Instant freezer chain falling alarm device

Abstract

The utility model discloses an instant freezer chain falling alarm device which comprises a base plate, a supporting square pipe is welded to the base plate, a proximity switch fixing plate is welded to the top of one side of the supporting square pipe, a proximity switch is fixedly installed on the proximity switch fixing plate, and a shaft is welded to the side, away from the proximity switch fixing plate, of the supporting square pipe. The shaft is movably sleeved with a swing arm assembly. A swing arm limiting plate is welded to the inner side of the supporting square pipe and located below the swing arm assembly. One end of an HFG21-50 hinge is installed at the bottom of the proximity switch fixing plate, and the other end of the HFG21-50 hinge is connected with a turning plate. When the chain on the upper portion falls off, the balance weight assembly falls off due to gravity, the turning plate is driven by the swing arm assembly to be close to the proximity switch, and when the proximity switch senses the turning plate, running equipment can be stopped emergently, so that falling off of the chain of the instant freezer can be conveniently found in time, and the instant freezer is prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of quick-freezing machine technology, specifically to a quick-freezing machine chain detachment alarm device. Background Technology

[0002] During the operation of the quick-freezing machine, the conveyor belt carries the products from outside the quick-freezing chamber into the chamber for cooling and freezing. At the designated time, the products are discharged from the other end, and the conveyor belt moves down back to the feeding end. When the conveyor belt exits the chamber from the relatively humid and high-temperature environment outside, the drive chains on both sides will freeze. If the ice on the chains is not removed, the ice layer will become thicker and thicker, and the chains will not be able to mesh with the drive sprockets and will disengage, causing production to stop and resulting in economic losses. Utility Model Content

[0003] The purpose of this invention is to provide an alarm device for chain detachment in a quick-freezing machine, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a quick-freezing machine chain detachment alarm device, comprising a base plate, a supporting square tube welded on the base plate, a proximity switch fixing plate welded to the top of one side of the supporting square tube, a proximity switch fixedly installed on the proximity switch fixing plate, and a shaft welded to the side of the supporting square tube away from the proximity switch fixing plate, and a swing arm assembly movably sleeved on the shaft.

[0005] A swing arm limiting plate is welded to the inner side of the supporting square tube, and the swing arm limiting plate is located below the swing arm assembly.

[0006] The bottom of the proximity switch mounting plate is fitted with one end of an HFG21-50 hinge, and the other end of the HFG21-50 hinge is connected to a flap. A tension spring limiting plate is welded to the bottom of the proximity switch mounting plate, and an LH-1x10-50 tension spring connects the tension spring limiting plate and the flap.

[0007] Preferably, a square tube blocking plate is installed at the top opening of the supporting square tube.

[0008] Preferably, a shaft fixing plate is movably sleeved on the shaft, and the shaft fixing plate is connected to the swing arm assembly.

[0009] Preferably, the HFG21-50 hinge is fixed to the proximity switch mounting plate and the flip plate using an open-type flat round head blind rivet.

[0010] Preferably, a flap limiting plate is welded to one side of the proximity switch fixing plate, and the flap limiting plate is adapted to the flap.

[0011] Preferably, the base plate has a round hole, and the base plate is fixed to the channel steel using carbon steel galvanized hexagonal head bolts.

[0012] Preferably, the swing arm assembly includes a swing arm and a lead screw fixedly installed at the end of the swing arm, with the lead screw installed at the top of the swing arm and a vertical limiting plate installed at the bottom of the swing arm.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] When the upper chain comes off, the counterweight component will fall due to gravity. This will cause the flap to move closer to the proximity switch via the swing arm assembly. When the proximity switch senses the flap, it will immediately stop the running equipment, making it easier to detect when the freezer chain comes off and preventing damage to the freezer. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0017] In the diagram: 1. Proximity switch; 2. HFG21-50 hinge; 3. LH-1x10-50 tension spring; 4. Base plate; 5. Support square tube; 6. Square tube end plate; 7. Proximity switch fixing plate; 8. Shaft; 9. Shaft fixing plate; 10. Swing arm limit plate; 11. Tension spring limit plate; 12. Flip plate limit plate; 13. Swing arm assembly; 14. Flip plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-2 This utility model provides a technical solution: a quick-freezing machine chain detachment alarm device, including a base plate 4, a supporting square tube 5 welded on the base plate 4, and a proximity switch fixing plate 7 welded to the top of one side of the supporting square tube 5, a proximity switch 1 fixedly installed on the proximity switch fixing plate 7, and a shaft 8 welded to the side of the supporting square tube 5 away from the proximity switch fixing plate 7, and a swing arm assembly 13 movably sleeved on the shaft 8.

[0020] A swing arm limiting plate 10 is welded to the inner side of the supporting square tube 5, and the swing arm limiting plate 10 is located below the swing arm assembly 13.

[0021] One end of the HFG21-50 hinge 2 is installed at the bottom of the proximity switch mounting plate 7, and the other end of the HFG21-50 hinge 2 is connected to the flap 14. A tension spring limiting plate 11 is welded to the bottom of the proximity switch mounting plate 7, and an LH-1x10-50 tension spring 3 is connected between the tension spring limiting plate 11 and the flap 14.

