Crane safety door and crane

Abstract

The utility model belongs to the technical field of cranes, and provides a crane safety door and a crane. The door comprises a door plate and a door frame, a door bolt is rotatably arranged on the door plate, the width of the door bolt is gradually increased in the length direction of the door bolt, an installation groove is formed in the door frame, and the side, with the larger width, of the door bolt is inserted into the installation groove. According to the utility model, the bolt is prevented from loosening, so that the door plate cannot be automatically opened or shaken in the running process of the crane to cause disconnection of a door interlocking switch circuit and stop running of the crane, the structure is simple, and the practicability is strong.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a crane safety door and a crane. Background Art

[0002] At present, the bolt design of many lifting machinery (referred to as cranes) is relatively simple. During the operation of the lifting machinery, the bolt will loosen due to vibration due to long-term use, which will increase the gap between the door panel and the door frame, causing the door interlock switch to disconnect or even open automatically, causing the running crane to stop running, affecting the production progress, and there is also the problem that the fault is difficult to detect, and it needs to be stopped for adjustment and maintenance many times.

[0003] Therefore, a new solution is needed to solve the problem of door bolt loosening. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a crane safety door and a crane, so as to solve the problem of loose door bolts in the prior art.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a crane safety door, which is specifically configured as follows: it includes a door panel and a door frame, a door bolt is rotatably arranged on the door panel, the width of the door bolt gradually increases along its own length direction, and an installation groove is arranged on the door frame, and the side of the door bolt with a larger width is inserted into the installation groove.

[0006] Optionally, the crane safety door further comprises a connecting piece, the door bolt is provided with a connecting portion, and the connecting portion is connected to the door panel via the connecting piece.

[0007] Optionally, the connecting portion is configured as a first strip hole, and a length direction of the first strip hole is consistent with a length direction of the door bolt.

[0008] Optionally, the connecting member passes through the first strip hole and is connected to the door panel, and the door bolt can move relative to the connecting member along the length direction of the first strip hole.

[0009] Optionally, the crane safety door further comprises a fixing member connected to the door frame, and the fixing member is provided with the mounting groove.

[0010] Optionally, the cross-sections of the mounting groove and the door bolt in the width direction are both triangular structures.

[0011] Optionally, the crane safety door further comprises a trigger connected to the door panel and a switch connected to the door frame, and the trigger cooperates with the switch to determine whether the door panel is open.

[0012] Optionally, an adjusting portion is provided on the trigger member to adjust the relative position of the trigger member and the interlock switch.

[0013] Optionally, the adjusting portion is configured as a second strip-shaped hole, and a length direction of the first strip-shaped hole is consistent with a length direction of the trigger member.

[0014] The utility model also provides a crane, which comprises any one of the above-mentioned crane safety doors.

[0015] As described above, the crane safety door of the utility model has the following beneficial effects:

[0016] When the door bolt vibrates, relative movement occurs between the door bolt and the installation groove. Since the width of the door bolt gradually increases along its length direction and the side with a larger width of the door bolt is inserted into the installation groove, the door bolt and the installation groove are always in a tight state, which prevents the door bolt from loosening. The door panel will not open or shake by itself during the operation of the crane, causing the door interlock switch circuit to be disconnected, causing the crane to stop operating. The structure is simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic structural diagram of a crane safety door according to an embodiment of the utility model;

[0018] Figure 2 Shown is a schematic structural diagram of a door bolt according to an embodiment of the utility model.

[0019] Description of Reference Numerals

[0020] 1-Door panel;

[0021] 2- Door frame;

[0022] 3-bolt; 31-connecting part;

[0023] 4-Connectors;

[0024] 5-fixing member; 51-installation slot;

[0025] 6-trigger; 61-adjustment part;

[0026] 7-Interlock switch. DETAILED DESCRIPTION

[0027] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0028] It should be noted that the diagram provided in the present embodiment only illustrates the basic concept of the present invention in a schematic manner, so the diagram only shows the components related to the present invention rather than drawing according to the number, shape and size of the components during actual implementation. The form, quantity and proportion of each component during actual implementation can be changed at will, and the component layout form may also be more complicated. The structure, proportion, size, etc. illustrated in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can implement, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effect that the present invention can produce and the purpose that can be achieved. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of narration, and are not used to limit the scope of the present invention. The change or adjustment of its relative relationship should also be regarded as the scope of the present invention without substantial change of the technical content.

[0029] like Figure 1 , Figure 2 As shown, some embodiments of the present application provide a crane safety door, including a door panel 1 and a door frame 2. A bolt 3 is rotatably provided on the door panel 1, and the width of the bolt 3 gradually increases along its length direction, that is, the width of one side of the bolt 3 gradually increases relative to the width of the other side. A mounting groove 51 is provided on the door frame 2, and the side of the bolt 3 with a larger width is inserted into the mounting groove 51. When the door panel 1 rotates relative to the door frame 2, the bolt 3 rotates with the door panel 1. At this time, the width of the bolt 3 located in the mounting groove 51 is larger than the width of the bolt 3 previously located in the mounting groove 51, so that the bolt 3 is tightly pressed against the mounting groove 51, avoiding the bolt 3 from loosening, so that the door panel 1 cannot continue to rotate, which is beneficial to ensuring the life safety of the operator. And it has a simple structure and strong practicality.

[0030] Exemplarily, the cross-sections of the mounting groove 51 and the bolt 3 in the width direction are both triangular structures, which facilitates the insertion of the bolt 3 into the mounting groove 51 .

