Anti-scattering bucket elevator

Abstract

The utility model relates to the field of bucket elevators, in particular to an anti-scattering bucket elevator, which comprises an elevator main body, an anti-scattering mechanism and an emergency stop unit, the elevator main body comprises a hopper, an elevating part and a casing part, and the anti-scattering mechanism comprises an anti-scattering plate, a mounting plate and a driving part. The scram unit comprises a compression spring and a pressure sensor, materials are received through the anti-scattering mechanism when the hopper overturns and dumps the materials, the materials are prevented from scattering into a gap between the hopper and the discharging port when the hopper overturns and dumps the materials, the anti-scattering effect can be effectively improved, and therefore the efficiency of the elevator is indirectly improved.

Description

Technical Field

[0001] The utility model belongs to the field of bucket elevators, and in particular relates to an anti-spill bucket elevator. Background Art

[0002] Bucket elevator is a continuous conveying machine that uses a series of buckets evenly fixed on an endless traction component to lift materials vertically. Bucket elevator is suitable for lifting materials from low places to high places. The conveying speed can be adjusted according to the conveying amount. When the elevator is running, the material enters the bucket from the feed port, and the bucket is lifted to the top along the conveyor belt or chain, and then turns downward after passing the top wheel. When the bucket turns over, the material is poured into the discharge port.

[0003] In the prior art, when the bucket elevator runs to the top and flips down, the material is prone to spilling without falling to the discharge port, affecting the conveying efficiency of the elevator. Most of the existing solutions are to adjust the shape and angle of the bucket to avoid material spilling as much as possible. However, this method cannot avoid material spilling, and the anti-spill effect is poor, affecting the efficiency of the elevator. Therefore, how to overcome the above-mentioned technical problems and defects has become a key issue that needs to be solved. Utility Model Content

[0004] The purpose of the invention of the utility model is to overcome the defects described in the background technology, thereby realizing an anti-spillage bucket elevator, which can receive the material when the bucket is turned over and dumping the material through the anti-spillage mechanism, and prevent the material from spilling into the gap between the bucket and the discharge port when the bucket is turned over and dumping the material, which can effectively improve the anti-spillage effect, thereby indirectly improving the efficiency of the elevator.

[0005] To achieve the above-mentioned purpose of the invention, the technical solution of the utility model is: an anti-spill bucket elevator, including an elevator body, an anti-spill mechanism and an emergency stop unit, the elevator body includes a hopper, a lifting part and a casing part, the hopper is distributed on the lifting part, the lifting part and the hopper are both arranged inside the casing part, the anti-spill mechanism is arranged at the side plate of the discharge port of the casing part of the elevator body, and the emergency stop unit is arranged on the side of the anti-spill mechanism.

[0006] Specifically, the anti-spill mechanism includes an anti-spill plate, a mounting plate and a driving part, the driving part is fixedly arranged on the outer side of the discharge port of the casing through the mounting plate, the anti-spill plate is hingedly slidably arranged inside the discharge port of the casing, the driving part drives the anti-spill plate, and the anti-spill plate cooperates with the hopper;

[0007] Specifically, the emergency stop unit includes a compression spring and a pressure sensor. The pressure sensor is arranged at the mounting plate and the discharge port of the casing. One end of the compression spring is connected to the pressure sensor, and the other end is connected to the anti-spill plate.

[0008] In the above-mentioned anti-spillage bucket elevator, the anti-spillage plate includes a hinged shaft, a material receiving plate, a pull ring connector and an arc rail. The hinged shaft is hingedly arranged at the bottom of the unloading end of the material receiving plate through a shaft hoop. The material receiving plate is arranged at the discharge port side plate of the casing through a hinged shaft. Rectangular sliding holes for installing the hinged shaft are opened on the mounting plate and the casing corresponding to the mounting position of the hinged shaft.

[0009] In addition, the hinge shaft is provided with a shaft sleeve at the end after passing through the side plate of the casing and the mounting plate in sequence, and the side plates of the casing and the mounting plate on the upper and lower sides of the rectangular sliding hole are provided with long sliding holes for installing the shaft sleeves, and the upper and lower parts of the shaft sleeves are installed at the long sliding holes by bolts.