[0022] In this utility model, a square tube blocking plate 6 is installed at the top opening of the supporting square tube 5.

[0023] In this invention, a shaft fixing plate 9 is movably sleeved on the shaft 8, and the shaft fixing plate 9 is connected to the swing arm assembly 13, so that the swing arm assembly 13 can rotate around the shaft 8 due to the lever principle.

[0024] In this utility model, the HFG21-50 hinge 2 is fixed to the proximity switch fixing plate 7 and the flip plate 14 using an open-type flat round head pop rivet.

[0025] In this utility model, a flap limiting plate 12 is welded to one side of the proximity switch fixing plate 7, and the flap limiting plate 12 is adapted to the flap 14. The flap limiting plate 12 will prevent the flap 14 from damaging the proximity switch 1.

[0026] In this utility model, a round hole is provided on the base plate 4, and the base plate 4 is fixed to the channel steel using carbon steel galvanized hexagonal head bolts.

[0027] In this utility model, the swing arm assembly 13 includes a swing arm and a lead screw fixedly installed at the end of the swing arm. The lead screw is installed at the top of the swing arm. If the upper chain falls off, the counterweight assembly will fall due to gravity and hit the lead screw on the swing arm assembly 13. Due to the lever principle, the swing arm assembly 13 rotates around the shaft 8. The swing arm assembly 13 will drive the flip plate 14 fixed on the 2HFG21-50 hinge to flip upward. A vertical limiting plate is installed at the bottom of the swing arm. The vertical limiting plate will prevent the swing arm assembly 13 from rotating more than 30°.

[0028] The working principle of this utility model is as follows: When the equipment is working, the 3LH-1x10-50 tension spring 3 fixed on the tension spring limiting plate 11 will hook the flip plate 14. The flip plate 14 presses against the swing arm assembly 13 to prevent the swing arm assembly 13 from rotating upward along the shaft 8. The swing arm limiting plate 10 will prevent the swing arm assembly 13 from rotating downward. If the upper chain falls off, the counterweight assembly will fall due to gravity and hit the lead screw on the swing arm assembly 13. Due to the lever principle, the swing arm assembly 13 rotates around the shaft 8. The swing arm assembly 13 will drive the flip plate 14 fixed on the 2HFG21-50 hinge to flip upward. The vertical limiting plate at the rear end of the swing arm assembly 13 will prevent the swing arm assembly 13 from rotating more than 30°. In this way, the flip plate 14 will stop in front of the flip plate limiting plate 12. The flip plate limiting plate 12 will prevent the flip plate 14 from damaging the proximity switch 1. When the proximity switch 1 senses the flip plate 14, it will stop the operating equipment immediately.

[0029] The contents not described in detail in this specification are prior art known to those skilled in the art. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chain detachment alarm device for a quick-freezing machine, comprising a base plate (4), characterized in that: A supporting square tube (5) is welded on the base plate (4), and a proximity switch fixing plate (7) is welded on the top of one side of the supporting square tube (5). A proximity switch (1) is fixedly installed on the proximity switch fixing plate (7). A shaft (8) is welded on the side of the supporting square tube (5) away from the proximity switch fixing plate (7), and a swing arm assembly (13) is movably sleeved on the shaft (8). The inner side of the supporting square tube (5) is welded with a swing arm limiting plate (10), and the swing arm limiting plate (10) is located below the swing arm assembly (13). The bottom of the proximity switch fixing plate (7) is equipped with one end of the HFG21-50 hinge (2), and the other end of the HFG21-50 hinge (2) is connected to a flap (14). A tension spring limiting plate (11) is welded to the bottom of the proximity switch fixing plate (7), and an LH-1x10-50 tension spring (3) is connected between the tension spring limiting plate (11) and the flap (14).

2. The quick-freezing machine chain detachment alarm device according to claim 1, characterized in that: A square tube plug plate (6) is installed at the top opening of the supporting square tube (5).

3. The quick-freezing machine chain detachment alarm device according to claim 1, characterized in that: A shaft fixing plate (9) is movably sleeved on the shaft (8), and the shaft fixing plate (9) is connected to the swing arm assembly (13).

4. The quick-freezing machine chain detachment alarm device according to claim 1, characterized in that: The HFG21-50 hinge (2) is fixed to the proximity switch fixing plate (7) and the flip plate (14) using an open-type flat round head pop rivet.

5. The quick-freezing machine chain detachment alarm device according to claim 1, characterized in that: A flap limiting plate (12) is welded to one side of the proximity switch fixing plate (7), and the flap limiting plate (12) is compatible with the flap (14).

6. The quick-freezing machine chain detachment alarm device according to claim 1, characterized in that: The base plate (4) has a round hole and is fixed to the channel steel with carbon steel galvanized hexagonal head bolts.

7. The quick-freezing machine chain detachment alarm device according to claim 1, characterized in that: The swing arm assembly (13) includes a swing arm and a lead screw fixedly installed at the end of the swing arm, with the lead screw installed at the top of the swing arm and a vertical limiting plate installed at the bottom of the swing arm.

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