[0031] In some embodiments, a connecting portion 31 is provided on the door bolt 3 , and the connecting portion 31 is installed on the door panel 1 through the connecting member 4 , that is, the door bolt 3 is installed on the door panel 1 through the connecting member 4 .

[0032] Exemplarily, the connection portion 31 can be set as a circular hole, a first strip hole, etc. When the connection portion 31 is set as a first strip hole, the length direction of the first strip hole is consistent with the length direction of the bolt 3, which is conducive to adjusting the relative position between the bolt 3 and the door frame 2.

[0033] Specifically, the connecting member 4 passes through the first strip hole and is connected to the door panel 1, and the bolt 3 can move relative to the connecting member 4 along the length direction of the first strip hole so as to adjust the relative position between the bolt 3 and the door frame 2. At the same time, the relative position between the bolt 3 and the door frame 2 is also adjusted, thereby improving the versatility of the bolt 3.

[0034] Exemplarily, the connection member 4 can be configured as a cylindrical pin, a screw, etc.

[0035] In some embodiments, a fixing member 5 is installed on the door frame 2 , and a mounting groove 51 is provided on the fixing member 5 , which helps to reduce the difficulty of processing the door frame 2 and also improves the versatility of the door frame 2 .

[0036] In some embodiments, a trigger member 6 is further installed on the door panel 1, and an interlock switch 7 is further installed on the door frame 2. The trigger member 6 cooperates with the interlock switch 7 to determine whether the door panel 1 is opened.

[0037] Exemplarily, when the interlock switch 7 is set as a trigger switch, the contact of the trigger switch can contact the trigger member 6. When the contact contacts the trigger member 6, it means that the door panel 1 and the door frame 2 are connected through the bolt 3, and the door panel 1 and the door frame 2 are in a closed state; when the contact does not contact the trigger member 6, it means that the door panel 1 and the door frame 2 are not connected through the bolt 3, and the door panel 1 and the door frame 2 are in an open state.

[0038] In some embodiments, in order to facilitate adjustment of the distance between the trigger member 6 and the interlock switch 7 , an adjustment portion 61 is provided on the trigger member 6 .

[0039] Exemplarily, the adjustment portion 61 is configured as a second strip hole, and the length direction of the second strip hole is consistent with the length direction of the trigger member 6 , so as to adjust the trigger member 6 to the maximum extent.

[0040] In actual application of the present application, when the bolt 3 is debugged and installed, the connector 4 is passed through the first strip hole to connect the bolt 3 to the door panel 1, and the bolt 3 is rotated relative to the door panel 1 and inserted into the installation groove 51 on the door frame 2. At this time, the connector 4 does not lock the bolt 3 on the door panel 1, and the bolt 3 can move along the length direction of the first strip hole to adjust the relative position between the bolt 3 and the door frame 2, so that the bolt 3 and the installation groove 51 are pressed tightly to prevent the door panel 1 from rotating away from the door frame 2. After determining the position of the bolt 3, the connector 4 locks the bolt 3 on the door panel 1 so that the door panel 1 and the door frame 2 are in a closed state. At the same time, the distance between the trigger 6 and the interlock switch 7 is adjusted through the second adjustment hole so that the interlock switch 7 and the trigger 6 can cooperate well to identify the current state of the door panel 1 and the door frame 2.

[0041] To sum up, the utility model provides a crane safety door. When the door bolt vibrates, relative movement occurs between the door bolt and the installation groove. Since the width of the door bolt gradually increases along its length direction and the side of the door bolt with a larger width is inserted into the installation groove, the door bolt and the installation groove are always in a tight state, thereby avoiding loosening of the door bolt, so that the door panel will not open or shake by itself during the operation of the crane, causing the door interlock switch circuit to be disconnected, causing the crane to stop operating. The utility model has a simple structure and strong practicality.

[0042] The utility model also provides a crane, which comprises the above-mentioned crane safety door.

[0043] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A crane safety door, characterized in that: include: A door panel, wherein a door bolt is rotatably arranged on the door panel, and the width of the door bolt gradually increases along its length direction; The door frame is provided with a mounting groove, and the side of the door bolt with a larger width is inserted into the mounting groove.

2. The crane safety door according to claim 1, characterized in that: The crane safety door also includes a connecting piece, and a connecting portion is provided on the door bolt, and the connecting portion is connected to the door panel through the connecting piece.

3. The crane safety door according to claim 2, characterized in that: The connecting portion is configured as a first strip-shaped hole, and the length direction of the first strip-shaped hole is consistent with the length direction of the door bolt.

4. The crane safety door according to claim 3, characterized in that: The connecting member passes through the first strip hole and is connected to the door panel, and the door bolt can move relative to the connecting member along the length direction of the first strip hole.

5. The crane safety door according to claim 1, characterized in that: The crane safety door also includes a fixing member connected to the door frame, and the fixing member is provided with the mounting groove.

6. The crane safety door according to claim 1 or 5, characterized in that: The cross-sections of the installation groove and the door bolt in the width direction are both triangular structures.

7. The crane safety door according to claim 4, characterized in that: The crane safety door also includes a trigger connected to the door panel and an interlock switch connected to the door frame. The trigger cooperates with the interlock switch to determine whether the door panel is opened.

8. The crane safety door according to claim 7, characterized in that: The trigger member is provided with an adjusting portion to adjust the relative position of the trigger member and the interlock switch.

9. The crane safety door according to claim 8, characterized in that: The adjusting portion is configured as a second strip-shaped hole, and the length direction of the first strip-shaped hole is consistent with the length direction of the trigger member.

10. A crane, characterized in that: The crane comprises a crane safety door as described in any one of claims 1-9.

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