[0010] In the above-mentioned anti-spill bucket elevator, an arc groove is opened on the side plate of the casing and the mounting plate corresponding to the receiving end of the receiving plate, an arc rail is arranged on the mounting plate corresponding to the arc groove, a guide wheel is arranged on the side at the vertex of the arc rail, and the receiving end of the receiving plate is slidably arranged in the arc groove and the arc rail through a pull ring connector.

[0011] At the same time, a short shaft is arranged on the pull ring connector, and a rectangular slide groove is opened at the side of the receiving end of the receiving plate corresponding to the short shaft on the pull ring connector. The short shaft slides and passes through the arc groove and the arc rail, and then slides to connect the rectangular slide groove on the side of the receiving plate.

[0012] In the above-mentioned anti-spill bucket elevator, the driving part includes a driving motor, a bevel gear group, a transmission gear and an eccentric wheel. The driving motor is arranged on the mounting plate through a motor seat. A bevel gear group is arranged on the rotating shaft of the driving motor. The transmission gear is coaxially arranged with the driven wheel of the bevel gear group, and the transmission gear is located between the driven wheel of the bevel gear group and the mounting plate. The transmission gear meshes with the transmission eccentric wheel through the driven gear. A pull rope is arranged on the eccentric shaft of the eccentric wheel, and the other end of the pull rope is connected to the pull ring connector of the anti-spill plate after passing around the guide wheel.

[0013] At the same time, the eccentric wheel is an eccentric wheel with transmission teeth at the edge, and the transmission teeth of the eccentric wheel are adapted to the driven gear and the transmission gear.

[0014] In the above-mentioned anti-spill bucket elevator, the pressure sensor of the emergency stop unit is arranged in the rectangular sliding hole at the installation position of the hinge shaft, and the compression spring is arranged in the rectangular sliding hole between the pressure sensor and the hinge shaft.

[0015] In the above-mentioned anti-spill bucket elevator, a spring seat is further provided on the mounting plate below the pull ring connector, and a protective spring is provided on the spring seat, and the protective spring is located directly below the pull ring connector. Compared with the prior art, the anti-spill bucket elevator of the utility model has at least the following beneficial effects: 1. In the anti-spill bucket elevator of the utility model, when the material in the hopper is dumped onto the anti-spill plate, the anti-spill plate is driven by the driving unit to slide back and forth along the arc track up and down, so that the material can be delivered to the discharge port of the casing, thereby effectively preventing the material from being spilled between the hopper and the discharge port, and having a strong anti-spill effect. At the same time, the device is relatively convenient to install, and has strong practicality and applicability.

[0016] 2. The anti-spillage bucket elevator of the utility model can output a control signal through the emergency stop unit to make the control system control the lifting part of the elevator body and the driving part of the anti-spillage mechanism to stop running when the anti-spillage plate gets stuck or is pushed by a strong external force (such as the bucket is misplaced), thereby stopping the movement of the receiving plate and the hinge shaft in time, preventing the receiving plate and the hinge shaft from being deformed under the action of a strong external force, and having a strong protective effect.

[0017] 3. The anti-spillage bucket elevator of the utility model can provide elastic buffer for the anti-spillage plate through the protective spring when the anti-spillage plate falls along the arc track, reduce the impact force, protect the anti-spillage plate and the arc track, avoid the pull ring connector and the mounting plate from being deformed by the impact, and further improve the protection effect when unexpected situations occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a rear view structural schematic diagram of the anti-spill bucket elevator of the utility model;

[0019] Figure 2 It is a front structural cross-sectional schematic diagram of the anti-spill bucket elevator of the utility model;

[0020] Figure 3 It is an enlarged structural schematic diagram of the anti-spillage mechanism of the anti-spillage bucket elevator of the utility model;

[0021] Figure 4 It is a schematic diagram of the motion trajectory of the bucket and the receiving plate of the anti-spill bucket elevator of the utility model;

[0022] Figure 5 It is an enlarged structural diagram of the emergency stop unit of the anti-spill bucket elevator of the utility model;

[0023] Figure 6 yes Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 7The utility model is a schematic diagram of the top view of the structural connection of the pull ring connector and the material receiving plate of the anti-spill bucket elevator.

