connecting rod (32) is located below the weighing module. 3. The force measuring device according to claim 2, characterized in that, the second part (22) and the third part (23) have the same structure and are arranged in the same direction. 4. The force measuring device according to claim 2, characterized in that the friction force between the first connecting rod (31) and the second part (22) and the second connecting rod (32) and the third part The friction between (23) is the same. 5. force measuring device as claimed in claim 1, is characterized in that, described weighing module comprises first parallel guide piece (51), the second parallel guide piece (51) parallel with first parallel guide piece (51) 52), the tail end (53) that connects the first parallel guide piece (51) and the second parallel guide piece (52) and connects the first parallel guide piece (51) and the second parallel guide piece (52) The front end (54) of the force measuring device also includes a force measuring strain gauge (56) with one end fixed to the front end (54) and the other end fixed to the base (6). 6. The force measuring device according to claim 5, characterized in that, the force measuring device further comprises a first extension extending inwardly from the front end (54) and connected to the end of the force measuring strain gauge (56) (55). 7. The force measuring device according to claim 6, characterized in that, the force measuring device further comprises a support portion (57) connected to the other end of the force measuring strain gauge (56) and fixed to the base (6) . 8. The force measuring device according to claim 7, characterized in that, the first extension part (55) is arranged in a horizontal direction, and the support part (57) is located in a vertical direction. 9. The force measuring device according to claim 2, characterized in that, the base (6) is provided with a hole (61) located directly below the second connecting rod (23) and facing the second connecting rod (23) .