[0025] In the figure:

[0026] 1- elevator body: 101- hopper, 102- lifting part, 103- casing part;

[0027] 2- Anti-spill mechanism:

[0028] 201-anti-spill plate, 211-hinged shaft, 212-material receiving plate, 213-pull ring connector, 214-arc rail, 215-shaft hoop, 216-rectangular sliding hole, 217-shaft sleeve, 218-long sliding hole, 219-short shaft, 220-rectangular sliding groove;

[0029] 202-mounting plate, 221-arc groove, 222-guide wheel;

[0030] 203-driving part, 231-driving motor, 232-bevel gear set, 233-transmission gear, 234-eccentric wheel, 235-motor seat, 236-driven gear, 237-pull rope;

[0031] 3- Emergency stop unit: 301- Compression spring, 302- Pressure sensor;

[0032] 4- Spring seat: 401- Protective spring. DETAILED DESCRIPTION

[0033] The anti-spill bucket elevator of the utility model is described in more detail below with reference to the accompanying drawings and through specific implementation methods.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0035] Example 1

[0036] This embodiment discloses an anti-spill bucket elevator. The anti-spill mechanism receives the material when the bucket turns over and dumps the material, preventing the material from spilling into the gap between the bucket and the discharge port when the bucket turns over and dumps the material, which can effectively improve the anti-spill effect and indirectly improve the efficiency of the elevator. Figure 1 , Figure 2, which mainly includes an elevator body 1, an anti-spill mechanism 2 and an emergency stop unit 3. The elevator body 1 includes a hopper 101, a lifting part 102 and a casing part 103. The hopper 101 is distributed on the lifting part 102, and the lifting part 102 and the hopper 101 are both arranged inside the casing part 103. The anti-spill mechanism 2 is arranged at the side plate of the discharge port of the casing part 103 of the elevator body 1, and the emergency stop unit 3 is arranged on the side of the anti-spill mechanism 2. The anti-spill mechanism 2 can prevent the hopper from spilling at the discharge port when dumping materials, thereby effectively improving the anti-spill effect. The emergency stop unit 3 can stop the elevator in time and effectively avoid accidents.

[0037] For details, see Figure 1 , Figure 2 , Figure 4 The anti-spill mechanism 2 includes an anti-spill plate 201, a mounting plate 202 and a driving unit 203. The driving unit 203 is fixedly arranged on the outer side of the discharge port of the housing 103 through the mounting plate 202. The anti-spill plate 201 is hingedly slidably arranged inside the discharge port of the housing 103. The driving unit 203 drives and connects the anti-spill plate 201, and the anti-spill plate 201 cooperates with the hopper 101.

[0038] The anti-spill plate 201 is arranged between the gap between the hopper 101 and the discharge port to prevent the material from spilling into the gap between the hopper 101 and the discharge port. When the driving unit 203 is running, it can drive the anti-spill plate 201 to move, so that the material poured by the hopper 101 on it is poured into the discharge port.

[0039] To enable the anti-spill plate to receive the material dumped from the hopper, see Figure 1 , Figure 2 , Figure 3 , Figure 6 The anti-spill plate 201 includes a hinge shaft 211, a material receiving plate 212, a pull ring connector 213 and an arc rail 214. The hinge shaft 211 is hingedly arranged at the bottom of the material discharge end of the material receiving plate 212 through a shaft hoop 215, and the material receiving plate 212 is arranged at the discharge port side plate of the casing 103 through the hinge shaft 211. The material receiving plate 212 is connected to the hinge shaft 211 through the shaft hoop 215, so that the angle of the material receiving plate 212 can be adjusted, so that the plate can be turned over and unloaded under the action of the driving part. The material receiving plate 212 is arranged on the discharge port side plate of the casing 103. When the hopper 101 is dumping materials, the material receiving plate 212 can block the gap between the hopper 101 and the discharge port to prevent the materials from spilling.

[0040] To adjust the position of the splice plate, see Figure 1-4The receiving end of the receiving plate 212 is provided with an arc groove 221 on the side plate of the housing 103 and the mounting plate 202, and the mounting plate 202 is provided with an arc track 214 at the position corresponding to the arc groove 221. The receiving end of the receiving plate 212 is slidably arranged in the arc groove 221 and the arc track 214 through the pull ring connector 213. The receiving end of the receiving plate 212 is limited by the arc groove 221 and the arc track 214, so that the receiving end of the receiving plate 212 can slide back and forth along the arc groove 221 and the arc track 214 under the action of the driving part 203.

[0041] In order to realize the driving of the anti-spill plate, the anti-spill plate receives the material dumped from the hopper and sends the material out of the discharge port of the casing, see Figure 1-4 The driving part 203 includes a driving motor 231, a bevel gear set 232, a transmission gear 233 and an eccentric wheel 234. The driving motor 231 is arranged on the mounting plate 202 through a motor seat 235. A bevel gear set 232 is arranged on the rotating shaft of the driving motor 231. The transmission gear 233 is coaxially arranged with the driven wheel of the bevel gear set 232, and the transmission gear 233 is located between the driven wheel of the bevel gear set 232 and the mounting plate 202. The transmission gear 233 is meshed with the transmission eccentric wheel 234 through a driven gear 236, and a pull rope 237 is arranged on the eccentric shaft of the eccentric wheel 234. A guide wheel 222 is arranged on the side of the vertex of the arc track 214, and the other end of the pull rope 237 is connected to the pull ring connector 213 of the anti-spill plate 201 after passing around the guide wheel 222.

[0042] Through the above structure, when the driving motor 231 is running, the bevel gear set 232 is driven to run synchronously. The movement of the bevel gear set 232 drives the transmission gear 233 to rotate, and the transmission gear 233 rotates and transmits the eccentric wheel 234 through the driven gear 236. The eccentric wheel 234 rotates and pulls the pull rope 237 through the eccentric shaft. The other end of the pull rope 237 passes around the guide wheel 222 and then connects to the pull ring connector 213 of the anti-spill plate 201, so that the anti-spill plate 201 moves up and down around the arc track 214, thereby achieving the technical effect of driving the anti-spill plate.

[0043] In order to achieve the eccentric wheel through the driven gear, see Figure 3 The eccentric wheel 234 is an eccentric wheel 234 having transmission teeth at the edge, and the transmission teeth of the eccentric wheel 234 are adapted to the driven gear 236 and the transmission gear 233 .

[0044] To prevent the anti-spill plate from getting stuck when moving up and down or from being damaged by a strong external force (such as a misaligned hopper), refer to Figure 3 , Figure 5A rectangular sliding hole 216 for installing the hinge shaft 211 is opened on the mounting plate 202 and the housing portion 103 corresponding to the mounting location of the hinge shaft 211, and an emergency stop unit 3 is also installed inside the rectangular sliding hole 216.

[0045] The end of the hinge shaft 211 after passing through the rectangular sliding hole 216 of the side plate of the housing 103 and the mounting plate 202 in sequence is provided with a sleeve 217. Long sliding holes 218 for installing the sleeve 217 are provided on the side plate of the housing 103 and the mounting plate 202 on the upper and lower sides of the rectangular sliding hole 216, and the upper and lower parts of the sleeve 217 are installed at the long sliding hole 218 by bolts. The sleeve 217 is installed through the long sliding hole 218, so that the sleeve 217 can drive the hinge shaft 211 and the receiving plate 212 to move along the long sliding hole 218 when pushed by a strong external force, thereby preventing the receiving plate 212 and the hinge shaft 211 from being deformed under the action of a strong external force.

[0046] See also Figure 3 , Figure 5 , Figure 6 , an emergency stop unit 3 is also provided at the hinge shaft 211. The pressure sensor 302 of the emergency stop unit 3 is provided in the rectangular slide hole 216 at the installation location of the hinge shaft 211, and the compression spring 301 is provided in the rectangular slide hole 216 between the pressure sensor 302 and the hinge shaft 211. By providing the pressure sensor 302 and the compression spring 301, when the hinge shaft 211 slides along the long slide hole 218 under the action of external force, the compression spring 301 applies pressure to the pressure sensor 302, and the pressure sensor 302 outputs a signal, so that the control system controls the lifting part 102 of the lifting machine body 1 and the driving part 203 of the anti-spill mechanism 2 to stop running, thereby stopping the movement of the receiving plate 212 and the hinge shaft 211 in time, and preventing the receiving plate 212 and the hinge shaft 211 from being deformed under the action of a strong external force.

[0047] To ensure that the receiving plate can apply pressure to the compression spring and pressure sensor when a strong external force is applied (such as when the hopper is misaligned), refer to Figure 7 , a short shaft 219 is arranged on the pull ring connector 213, and a rectangular slot 220 is opened at the short shaft 219 on the pull ring connector 213 corresponding to the side of the material receiving end of the material receiving plate 212. The short shaft 219 slides and passes through the arc slot 221 and the arc rail 214, and then slides to connect the rectangular slot 220 on the side of the material receiving plate 212. In this embodiment, a bearing is arranged on the short shaft 219 at the connection between the short shaft 219 and the rectangular slot 220, and the bearing can reduce the friction between the short shaft 219 and the rectangular slot 220, so as to realize the sliding connection of the short shaft 219 in the rectangular slot 220. In this way, the material receiving plate 212 can be stably and flexibly rotated.

[0048] Through the above structure, when the receiving plate 212 is pushed by external force, it can be displaced under the action of the rectangular slide groove 220 and the short shaft 219 structure arranged on its side, thereby applying pressure to the compression spring 301 and the pressure sensor 302.

[0049] Example 2

[0050] The same as the first embodiment is not repeated here, the difference is that: in order to prevent the pull rope from accidentally breaking when the drive unit is running, see Figure 3 A spring seat 4 is also provided on the mounting plate 202 below the pull ring connector 213, and a protective spring 401 is provided on the spring seat 4. The protective spring 401 is located directly below the pull ring connector 213. By providing the spring seat 4 and the protective spring 401, when the pull rope 237 is accidentally broken, the protective spring 401 can provide elastic buffering for the anti-spill plate 201 when the anti-spill plate 201 falls along the arc track 214, thereby reducing the impact force, protecting the anti-spill plate 201 and the arc track 214, and preventing the pull ring connector 213 and the mounting plate 202 from being deformed by the impact.

[0051] The working principle of the anti-spill bucket elevator of the utility model:

[0052] When the device is working, when the hopper is lifted to the top by the lifting part, the angle of the hopper tilts, and the material in the hopper is dumped onto the anti-spill plate. The driving motor of the driving part drives the bevel gear set to operate, and the operation of the bevel gear set drives the transmission gear, the driven gear and the eccentric wheel to rotate in turn. The rotation of the eccentric wheel drives the anti-spill plate to move along the arc track. The movement of the anti-spill plate simultaneously dumps the material dumped by the hopper onto it into the discharge port of the casing, thereby preventing the material from spilling between the hopper and the discharge port.

[0053] When the anti-spill plate gets stuck or is pushed by a strong external force (such as a misaligned hopper) when moving up and down, the articulated shaft and the receiving plate are displaced along the long sliding hole. The displacement of the articulated shaft simultaneously applies pressure to the compression spring, and the compression spring applies pressure to the pressure sensor. The pressure sensor outputs a signal to cause the control system to control the lifting part of the elevator body and the driving part of the anti-spill mechanism to stop running, thereby stopping the movement of the receiving plate and the articulated shaft in time to prevent the receiving plate and the articulated shaft from being deformed under the action of a strong external force.

[0054] When the pull rope breaks accidentally during the operation of the driving unit, the protective spring can provide elastic buffer for the anti-spill plate when the anti-spill plate falls along the curved rail, reduce the impact force, protect the anti-spill plate and the curved rail, and prevent the pull ring connector and the mounting plate from being deformed due to impact.

[0055] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The use of "one" or "an" and other similar words in the specification and claims of this application does not necessarily indicate a quantitative limitation. "Include" or "comprises" and other similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0056] The exemplary implementation of the present invention is described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and various combinations of the various technical features and structures proposed in the present invention can be made without exceeding the protection scope of the present invention.

Claims

1. An anti-spill bucket elevator, comprising an elevator body, the elevator body comprising a hopper, a lifting part and a casing part, the hopper is distributed on the lifting part, the lifting part and the hopper are both arranged inside the casing part, characterized in that: It also includes an anti-spill mechanism and an emergency stop unit, wherein the anti-spill mechanism is arranged at the side plate of the discharge port of the casing of the elevator body, and the emergency stop unit is arranged on the side of the anti-spill mechanism; The anti-spill mechanism includes an anti-spill plate, a mounting plate and a driving part, wherein the driving part is fixedly arranged on the outer side of the discharge port of the casing through the mounting plate, the anti-spill plate is hingedly slidably arranged inside the discharge port of the casing, the driving part drives the anti-spill plate, and the anti-spill plate cooperates with the hopper; The emergency stop unit includes a compression spring and a pressure sensor. The pressure sensor is arranged at the mounting plate and the discharge port of the casing. One end of the compression spring is connected to the pressure sensor, and the other end is connected to the anti-spill plate.

2. The anti-spill bucket elevator according to claim 1, characterized in that: The anti-spill plate includes a hinge shaft, a material receiving plate, a pull ring connector and an arc rail. The hinge shaft is hingedly arranged at the bottom of the material discharge end of the material receiving plate through a shaft hoop. The material receiving plate is arranged at the material discharge port side plate of the casing through a hinge shaft. A rectangular sliding hole for the hinge shaft to be installed is opened on the mounting plate and the casing corresponding to the hinge shaft installation position; In addition, the hinge shaft is provided with a shaft sleeve at the end after passing through the side plate of the casing and the mounting plate in sequence, and the side plates of the casing and the mounting plate on the upper and lower sides of the rectangular sliding hole are provided with long sliding holes for installing the shaft sleeves, and the upper and lower parts of the shaft sleeves are installed at the long sliding holes by bolts.

3. The anti-spill bucket elevator according to claim 2, characterized in that: The receiving end of the receiving plate is provided with an arc groove on the side plate of the casing and the mounting plate, the mounting plate is provided with an arc rail at the arc groove, the side of the arc rail vertex is provided with a guide wheel, and the receiving end of the receiving plate is slidably provided in the arc groove and the arc rail through a pull ring connector; A short shaft is arranged on the pull ring connector, and a rectangular slide groove is opened at the side of the receiving end of the receiving plate corresponding to the short shaft on the pull ring connector. The short shaft slides and passes through the arc groove and the arc rail, and then slides to connect the rectangular slide groove on the side of the receiving plate.

4. The anti-spill bucket elevator according to claim 1, characterized in that: The driving part includes a driving motor, a bevel gear set, a transmission gear and an eccentric wheel. The driving motor is arranged on the mounting plate through a motor seat. The bevel gear set is arranged on the rotating shaft of the driving motor. The transmission gear is coaxially arranged with the driven wheel of the bevel gear set, and the transmission gear is located between the driven wheel of the bevel gear set and the mounting plate. The transmission gear meshes with the transmission eccentric wheel through the driven gear. A pull rope is arranged on the eccentric shaft of the eccentric wheel. The other end of the pull rope is connected to the pull ring connector of the anti-spill plate after passing around the guide wheel. At the same time, the eccentric wheel is an eccentric wheel with transmission teeth at the edge, and the transmission teeth of the eccentric wheel are adapted to the driven gear and the transmission gear.

5. The anti-spill bucket elevator according to claim 2, characterized in that: The pressure sensor of the emergency stop unit is arranged in a rectangular sliding hole at the installation position of the hinge shaft, and the compression spring is arranged in the rectangular sliding hole between the pressure sensor and the hinge shaft.

6. The anti-spill bucket elevator according to any one of claims 2 to 5, characterized in that: A spring seat is also arranged on the mounting plate below the pull ring connector, and a protective spring is arranged on the spring seat. The protective spring is located directly below the pull ring connector.

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